DC To AC Power Inverter Problems 80% Is This Easy Fix

80% of the time. These little switches are what goes bad on the board. Its really cheap and easy just to replace them all. Its worth trying. There is nothing to lose. These parts are very cheap. It makes no sense to me to just throw them out. Take a little time and spend it trying to fix it. Thank You for watching. SUBSCRIBE If you would. Its always up to you of course.
PS Always know when ever any fixing is done hurts can come. Be your own care full person at what ever it is you do for your self in life. Your the only one that has that control.

[@MrThewhip333]

Thanks! Retail store I work at throws them out when returned so I have 2 already in the last couple weeks. Hopefully I can get them working!

[@hicoteo]

My inverter stopped working after a lightning strike. I saw this video, learned how to test mosfits, bought some on ebay and get her working again. Thanks.

[@MrDoingEverything]

Welcome

[@coilsmoke2286]

If you are going to remove those transistors you might as well test them for shorts and forward / reverse conductivity. It's simple. I think you can detect shorts and open junctions while in the board. There is no sense in replacing good semiconductors and no sense in buying dozens of parts you don't need. It is unlikely many of the transistors failed at the same time. Protection circuits shut the thing down fast. I'm fairly certain you have enough parts in the small inverter to fix the larger one. If That Is Your Problem.One needs to know what failed to proceed logically. Those inverters suffer from cracked solder joints too.

[@68pishta68]

the output stage of the 1750 inverter is the lower right set of 8 MOSFETs as your showing them. Mine had 2 that were damaged (component tester showed the bad MOSFET as 2 resistors in series) Not all are MOSFETs as the 8 next to those on the left are only 2 leg components. I tested them with a cheap $8 LCD 328 atmega component tester bought on ebay. Thing is awesome for $8. Desoldered all 8 and put them in the tester, all were the same MOSFET ID except the 2 that showed 2 resistors as the MOSFET was damaged. Delsoldering a triple leg is a bear, use a heat gun and heat them up and pull them out when they are ready. Same with installing them, use a heat gun.

[@pjackson239]

You should replace them all even if one or two are bad. Try to buy them all from the same batch.

[@MrDoingEverything]

Your right tha is the best way.

[@RawTalentSkills]

Thanks much for the video I have 1750w inverter same brand, turn on but no output

[@Laserboy-hg5uc]

A few days ago, my Power Bright 2300 short circuited when I plugged in a grinder and turned it on. I also had a small fan running fine on the other outlet. There was a "pop" in the outlet and started smoking. When I looked inside the inverter I could see burn marks on those "switches". I think I paid under $200 for it a few years ago. It would be an interesting project just to see if replacing those burned switches will get it working again but this might be a good time to upgrade.

[@MrDoingEverything]

New one's are pretty cheap these days now. I would agree upgrade it.

[@joelgobeh7343]

You’re the man!!!!! That’s exactly what I found out…. Thumbs up to you

[@seymourpro6097]

The first components to look for and test look just like automotive fuses -they are- if the inverter has been connected to the battery the wrong way round then the fuses will blow, parts would cost sub $10.

[@jw840]

they are called MOSFET you can get 10 for $3 on ebay. Check them with a multimeter first. Its easy but lookup how to test them since they are little hardware power switches. Also check if the fan is out first because that would cause the mosfets to fry 90% of the time

[@MrDoingEverything]

Good tips. : )

[@FlyerTuck]

Man, you told me exactly what I wanted to know!

[@waynewayne3709]

Yep, just replace parts and see if it works... Not the best advice from someone who does not know what a fet transistor is.. And calls them switches..

[@stevelamperta865]

isn't it nice when that happens...

[@suataydemir9144]

Hello, 3000 watt full sinus inverter fault light is on. When the inverter is turned on, a relay tripping sound is heard, then the fault light is on, what do you think could be the problem?

[@miroslawbujak171]

I would add, however, that quite often, together with the MOSFETs that you call switches, the small resistances being near of them, also burn...

[@MrDoingEverything]

Nice adding TKS Your right.

[@bobsoft]

I repair our Samlex inverters all the time when the guys at work overload them. They plug too many power tools into them, taking out the fuses, FETs and sometimes some resistors. Diode mode on a multimeter will tell you which ones are bad

[@stealthsloth]

R V even when they’re still in the board? How do you test them?

[@HolahkuTaigiTWFormosanDiplomat]

After overloading with protection, mine can be turned on but there is no AC output, only the voltage of DC been display...parts get hot during the process, still trying to fix it.

[@joemorocco]

Read the manual for my Cobra CPI 1000 unit and it states in manual that there are no serviceable components inside the unit therefore do not open the unit in the event of failure. I guess they want you to send it in since there are 4-35W fuses easily reachable by just removing the bottom plate. My unit was working the last time I used it and upon taking out of storage the unit would not power up. I must have hooked the unit up with reverse polarity at some point and did not realize it because all four fuses were blown. Replaced fuses and all is well!

[@paultheriot8703]

unfortunately in this world, advice that would prevent you from replacing the unit is legally, unsafe and unprofitable.

[@white2eagle]

Thank you for sharing this, I have a 3,500 watt inverter and I wanted to replace a couple of MOSFETs . The part number of my inverter is FB38N20D P038D and I found one on Amazon with part number FB38N20D P826D, could I use these or are they a different number all together?

[@saturn7_dev]

I would invest a bit of time working out how to test them first and diagnose the fault just in case something else has gone wrong. Someone mentioned using the diode tester to check them - try that and make sure you get a small voltage drop of like 0.3-0.4 one way and nothing the other way around (I think) and then there is another test but you just need to research that.. I think if you power the thing up and be very careful you can then measure the voltage across different legs of each transistor and compare all them together - you should be able to diagnose any issues that way I think...you dont need it inside the box at all for it to work.

[@jaredj631]

Don't de-solder them cut them at the base of the "switch" then solder the new ones to the stubs it is safer for the board. I just did it on my 750watt for the fuses.

[@MrDoingEverything]

Jared Jeanotte Hey thanks a lot. That's a really good idea. So much easyer for sure.

[@danielsimpkins9662]

+Jared Jeanotte That's quite possibly the dumbest thing I've ever heard anybody say. You ALWAYS de-solder/remove the old fets, then install new ones. shorts, bad solder joints, etc, are always possible when you don't properly resolder. Not to mention, those fets are always connected to a heatsink, normally with a screw. You need to get the exact right measurement of height to get these to stay cool.

[@jaredj631]

+Daniel Simpkins nope. That's great in theory but sometimes you need to get the job done. There is plenty of room in these inverters. Didn't see any uploads on your Chanel. Have you ever had one of these apart?

[@MrDoingEverything]

Sure have Jared. This one in the video is back working fine. I did what I said I was going to do. Cost was not very much compares to a new one. Take care

[@danielsimpkins9662]

+Jared Jeanotte Yes I have. As for my KZbin, I don't use it to upload. So you won't see videos of me doing soldering, or anything else really. But yes, I've been in the soldering side of the tech world for about 10 years. Started off learning how to fix blown caps and resistors on old CRT style tv's, then went to computers, and have been fixing just about anything that comes into my shop. I get tv's, power inverters, lots of computers with blown caps, xbox 360 slims with bad fets, etc. And the first thing I can tell you about most fets, is that they get hot, and they get hot fast. Those power inverters normally either have the entire shell as a big heatsink, or they'll have a long bar style heatsink inside. I get lots of tv's that have bar style heatsinks ( big ol chunk basically of aluminum ). You really gotta do a proper resolder job on those, not just for the heat, but if you don't do a proper job, you'll end up with cold solder joints, dry solder joints, not enough wetting, not enough solder, etc. In the world of professional repair, there is no way but the right way. If I, as a consumer, were to take a piece of equipment into a shop to have it fixed, and got it back not properly fixed, I'd be furious. You might say " well this guy is just doing this for home repair ", and that might work for some home repair guys, but what if people are looking at these comments, and think they can apply for the professional world? How irresponsible is that? Come on dude, think before you type.

[@hichamtassi1753]

Hello, nice Video ! Maybe you can help me ont the following : My victron Phoenix Inverter 12v 750va just doesn't want to start, no led, no noise... I decided to open it and everything seems to be fine : the 3 30A fuses, the small fuse in the switch circuit, all mosfets and diodes. I basically see no short anywhere. It seems more of on open circuit somewhere as no voltage go to the drive board. Any idea where to look at ? are there any other fuses ? Thanks.

[@kittyfanatic1980]

it actually DOES matter what you call those "switches" some can be MOSFETS(most cases) but other inverters use FET. also some of the bigger packages could be diodes.just saying bc you cant just call digi-key and say you need a switch bc thats what you get. lol thanks for the vid. its great!!!

[@cjdelphi]

As far as i was aware, a fet is a mosfet, metal oxide semiconductor / field effect transistor, the point is to differentiate between npn/pnp and mosfets

[@kd5inm]

Looking good Box

[@MrDoingEverything]

Off Grid Texas Homestead Some work ahead of my self for sure. Well worth it. Thanks Off Grid.

[@srpatilvideos3689]

Thanks for sharing vdo

[@realflow100]

I find it interesting this cheap 24$ 400W inverter with 1000W-Peak has frequency adjustment. and voltage adjustment When I first got it. the voltage was ridiculously high. 130-145V!! Yikes!!! As well as the frequency being way too high. I adjusted it. Now you almost can't even tell its a modified sinewave inverter!!! Not even any buzzing coming from a 36W oscillating Table Fan with an AC Induction motor. And my hairclippers/trimmers runs on AC and works almost identically as if its plugged in the wall.. barely even sounds any different at all! The frequency now is almost dead set on 60hz. Tools used? A screwdriver and multimeter to test it.

[@MrDoingEverything]

Nice

[@realflow100]

Thinking out side box Do you think 0.29 to 0.30 is alright idle current draw? The fan is running continously so it would use less if the fan only ran by thermal sensor instead.. Could i possibly buy a internally thermally controlled fan. modify the thermistor and extend it with wires and thermal-glue it to a heatsink near the input side of the inverter? Very near or on top of the transistors if possible? Would that work alright?? To make the inverter silent under low or no load? and use less power too? The inverter output cuts out at 16v! but the fan keeps running ever faster.

[@chintha1212]

very useful video. Thanks!!

[@MrDoingEverything]

Welcome

[@JevinDeml]

When you say 'switches' Do you mean like a on-off switch? I think those are mosfet transistors.

[@doc1939]

Yah they acten like very fast switshes

[@jeffclayburn3198]

If the transistors are "mosfets" handling precautions should be followed, static electricity just from handling them can kill them.

[@stevelamperta865]

Why would you say that ? Thats not correct at all ! if they was micro processors then you would be right but there not . why do people make statements when they really don't know what they are talking about ? to look smart ? but you actually end up looking stupid and a liar !

[@DRCE777]

IRF3025 and IRF840 should do the trick but I'm not entirely sure.

[@ghostlee900]

Hi grate video. I have 3 out of 4 mosfets blown in my inverter irfb13n50a but they are not available. I dont no how to deside an alternative. What do u suggest

[@MrDoingEverything]

Research mosfets for your type inverter. Meaning type as in your voltage. 12/24/26/48 AC side 120or 240 that sort of thing.

[@ddd228]

They are called MOSFETS.

[@RockabillyRambler]

I bought a 1000 watt jupiter inverter for grandmas oxygen concentrator, it les the smoke out i less than a minute xD uncle bought a 3000 watt unit from a truck stop and we went on our way....

[@pistolatumsolutions7842]

The MOSFETs can be tested on the board. There is a simple way! 🕵

[@RedShiftedDollar]

Care to elaborate?

[@Rangerman9404]

I have a 300 watt unit which runs for about a second before blowing a fuse. Since I usually plug it into my vehicle's lighter plug, it blows the 15 amp fuse in the vehicle, not the single 30 amp fuse that's built in to the inverter; it's about 20 years old and just recently started doing this, it is designed to be plugged into a lighter socket for low power applications, so how I'm powering it is not the issue. It only has 8 of those Mosfets and no blown out caps

[@MrDoingEverything]

+Rangerman9404 Sounds like something has a short. Whether its the inverter or the vehicle. I,d try it out on a stand alone battery. I,d remove the wire and the lighter socket and use just wire. Putting the wire on the back side of the inverter in the right order and the other end of the wires to the battery in the right order. POS TO POS AND NEG TO NEG. See what happens then. If the inverter is bad. It will not work. Then you know where the problem is. If the problem is on the inside of the inverter. It only takes for one thing to go bad inside. Having only 8 mosfets does not matter. Hope this helped out.

[@Elfnetdesigns]

You have a capacitor pulling to ground...

[@kainduran3480]

Good video learned a lot still trying to figure it out myself in my problem ... my inverter fan keeps on running constantly. The fence to turn off at night when it's a bit cooler.And the low voltage light comes on but the voltage of battery Bank is high. Then of course the inverter shuts down. It's a 48 volt cotek sp2000.so can you help?

[@MrDoingEverything]

Maybe needs to be cleaned. Temp sensor getting false readings from dust.

[@kainduran3480]

@@MrDoingEverything I took the inverter apart it was fairly easy it did have a lot of dust so I grabbed two air cans and I did the best to clean it. I put it back together and now I turn it on and a low voltage light comes on but the battery Bank is around 53 volts the battery voltage comes on of the inverter but with no load then of course the inverter turns off. So what do you think???

[@Seeds2freedom]

Good luck with that Box.....Is there a way of running a 12 volt current through it and test each tab to see if one is bad or not with a multi meter?

[@MrDoingEverything]

Seeds2freedom No That would be so time taking. The pathways of travel of current wow. Almost not doable. Just changing these switches is the best thing and almost a for sure fix. Its the simplest thing anyone could do as long as nothing else is showing to be blown.

[@MrScottytoohottie]

Those little switches are called transistors, and yes they are electronic switches.

[@munsters2]

If this is DC input, I assume it is powered by a battery. So, how does lightning strike a battery (or the inverter), unless it is left outside on your lawn?

[@hicoteo]

Just last night there was a thunderstorm and our inverter stopped working after a heavy flash of lightening. I don't understand it either. Our solar panels and controller are fine but the inverter stopped working. weird.

[@nazgullinux6601]

Lightning is a static discharge. MOSFETs and IGBTs are extremely vulnerable to electrostatic discharge. Even a high potential without a discharge can damage them. They need to be shielded well if handling and you have to be grounded so you hold no residual static potential. However this isn't fool-proof.

[@MrThewhip333]

Ironically it has lightning on the cover

[@LastExile1989]

Take a shot everytime he says switches.

[@MrDoingEverything]

You like that word switch. I am glad you do. Cheers

[@tge3069]

Should be called a converter but thnks for the info

[@thedavesofourlives1]

no, a "converter" is for charging batteries, like what is in an RV to run dc loads from grid power. inverters "invert" the dc and "switch" the mosfets to make ac from DC

[@hohokojo]

Please Can anyone help me please.. I'm having a very difficult time finding any relevant information about identifying the correct replacements of what I believe to be MOSFETs and transistors from a "blown" 12 v amplifier. The old components are destroyed and i would be very very grateful if anyone could let me know how to deal with this problem. Even if you can just send a link to a good forum or just any information at all.

[@ruipaulofsantos]

Hi, I have an inverter just like this one, but with another brand, (velleman). It worked very well for a few years, but now it broke. I need to know the value of a resistor that has burned out and I don't know its value. I've looked for the schematic, but nothing comes up. Do you have the electronic schematic for this inverter? Greetings from Portugal

[@MrDoingEverything]

No i do not. Color code them for there values from online charts is the best way. There is lots of info for that online. Cheers

[@lamey99]

Not getting any 12v lights in my rv..2 new batteries.. still no go... help? Bad inverter?

[@insylem]

They are transistors. Either BJT or MOSFET.

[@AWayOfLiving84]

☯️🌏🕵🏻‍♂️♻️👣🌌Mine had a surge through it too. It came back on twice but the third time it doesn't want to at the moment. After replacing the fan in it

[@teemum.9023]

pieces? what are they and what do they to, technically

[@danialphaomega]

it could also be be the IC's and not just the FET's also coils could be bad an ISO scope could help.

[@MrDoingEverything]

+danialphaomega Coils can go bad to . I wish I had a ISO scope. Maybe l,ll look into one and if the cheap enough to based on my affording l,ll get one. Thanks for the tip.

[@MrBrymstond]

Mosfets inputs and outputs and you better use thermal cream between them and the heatsink.

[@MrDoingEverything]

Yes of course. TC : )

[@richardknutson1675]

Good video. But ppl should test and diagnose before just a shot in the dark. Does anyone know how to test these components?

[@calimanmancali]

is it possible to change the input volt from 24v into 36v to match with solar panel. thanks

[@MrDoingEverything]

Not with most inverters there may be some inverters that have adjustable voltage inputs. They do sell step down converters and step up converters. Meaning the output is adjustable to match what voltage is needed. So if input voltage is 36 it could be brought down to 24 volts.. Just have to make sure its able to handle the amperage. There are many sizes to pick from. Not sure what your trying to do and don't want to guess it out either. Solar power really needs to go into a battery storage then from the battery to the inverter. But again I don't know what you hoping to do. Just do some searches for them step up converter or step down converters you will see what they have for sale to use. TC

[@fastacker2]

Chinese Capacitors and MOSFETS have very high failure rates. And when they crash, they likely take some other stuff with them.

[@thetorvic21]

hey so i have a energizer 1100 watt power inverter and the usb portion of it recently stopped working and i was wondering if you could help me , the usb outlets get warm when the inverter is connected to power

[@MrDoingEverything]

Have you measured the output volts. Good idea to get a reading of the volts coming out from the USB ports. Also if you use the USB ports you may have bent some prongs and its shorting out some acting like a element ((( little heater type thing ))) If so just straighten them back in line. Its really hard to say. But there are some checking points to check and perhaps its a simple fix.

[@williambautista4912]

i have here TBE 3000 pure sinewave. when i switch on power it activate the buzzer. those mosfet or transistors number was erase by manufacturer..please need help on these

[@wiseboyist]

So you have to compare it with another good one. to get mosfets names; it's the only way I found it useful

[@BITTYBOY121]

Cool video, Very informative - Those things that you refer to as "switches" are Transistors and some may also be diodes too. Be careful when you handle the large inverter circuit board and wear thick rubber gloves, As it has many capacitors soldered to it which store high power! (even when the inverter is dead and not powered up) - these capacitors pack a punch! and can give you a very nasty electric shock!! if you touch the back of the circuit board without knowing!

[@MrDoingEverything]

Thanks and yes being careful is a must for sure.

[@ahmedusman2852]

Hi I have the same the current not coming to the fan couller if someone can help please

[@shanethomas6368]

Long winded much?? ...sheesh

[@donarmi1942]

hello and im hopeing i found the person :-) i had a harbor freight 2000 centec that was getting its power from a generator whice over reved and must of blown the regulator and , the inveter has a risistor that got burnt black to where theres no way to identify, might you know what the value i can try to repair ? Many Thanks in advance

[@MrDoingEverything]

+Don Armi Do some research you should be able to find a spec, sheet telling all about the inside of your unit. That will give you all the valves for what ever your needing. Perhaps you could clean the blackness and be able to colour code it.

[@TheFlyre]

How khz you put in that?

[@johnkana7866]

shotgun tech. kapow...

[@kennethlyon3829]

What could possibly go wrong? Like 17 different things...

[@tunnelportterror]

EXACTLY, there is a shitload of other parts in there that can be bad, most likely all the IC's and those are not easy to diagnose

[@verynicesoul9025]

How much does a 2000Watt, transistor cost for Pure Sine Wave power inverter & how many transistors does it usually have?

[@MrDoingEverything]

I have no idea. Contact a shop that does that type thing is the best thing to do.

[@mohdkhairilhamid3280]

Good day John, Can you share how to perform measurement /function test for the transformer on that board?... Thank You...

[@MrDoingEverything]

Its best to look up the number and find the spec's. Transformers have a incoming voltage on one side and a output voltage on the other end. There really is no way to know unless the transformer was taken apart and the wraps of wire were counted and then the math be done to decide the voltage input/output. Best to look towards the spec sheet. Much easyer. Functions of transformers are either stepping up voltage or stepping down voltage. Hope this helps TC : )

[@mohdkhairilhamid3280]

Thanks John for the reply.. In this case, how do I know that my transformer is not the culprit?.. I have an inverter which is cheap one working properly before and now it's just giving me like 20Vac output. Any ideas?.. Thanks..

[@mohdkhairilhamid3280]

Thanks John for the reply.. In this case, how do I know that my transformer is not the culprit?.. I have an inverter which is cheap one working properly before and now it's just giving me like 20Vac output. Any ideas?.. Thanks..

[@MrDoingEverything]

If it were mine I would Test the output ends and the input ends. One end from the output and one end from the input you should not get a reading. If you get a reading something is shorting out. Is more then likely the problem. Hard part is to find that short. Hope this helps. : ) TC

[@newmoviestowatch7888]

The problem of my inverter is when you connect it into the battery it is only beeping..... And the wire attach to the battery is heating..

[@cjdelphi]

You have a short, probably a failed fet or transformer

[@simbamaphosa2032]

My 2000w inverter is giving over voltage when not loaded and under voltage when loaded, what could be the problem?

[@therider3939]

Probably doesn't have the feedback from the output

[@joelanicharles1787]

can you do a video on bestek inverter 1000w repair

[@All2Skitzd]

I'll do it if you send me one that needs repair, parts it needs for repair, and a shipping label to cover shipping it back to you. No but realistically with the price and build of those machines you'd be better off going to homedepot and getting a cobra 1000W for $99 and get 2 year protection plan for $12 that way you have something more reliable.

[@thetorvic21]

I have a 75w inverter that recently stopped working which has its own fuze can anyone help

[@tunnelportterror]

to the author of this video- these inverters are cheaply made in CHINA, and filled with IC's, those black rectangular components with many legs soldered in, that look like caterpillars with legs. assuming the transistors are bad, is a big mistake. those transistors are NOT CHEAP. they are $3 each and there can be 20-30 of them in there. so you spend $100 and it still does not work. the best thing to do is scrap it, and get a new one, and a better one.

[@MrDoingEverything]

I understand you. I have found the transistor to be much more cheaper then those prices. This same inverter I have here in the video is $500 dollars. So for my self spending a 100 or less with a little bit of work ahead is well worth it to me. To each there own for sure. Money saved is money earned. But again to each there own. Shopping around is where the best prices are found. Spending the time needed for the best price is much better to me. Then to just buy the first one's I see for sale. But again to each there own. Thanks for the tips also. Others will find it handy to know such info. I'm glad you posted some other issues these inverters can have to them. Much TKS to you. TC

[@howispossible7114]

Haha good idea

[@rubio7922]

I have a Generac ix2000 inverter generator that blue a inverter transformer. That's the only part that needs replacement but I can't find where to buy the part or which kind.. If anyone on here does these type of repairs please message me.

[@MrDoingEverything]

Very easy to rebuild that part if that helps.

[@rubio7922]

@@MrDoingEverything Would you be able to assist with this? I'm willing to ship the board. But I don't know where to look for the part. Some people told me to look at NTE-1 transformer 60 /120 but a 2 pin.. I don't know if that would work since it's for audio..

[@rubio7922]

ahh looks like this will do the trick EE19 bobin

[@MrDoingEverything]

@@rubio7922 Okay good you found a new one. Perfect

[@MrMac5150]

I have never seen a manual switch go out on the primary side in twenty years, of being a tech.

[@stevelamperta865]

You don't even have a youtube channel and your a tech ? odd but ok.

[@stevelamperta865]

you don't have a youtube channel...

[@stevelamperta865]

you have a channel?

[@edrianbada2792]

Sir? The specifications of my MOSFETs are erased? Is there a way that I can replace it with compatible MOSFETs? How?

[@MrDoingEverything]

Do some research to find out what the spec,s would have been used. Based on voltage and wattage and type inverter used. Good starting point at least.

[@edrianbada2792]

Is it okay to replace something just close to it but not really the exact transistor?

[@MrDoingEverything]

@@edrianbada2792 Some of the values could change by doing so. If i had that same issue. I would at least try it beings it would be my own. More so if it was very cheap to do so.

[@MichSignMan]

Did ya fix them? Was that the problem?

[@MrDoingEverything]

Problem solved

[@mtrltoolman]

Hi, i have a stick welding inverter and have an issue with it. When I weld it is fluctuate the output current like 15 Amps up and down witch burn through the steel i weld and some times have poor welding. I know how to weld I have an old transformer welding machine. This inverter welder is bad i notice that the output current have an AC current why is this happen? What you think is bad? Please help me.

[@MrDoingEverything]

+toolman talal Sorry I don,t know what to tell you. I have no idea. Keep researching it and asking.

[@mtrltoolman]

+Thinking out side box Thank you.

[@MrDoingEverything]

Welcome

[@All2Skitzd]

Is it a 115V hobby/home machine? If so start with the basics, make sure it has the power it needs coming into it from the wall. Try to use a 20Amp outlet closest to the breaker panel and if you have to use extension cords use the size requirements/recommendations as a very minimal but its better to go bigger and to make sure the end of it ain't all whored out. If it dont plug up good replace the end of the ext cord with a new heavy duty end. If your using a value machine like HF or some off brand replace ground clamp, check that the wire is connected good at the machine. Also try buying the smallest short rods you can get local and do a little welding with it and see if your cables get unusually hot. Then after reading the show more on your comment if it's showing a small amount of AC it's no big deal but not having a lot of experiance repairing those types of machines I can't help to much espcially not knowing what kind it is but I would say look for chips that look like this (but will be a higher model probably, but I just happened to have that already open in a different browser tab. Could be a lot of stuff but I would look there first.

[@mtrltoolman]

All2skitzd thanks for your help . it is 220v welding machine and the main power is 220v . i changed the stick holder and the ground clamp and tightened every screw and connectors to make a good contact and i always make shore the ground is in clean spot to make a good and stable welding . the problem is in the cheap Chinese machine and i don't know any thing about troubleshooting and fixing inverters . is you knew something about it please help me . thanks again .

[@muhammadzeeshankashif5380]

Sir. I have soure company inver 1000w. I have faced some fault . Whin i connected bettory power. Then dc side mosfit Hy1906c blast. Pls guide me how to solve this is problem. Pls tell me the voltage of mosfit point. Drain voltage Sorce voltage Gate voltage Thanks

[@MrDoingEverything]

Just take the code from the blown parts and search them out online or on ebay and buy and replace. Then you know you have correct parts. Best way

[@cjdelphi]

I wouldn't remove them all, i would test for shorts rather than remove all of them

[@theblacksheep1000]

Hi, I bought a PEAK 3000W inverter and as soon as I connected the 12V +/- terminals it burned completely up! WTF happened?

[@MrDoingEverything]

If its new just return it. Sounds like a problem right from the factory.

[@scottstevenz8732]

you bought a pos

[@Kevinegan1]

Man, if there is a way to test them while on the board that would be the way to go. All the time plus a$125.00 in parts makes it well worth the trouble to test them first. What you are doing is not diagnosing and repairing but parts replacing until the problem goes away. I would be mad as hell if an auto mechanic did that to my car and I'm having to pay for it all. What you are doing isn't too smart. If you can't determine which is bad then replace one and check. If that doesn't work replace the second and so on. You are throwing out the baby with the bath water. Personally, if I had no clue what I was doing, I would take a new one of those parts and solder on three extensions. Then I would power up the inverter. After the inverter is powered up I would manually connect at the base of the suspected failed part by simply touching the extended leads. I would go down the line until the inverter came on. Then I would replace that single part. Or better yet I would watch some of these YouBoob videos in which the electrician is using test equipment to diagnose the problem. Then I'd do what he demonstrates. I appreciate you trying to help people but random part replacing is not the way to do it.

[@MrDoingEverything]

Not the smartest way no agree. But you know what. The parts are cheap and what it takes to change them out is not hard either. Just some time is all. $125 in cost is for more then one inverter. So ya its better then watching tv. Plus I do this for my self only through out it all I get to learn some. So to me its the best way of doing it. Speaking for my self here only. What others figure is the best way is completely up to them for sure. Its all good. Ya not everyone can do things the way others may want them to for it to all make sense to there own happy understandings. We all have to cope is all pretty much is the way I see it anyway. We sure do all have opinions about all sorts of things. I hope all of our opinions work out for our self as we have them.

[@just1lifexx11]

Yes. But sometimes its capacitors too.. and in the worst.. is you put new they blow up in 20min again... sooo yeahh. Inverter SUCKS

[@swedensy]

Im not so lucky, replaced all dead mosfets (6k inverter pure sive wave), On test they all burned out again, need to look for the cause.

[@MrDoingEverything]

Sounds like a short. More then likely a capacitor is bad.

[@tonysegulin1278]

Artjoms Pugacovs

[@MAYDAYDEEJAY]

And Your ass'umption is based on what exactly ? Any particular cap on Your mind ? Gr8 knowledge man !

[@MrDoingEverything]

I agree. Some folks are so good with this stuff and never seem to give good advice other then saying bring it in. Ya of course for a high cost. Why not. Who is not aiming to make money with what they know right. Well many things can sure appear like GR8 knowledge. But for some its pretty neat and cool. So maybe we should never allow our self's to become such pro's that it removes the fun from doing it. Which mostly was the reason to start with it all. Ya I like staying at beginning stages for a lot of things I involve my self with and allow it to still be fun. So what if things don't always turn out the perfect way we may have thought. SO what. I will never get away from it completely any way. I don't think others will be either. Tc : )

[@donarmi1942]

Hello Sir, did you find the problem to your inverter repair , or decide to give up ? Thanks

[@thetorvic21]

I have a 1100 energizer inverter and it turns on but a few seconds later it beeps and says overload and nothing is connected to it, can anyone help thanks!

[@DonnieDarko1]

thetorvic21 Did you ever figure out the solution to the beeping without having anything plugged in?

[@jeffclayburn3198]

Why not just find the bad or faulty part, the transistors/diodes might be o.k. it could be any of the other parts, maybe a 50 cent transistor or a bad cap in the control circuit. your going to a lot of work/ cost for something that might not work still. And all the heating of the board for no reason not good.

[@hicoteo]

did this fix work?

[@MrDoingEverything]

After i changed out some resistors also it sure did.

[@chikiguites]

When the fuses blow out what it can be the problem?

[@MrDoingEverything]

Sounds like a dead short somewhere..

[@chikiguites]

​@@MrDoingEverything Yes of curse... but; in the ac mosfets or dc mosfets, or may be the ground? the probem is that not turn on the shich it coud be a electrolitic capacitor! i have a flare in the bridge of mosfets i change the resitance and the mosfets, but still have a proble!

[@MrDoingEverything]

@@chikiguites Its really hard to say. I would trace everything and look really really close to maybe see if there are any other signs something is wrong. It could be the caps yes. I have no simple answer for it. Sometime its simple and other times not so simple. Keep at it or but a new one might be the best way to go. Inverters are pretty cheap to but sometime not worth fixing the burnt one.s.

[@chikiguites]

@@MrDoingEverything Thanks... I will traying to repair it! I m going to spend only before the real cost of the inverter... I suspec that i m going to find the answer! Thanks again!

[@MrDoingEverything]

@@chikiguites You welcome. Sure you will find the problem just keep at figuring it out sooner or later the problem will show it's self. Best of luck.

[@richbailey9588]

I would say it matters what those are when you go to buy them duh

[@Elfnetdesigns]

1750 watt simulated sine wave inverter for $200 and a 3Kw for $400?? You got ripped of. Only pure sine wave inverters are worth repairing anyways. These things are good for scrap metal once they go bad..

[@MrDoingEverything]

There are so many types out there its hard to know what the good ones are. Also even hard to know when there truly pure sine unless one has a gage to measure the waves. Which I do not have.

[@donarmi1942]

Thanks , ive tried to find the spec;s , but no luck. Hopeing you might give me a general risistor value that might work , Thanks Again for your responce

[@MrDoingEverything]

+Don Armi That's pretty hard to do. I mean I could tell you one. but you might end up wasting your time. So I,c rather not unless I knew for sure. Its not cleanable to be able to see anything that might help. I would really try to clean it up and look real hard or I would even call the place that makes them. They will be able to tell you. Or bring it in to a shop and show them. They might be able to tell just from where its at on the board. Good luck

[@nathanaelkumehs1954]

Power on and off

[@Winghtv]

i have a 5kw 48v inverter, the green light comes on showing the inverter is on but a beeping sound keeps coming and theres no output voltage. my inverter brand is psw7-cntl

[@unoefxz]

transistors..

[@luistoribio6031]

HP=caballo de fuerza=10nv

[@MAYDAYDEEJAY]

I fkn wonder how is this possible ? Some dude out there without any knowledge in electronics makes a video, talks absolute shit, and then people ending up faffing about with things they have no idea about thinking 'oh... I can fix it to' !! Jeeeeezooooos ! Most of the cases... I mean MOST of the cases, if N-fet get shorted, it also shorts the gate thus damaging the gate driving circuitry. So once You replace all the mosfets and You power it up again... TaDa ! and magic smoke reappearing again... WHY You may wonder... 'I have done exactly as he said' Vids like this should be automatically banned ! Good luck people !

[@MrDoingEverything]

Ya everyone needs luck time to time. Some time there is no better way to learn other then messing up. Some time its a better feeling then dealing with some folks to related things. I guess what I'm saying wonder is ok to points. : ) TC Mark

[@RM3MB3R]

Mark Masterson well NOW you tell me! I almost died! ⚡️😳😵💀

[@kylecarrington8989]

You have to keep the smoke in the box. If you let the smoke out, it won't work anymore.

I appreciate videos like this as it shows we still are living with some freedom in the world and it's not a complete socialistic communistic system like you want. That's what 'youtube's ethic was at the start and to censor this would be evil, even if he's completely wrong, that's up to the viewer to make an informed choice about. I see people driving around texting, smoking cigarettes, throwing beer cans out the window and child abuse in the world. Those people know the 'risks' associated with those things.. so why do they occur?

[@dedskin1]

Does anyone have any idea , why Inverter wont power off , its a CAR Inverter , inside car amplifier , and it wont turn off , should be turned off always , if not turned on , but it wont turn off , as connected it works and thats it , waht a strange problem, it works , its been serviced i see parts changed , so its been fixed but bad obviously , needs to be switched

[@MrDoingEverything]

Sounds like a bad power switch.

[@dedskin1]

ITs exactly that , the only problem the power switch , is in the car , if there is no car , there is no switch , so nothing to turn it on, but it is ON i can tell you that , i hooked it up on 12V power supply and it is ON, it works , its not broken . There must be some kind of internal switch that acts like a Relay , that must be shorted , powering it up when its not switched on , so then its NPN transistor that is shorted inside , and without any positive input on Base , it turns on . Where would that be ? Im sure usual inverters have that just the same , in series with a Mechanical power Switch ? Right ? OR not .

[@MrDoingEverything]

Just use the old feeds and install a switch. It may have just turned on when the key was in run position. Should be easy enough to install a switch with the old feeds coming out. One of them feeds may need to run to a power source which the big POS cable feeding the power to the inverter would work.

[@TolaTrucking]

Watching this while dealing with a POWEDRIVE 3000 that just started beeping and displaying over load protection on even nothing plugged. Only 2 two years old

[@thagrit]

the switches are called transistors. probably npn transistors.

[@RNA0ROGER]

+thagrit NPN's could never take the current

[@t0nito]

+thagrit They're MOSFETs

[@thagrit]

+t0nito Mosfets are transistors.

[@t0nito]

+thagrit And general purpose NPN transistors aren't MOSFETs

[@RNA0ROGER]

t0nito Your right about that one getting it wrong is a fatal mistake.

[@kurtostrom9525]

DURRR DURRRRR DURRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR. I duurrrrrr dun fixxt dis electronix device DURRRRRR

[@michaelagbayani4961]

You do think repairing electronics is that easy😂😂

[@MrDoingEverything]

Nope But can be sometime. It's not always complex.

[@johnnyjimj]

10 minutes to say something that could be summed up in less than two?! Come On!!! You could have easily shown the whole repair process in all that time!

[@MrDoingEverything]

+JohnnyJim J Johnny there is no way I could of fixed this in 10 minutes. No way. Not me anyway. Just to prep it all is going to take longer then 10 minutes. There is a lot of care needed to be taken here to make sure everything is connected good. Rush jobs are ok for some things. But not all jobs

[@johnnyjimj]

Sorry if I hurt your felling being so direct and thanks for accepting my criticism... But it felt like it was going on and on! You know there is such a thing as cutting and splitting ;-) Anyhow I tend to be like that myself rambling on in my comments so there ;-) Thanks for posting this anyway, I'm going to remove all the FETs on my broken inverters, if indeed this is the most common failure mode and what bothers me the most with these things - their inherent fragility and unreliability.

[@MrDoingEverything]

+JohnnyJim J I hear you. The way I see it. They can either be garbaged or try and fix them. So I try to fix them. Being parts are able to be found a pretty cheap prices. Compares to how it was years and years ago. That's just what I do. Others can do what they want. That's not my call. Well good luck any way.

[@ngodinh7153]

nhiều tiền v

[@rkb6783]

You Got LIES told to you... Please quit repeating the LIES. YES ! YOU CAN TEST ON BOARD ! DO NOT REPLACE ALL OF - them... Just simply test - & - REPLACE !

[@MrMac5150]

Ignorance grows. Go pay a tech to test the Mosfets for 20 bucks. it could be a shorted capacitor, or a transformer. also check the switching resistors on the gate.

[@MrDoingEverything]

+MrMac5150 Its not about ignorance at all MrMac. I have been in to see a tech fellow. He told me on the phone he could test it all out. Then when I want there the story changed and he told me he could not test any of it. Small town here not many people doing this type thing where I,m at. This was the reason I decided to go the way I did. Its also fixed now. Can,t say what part was bad. But I changed out what I said I was going to and it solved the problem any way. Its all good. Thanks so much for the tips MrMac

[@MrMac5150]

Thinking out side box Yes but it might be just one mosfet why replace them all, you can test them on the board for shorts, but on transistors you might want to remove them to measure the gain. For switching mosfets you can test on the board.

[@MrDoingEverything]

+MrMac5150 That was my aim at first with the tech fellow. It just never finished that way. I do understand what your saying and thank you for saying it.

[@light4163]

The problem of my inverter is it only bring the red light as faulty and not work

[@oveterinaryTR]

I understand, you try to make some helpful video, this is good but you are pushing and pulling unnecessarily to fragile and expensive fets & igbt, theirs legs broke within 4-5 more move easily. you are making more damage. I did not like it. This is not butcher's job. You must be gentle.

[@MrDoingEverything]

Gentle and carefully yes. I was moving the old one,s in the broad which were going to be getting changed out. TC