How to check fuses, diodes, transistors, voltage regulators

How to check fuses, diodes, transistors, mosfet, voltage regulators in circuit and out of circuit boards, if TV doesn't turn on or has no red standby light then check the power supply fuses. Some fuses can blow out during a surge or lightning strike or shorted diode or transistor goes out.

[@backoff7659]

Tampatec, your tutorials and others like yours are what makes KZbin great ! Thanks, James.

[@BomJimmy]

Please do not add music track . it is too scrachy and unnecessary for such educational videos. Thank you.

[@RobMacKendrick]

Thanks for this! Aside from sussing out device failure, it's good stuff for checking out cheap Chinese components before installing them.

[@joseaispuro4068]

Thank you so much brother!! I learn a few things with your video by using the multimeter specially for your detailedly explanation again thank you so much

[@trebel]

63 years old and still learning, Thank you

[@owensharp8568]

You sir are a legend. Best video on this subject that I've found.

[@israelortiz7147]

Good I liked it. Just one observation. Transistors cannot block voltage, even if a transistor is open you will still have a voltage across it. Transistors will block a current flow or it will let it pass. That is what it will do. But in general you are a good teacher....

[@dahyaification]

Your video is the best. you are a good teacher.

[@azemuth100]

Even for me a hobbyist technician who graduated years ago, it is always something good to remember

[@jenlorraine5961]

This is super helpful. I am trying to fix a Halloween inflatable that has the "short circuit" light effect. These are "simple" circuit boards, however I am not a technician. I have tested everything on the 2 small circuit boards. There seems to be a transistor that is not functioning. Sadly I have tried finding the transistor number and have had no luck what so ever. Thanks so much for the great video it really helped a non technician like me.

[@Automationacademytv]

Thanks for your video it helps my channel grow and push me make more, Good Job

[@amado1957]

Cool videos TampaTec...keep em coming!!! I live in TPA as well, I am an Electrical Engineer by Schooling, but have worked as an I.T. guy all my life. Keep making videos !!!

[@TampaTec]

Thanks

[@SDsailor7]

***** How do i diferentiate a transistor from a voltage regulator they look similar?great tutorial!Right now i am working on a reel to reel with a problem on the control area.it wont play when i actuate the play switch (switch is good)CheersRob

[@shakirpadattil7703]

+Tampatec I want ic no digram

[@bryantalfonso9561]

Thanks man it is fast and easy to understand, you really deserve a billion subs

[@jareddelacerda3572]

This is such a great video. Thank you for your content and teaching of these key topics!!!

[@carmelodonato1952]

I like your teaching style, you keep it simple.

[@maccasda]

67 and still learning i've just learnt more in 10 minutes than i have in 5 Years Mate you are the bees knees a gift of teaching is what you have thank you for making electronics a lot more interesting for someone who was ready to just chuck stuff in the bin because he couldn't get answers God bless you ....

[@bryanogiedescutido3093]

maraming salamat po (thank you very much) im a filipino and this video i learned a lot about diode thanks again

[@billyhernandez9928]

thanks TampaTec you made me understand the power of the multi digital meters... I own 3 of them thanks to you and use them a lot!!!!!

[@Martin-ot7xj]

Its was very very very perfect and useful and interesting tutorial video. Please upload more like with video. Please test and check components of mainbord on laptop please, like resistors and capasitor and ceramic capasitor and mosfets on laptop, you teaching sooo easy and perfect

[@joshua-the-seer8494]

Dude thank you so much. I am trying to learn to fix & create electronic devices. You explain things very clearly. I appreciate the metaphors and visual representations. Keep up the great work!

[@robertjoseph480]

Thank you so much for your explanation it's very helpful .

[@CSSIandAssociate]

I always learn so much from your vids. Thanks....

[@kmymerry5698]

best tutor so far thanks

[@retgunz]

VERY helpful! I'm just getting started with troubleshooting, and that information was like gold.

[@teebrown4469]

Great video always wanted to learn electronics as a hobby this info is priceless Thanks Brotha, ps Now I can try and test my Halfer 500 amp

[@TampaTec]

check parts on heatsink and solder connections like resistors

[@mBijuSolutions]

I wish I found these videos early on :c . Definitely the information I was looking for. Thanks much!

[@tonyb961]

Very informative and extremely helpful, thank you...

[@fonografx]

OMG! Lifesaver! The section on transistors was a great help!

[@youngerwong204]

Great,straight and to the point.

[@yulmoncrieffe4888]

Totally helped me, man. Wonderful tutorial

[@servisferraripassion6963]

Thank you master.You are the man,very simple explaining,Good job :-)

[@josephfiumara9065]

I learned a lot from this video . Illustrations help out a lot thank U ! How about capacitor video like those box cap how to test and stuff the weird one's ? Thanks again

[@sofiaagostonelli5893]

This was really helpful, learnt heaps. Thanks!

[@ssn7870]

Well explained bro. 👌👍

[@jetcone]

65 years and still learning, its a great day! Thank you Tamaptec!

[@michaelleejr9671]

Thanks bro this video helped me tremendously!

[@acegray3230]

good job a big help ....thanks, but would be better to hear you without the background music

[@honsey94]

Your Video helps me a lot. My Music-System is not working and i cant find the fking error. I´ll measure it again, lets see. Thumbs up. Greez from Germany.

[@Jason-le5nm]

Your extremely helpful!

[@jimdamiani1823]

Excellent video!

[@IsaacOLEG]

as usual, gernerously amazing ;)

[@WBT714]

You explain so we'll. Thank you. I always had trouble remembering in school but if the girl in front of me bent over to pick up her pencil and I saw her panties, that image was tattooed on my brain.

[@sofiaagostonelli5893]

that went from 0 to 100 pretty fast

[@magbulpasha8925]

good video sir i wana learn ic chips testing ....please do video for that...tq

[@mlhoward4469]

What would be nice to see is how to check these things in a circuit. I know accuracy will not always be great in the circuit but being able to tell if something will pass of fail would be great for most people.

[@THOMMGB]

Thanks for explaining in simple terms how to check transistors and diodes. It appears that using the diode mode rather than the ohm setting on your meter is a much easier way to tell if you've got a bad one. Regards, Tom

[@arjunsarki705]

nice thank you

[@vnqualityservicesinc.955]

thanks , you did very easy understand

[@ThriftyToolShed]

Is the diode reading .19v forward voltage really bad or is it a schottky diode which are typically around .2v forward? BTW great video! Thanks!

[@fishmut]

Can not find anyone who can fix tv,s where I live so I’m very interested in learning electrical to fix them , I’m a beginner but gotta start somewhere, this video was definitely helpful , thanks a bunch . 👍

[@gringoblen3716]

ure awesome my friend!!!!i remember my fathere when he teach me repairng in electronics circuit....but in the world of electronics u need study more and more technics...

[@fishmut]

Yep same with everything alse like car mechanics etc, the world is changing from the way we all live with all the electronic gadgets these days and computers.

[@chetanchavan3242]

nice work. loving your videos

[@beadsman13]

Thanks! That is very helpful video.

[@frankreiserm.s.8039]

I learned about troubleshooting voltage regulators, but I knew the rest. Framk Frank Reiser Video/Audio Service

[@majikfuzzybutt7390]

52 years old and still learning, Thank you

[@Zito057]

Me too,.and with old young 61 years.

[@pcartisan2721]

What’s that phrase - Learning is FUNdamental? 😉 So many interesting things to learn too.

[@weedaadthomashaas6363]

How to Mack aspotwelder with a micro-transformer

[@herminojaleco2361]

Its good to learn about basic electronics,but the truth is they do not teach of how to determine in bipolar transistor it is PNP or it is NPN and how to know by tester its pin is base,colecctor,emitter by reading not by position of a transistor or MOSFET transistor

[@gassanali8667]

HERMINO JALECO there are so many videos on that

[@kalungidavid1064]

GOOD VIDEO DEMONSTRATION

[@mangamjayasudhakar5888]

very very learning tutorial...

[@Learnelectronics738]

Hello Ilike your video thank you people

[@JyLMGroup]

Between you and Louis Rossman have helped me A LOT, thank you for this videos, im going to do the same but translated to spanish.

[@lowrepulaagu]

Quite clear explanations. Thanks. Question: Do we have to unsolder them from a board or how do we test them when they are on a power supply for example? Cheers

[@oxnardadrianlopez6684]

This video is awesome. I learned so much from this one video. I can't thank you enough. Subscribed for sure!

[@dandewolf7250]

Great videos...Thanks for all the help. :)

[@toomanyprojectstx]

ive learned so much off your channel. thank you TampaTec

[@matthewgeazy7365]

wow thank you for that video i learned so much

[@morphuk1]

Brilliant tutorial. Very clear and easy to follow, thank you!!

[@melannieworld]

Do you need to removed them from the board? or can they be tested while been in the board to get a correct read

[@TampaTec]

It's more accurate to remove parts.

[@melannieworld]

@@TampaTec thanks for replying. I've been trying to learn more.

[@MrVinhguitar]

How to find a right rectifier diodes for replacements?

[@RixtronixLAB]

Creative video,thanks :)

[@kwanelekafesu8727]

thanks a very good video

[@blackterminal]

Please do your videos without the music. Its both irritating and makes it hard to hear what your saying. Aside from that I like your videos.

[@TampaTec]

true, I don't use music any more unless I fast forward the clip.

[@gabrielamacias8307]

Tampatec

[@MarcoMartinez-ck9vq]

About a little instruction on car amps when capacitor are bad or some of the other small little tiny dials

[@harbselectronicslab3551]

Emitter , collector , Base.............. not Emitter , collector , gate. Also don't assume all transistors have the base on the middle pin

[@TampaTec]

Yes, thank you for correcting. I should've used spec sheet to give most accurate information about that.

[@harbselectronicslab3551]

@@TampaTec no problem.....keep up the good work !

[@p2g1949]

wow! learned more in 5 minutes than I thought was possible. thank you very much. keep the tutorial videos coming.

[@johnrees44..G4EIJ]

Many thanks.. John...UK

[@horurkristinsson5292]

Super useful, thanks!

[@emmanuelharuna586]

thats very helpful but how about str transistor?

[@sattamassagan290]

Great video, I'm a little new to this. How do you tell a PNP apart from and NPN. Is it written or is it after testing by trial and error?

[@herbertsims399]

If you use the red lead (+) on the base or black lead (-) on the base to obtain your display on your multimeter. In live circuit use your voltmeter setting make sure to make your ground stationary before you test voltage in a live circuit. Use only 1 lead never make yourself a ground source while testing a live circuit.... I would suggest you work with a dead circuit use your Ohm or Diode/Tone setting.

[@zarcon42]

thank you!

[@jennajohnson213]

Will you get proper reading on components without removing them from the circuit

[@clydebaker3484]

Thank you for explaining simple ways to test those items.much appreciated.

[@jel135]

I turned wrenches for 45 yrs and due to the fact I lost one leg and the other one is weak so I need a new job in life or I,ll go nuts so where should I go to learn tv repair John

[@skuartle]

Hey tampa i have 2 transistors the 1st is a SBR20150CTFP reads 181 left leg and 176 right leg PNP and the other one FCHS20A08 reads 227 and other leg 226 PNP too is that low reading ok? Id really appreciate ur help man thanks

[@eldernuru22]

Incredibly good

[@johannesbotha3599]

ime in the industry for some 20 years and this guy knows his stuff you can trust his guidance

[@hectorpascale1013]

@6:10 IMHO the picture is wrong. The two Multimeteres to the left: the reading should not show 2x 0 Ohm´s, that would be 2x SHORT. The Display should say 1kΩ- 10 MΩ (that´s what FLUKE says about R-Values Range). There has to be some Resistance that the voltage drop across the junction develops. Or am I completely wrong? Good Video anyway 👍

[@Shutyourjibbs]

Do all these components need to be removed from the circuit before you can test them?

[@TampaTec]

Yes

[@roimark358]

In my testing/checking MOSFETs using Multi-meter, when the gate is charged, why some MOSFETs (N-channel & P-channel), the drain to source let us say 0.002 or less my meter reads, others starts with more higher like 0.435 and running up as fast as a second or half a second until showing infinite? Discharged test is working (no reading on drain to source). What does it mean? Does all MOSFETs behave like that?

[@B1TMAN]

Thanks Tampatec!

[@alchemy1]

At around 6:58 you got distracted. You are testing PNP transistor. You said I got my positive lead on the N, Well, you actually had your positive lead on the P, correctly. But in a bit you got it straightened out. There was some miss naming a tat before that as well. It is all good brother.

[@TampaTec]

Thanks, for correcting me and explaining your logical view instead of many others that rake me through the hot coals. 👍

[@WilliamVG]

Can we measure a diode in circuit? will it be still accurate? I have 4 diodes with the following readings, in diode mode I'm getting, .002v, .510v, .510v, .009v. Anyone?

[@fixrepairtv6450]

thank your for video

[@Veryabcstories]

Hello Tampatec. I have my radio displaying f76 on display. it is Panasonic MD STEREO SYSTEM SA PM35MD and it does not power on. What could be the problem?. Please help!

[@sciclunam]

One of the best vids on youtube on the subject but how to test Schottky diodes? I have a faulty Samsung TV power supply (no standby) and I am trying to test several Schottky rectifiers (links below). I am getting readings both ways - around 0.8v one way and around 0.3v the other way (switching multimeter probes). Is this normal for this kind of components? I couldn't find a vid on how to test these. Thanks. www.onsemi.com/pub_link/Collateral/MBRF1545CT-D.PDF www.smc-diodes.com/products/data/SBRF20100CT%20N0921%20REV.-.pdf

[@stanthology]

Good vid. Clear. A good base of info.

[@SevenDeMagnus]

Hi. If say you need to replace the diode and they don't have the exact one. Could you series a diode so that it matches the value of the diode you're replacing? By the way, what's the value of a diode if it has two stripes and it says M2? This is on a Famicom video game system's power supply. Are those transistors, the same as the transistors in a CPU or a GPU? If you had a billion of those big transistors, could you built a CPU? Thank you. God bless, Proverbs 31

[@longneck43]

Paul I have a samsung lnt4071f with just a white screen , power is fine but no picture at all. Is this a t-con issue?

[@TampaTec]

yes it can be tcon but also loose connections or bad main board or defective lcd panel. I do video chat helpouts via new app called Google helpouts, use code paul51p for free helpout.

[@IbOverIt1]

So my vizio m552i-b2 made the dreaded POP when it was turned off hasn't worked since when I opened her up I found a popped black 7 legged ceramic whatever there called well actually one leg was blown off all this just before secondary DC side .... Where can I get parts I'm trying to find the schematic

[@DataCenterExperts]

I have a burned mosfet from ST, it's a P80NF55 @ CZ OYN 6 MAR 839! can you explain what are these digits mean! thanks

[@megalodonscortex7578]

Can this help with blown amp? I am getting loud hum from a BP7004 and I changed and upgraded the capacitors believing that it was bad. I put everything back together and got no power light or sound. I take out the amp and plug it to power and get a small hum from it. I don’t want to replace them for $200 for 2 amps if they will have the same problem down the road. Please help.

[@randolphramirez4587]

I'm looking for a schottky diode I know how to find the number on top of Chip to find it but what are the other numbers underneath that number en2308 this number finds what I need the other numbers are 60 04 helping my mom with her auction business sometimes they work sometimes they don't thanks. Thanks to you I am able to find the chips and learning to test.. from San Antonio Texas

[@donfrancis9466]

Very helpful :-)

[@Brijeshkumar-fc8zj]

hey bro you said npn or pnp transistors as negative positive does it really?....cause i have studied electronics n is n-type semicondoctor is pentavalent(germanium) and p-type is trivalent semiconductor(silicon)...and i have a question you said we can use two diodes as pnp or npn transistor(which takes more than 3 volts and gives two volts output)...for instance if we connect two positive sides(to act as base) .... and give 4 volts to it and what would be output at emitter and collector?....and what would happen if we connect two diodes in other way?