Tv killed by a cockroach? Tv power supply repair

[@allelectronicsrepairs7165]

Hi Sorin. Greetings from Australia. Great video as usual :-}. Now, when you connect the light bulb(s) in series with your device, in case of a short, you limit the current to the device. Say, with a 100W bulb you get the current limited to 430mA @230V. So you can test your board WITHOUT blowing your fuses, and something actually might get hot. Of course, if you want higher current, use more bulbs - a total of 230W for 1A or 460W for 2A and so on. I have built my AC current limiter out of 4 bulbs, that I can individually turn ON or OFF each, giving me more flexibility without changing the bulbs for the different power. I am sure you knew this - just wanted to explain for other people watching and wanting to learn something :) Regards, Jerry.

[@aegishun]

I used to watch your videos because I wanted to repair something. Now I'm watching your videos because of entertainment and there are a lot of things to learn from you. Thanks Sorin, keep this YT channel up ;)

[@XLR8RRICK]

WOOOHOOOO I am happy to hear you are taking steps to improve your health. You are important to so many people and you give your time and knowledge. Thank you Sorin.

[@Androx74]

Someone says that tv firmware is bugged, this is the real deal a real bug :P, nice video always learning a lot.

[@adriandeb2710]

Thanks

[@Omul1984]

Lasă-te și de fumat! Lumea are nevoie de oameni buni, nu de nume pe cruci! Super canal, super om!

[@hbh3144]

Sorin: Let's smoke this problem out! Roach: (got some toast) Sorin: (sniffs it) WHAT was that!? Burning roach smell added to the list

[@FireandFrostHVAC]

Great video. In my HVAC business we see this kind of problem a lot. Insects get into the cases of outdoor refrigeration compression units when the weather gets cold, and they congregate in between the contacts of three phase contactor switches because of the heat coming from contactor coils. I’ve seen bugs take down 10 horsepower walk in coolers with $8000 worth of food in them...

[@markhonea2461]

I could a frog (quite dead) had shorted the defrost control board in a unitary heat pump. It was a quick diagnoses.👍

[@christosmoutevelis4896]

Nice fix ! Thank you Sorin . Everything comes to him who waits

[@electronic7979]

Nice repair video

[@robertoestebangrau5197]

Sorin... thank you... thanks to you..., because you're a good person... God bless you Sorin...

[@zenoelea8239]

I was shouting with my headphones on "its smoking from the socket", my wife thought the house was on fire. 😂😂 Why not just test the the board with the insects removed first before renewing the socket? That's why the board fuse did not blow, the short was before the board fuse. Brilliant entertainment. Thank you Sorin.

[@veskovesilev2019]

The first time the bug got there and got fried the heat fried the plastic of the socket and turned it into conductor/resistor. He could have just soldered the cable he cut earlier directly on the place of the socket. That would have been the fastest fix.

[@K1ZEK]

That was very entertaining and I'm glad you videoed it. Who would have thought it. Stay well. Leo

[@harryohanson]

Wow! Bugged TV! Just eliminate the plug all together and solder the cable directly on the board. I really love that you are talking through the thinking you are doing. Helps me to understand what is going through the mind of the professional tech.

[@cambridgemart2075]

The old trick for powering up equipment with a potentially short-circuit using an incandescent lightbulb in series works very well, it can dissipate a lot of power and the resistance is very non-linear, i.e. almost zero when the lamp is cold and several 100 ohms when hot. Fault finding is possible because the forward voltage drop of the semiconductors can be measured under power.

[@DevilbyMoonlight]

as a kid I remember my dad doing that to a TV nearly 50 years ago

[@wisher21uk]

I use that method before that I just re-replaced parts I just fitted lol

[@davenally8672]

Very true Mr Cambridge :) The old tricks still have value and are cheap to implement

[@windycl111]

you are so kind. I LOVE your videos.

[@peteralexander478]

I have had similar in past, a slug, from cellar and wall cavity, has gained access to rear of a wall socket and fried across the terminals. Whole ring main out.

[@skfn]

Master of improvisation!

[@melplishka5978]

Sorin your knowledge is priceless my friend.

[@andyturner1727]

Sorin , you do give back by sharing your knowledge & videos .

[@pa4tim]

I use a variac and/or a series lightbulb for these kind a things. (and every DUT is behind my 1:1isolation transformer) My first TV repair (in the 80's, I think was 17) Also a short. I placed a matras and pillows over the TV, bridged the fuse with wire and then plugged in the TV with an isolated pair of pliers. Result, Beng, collected the pieces of the exploded capacitor, replaced it and it worked again

[@panagiotiszafeiriadis8425]

Nice job 👍

[@joseantonioteixeiraazevedo5166]

Aqui no Brasil nós chamamos isso de gambiarra! Parabéns pelo trabalho e iniciativa!

[@anghelcristy7677]

Salut. Ca să nu mai arzi siguranțele de la cabluri poți pune un bec de 100w în serie și atunci când este în scurt sta becul aprins, asa procedez la amplificatoare ca să nu ard tranzistori și atunci știu sigur ca este în scurt 💪😁

[@johnathanasiou9284]

That the internal fuses didn't blow, but the mains plug fuse did can be described perfectly by kirchoff's current laws as demonstrated in this case by the very low Rl being the cockroach itself being closest to the 220v mains supply

[@aaa000777]

The internal fuse is a T5.0A. The "T" means time delay. In other words slow blow.

[@johnathanasiou9284]

From memory T stands for Traeg which I believe is German for delay or similar. Swecheck had a fantastic booklet on fuse types years ago

[@ecaparts]

The fuse on the board doesn’t really matter, since the short was before it. That’s why it didn’t blow…

[@ve3krp]

I agree with Loizos, use a variac and monitor current/voltage... I couldn't live without mine....

[@repaircorner3322]

The problem is EICCR: (Externally Integrated Cockroach Carbon Resistor) :)

[@ElectronPcRepair]

😂

[@kimspeller5379]

nasty bit of tracking there sorin ! ive had boards do that as well ! its like they wanted to make their own pcb tracks ! lol.

[@raymondgalland8074]

Sorin You Give Yes " Free Good Knowledge "

[@Jejie1029]

Great ! Love Television Power Supplies

[@jayrajc]

Sorin, to open adapter casing apply petrol on the sides and in 30 sec it will open without cracking

[@silviuguseila2552]

You should really make a video detailing that procedure

[@albanosilva378]

Thanks. I´m learning thanks to you.

[@randyr.parker2698]

You released the 'Magic Smoke' Sorin! LMAO!!!!!! That was GREAT!

[@halifaxlithos2488]

Good for you on giving up sugar and junk food. I want you to live a long time!! Thank you for all you do.

[@fareselamine8115]

Commenting in @2:31 before finishing the video: First off, I'm glad that you're trying to lead a healthier lifestyle! Hope you're still being super conscious about the amount of sugar you intake daily. On another note, I think it would be more professional to actually include the name of whoever's channel it is that you are including in your video for others to see :) Nothing but respect and admiration to you though, Sorin. Thank you for re-igniting my desire to work on hardware repairs!

[@dodzdagondon3231]

Thank you so much for your video Master Idol.

[@Radek__]

26:33 nice smoke :)

[@peterking299]

Many years ago I used repair the B&O Avant floor standing tv, on more than one occasion I would find mice living inside and causing all sorts of problems.

[@johannesdesloper8434]

I watch your video's a lot..good entertainment and cool to see how repairing electronincs is less complicated than at first sight. You were talking about good food and health. I'm pretty convinced a good excersize each day is quite important also.. an hour cycling a day will do a lot. And I think it's about time you get a good fused work 220V connection on your desk you can short without blowing the fuses of your shop :)

[@professoringles985]

once i got some termites inside a notebook, shorted some components, but also ate the bridge chip, bought a new board for the client, to many things damaged!

[@euphoria_7477]

That fix was crazy. It was insane! But really tho, decent work Sorin.

[@VincentTubed]

Really great you are chosing a good diet! I recommend keeping carbs low in general. I skip breakfast since months and feel great! plan my carbs a bit with training. That's my other recommendation: make sure to work out at least twice a week - you will feel great. Thanks for all the videos, I learned a lot, hope you will live long and happy :)! cheers

[@ginopumadera4265]

Great work !!! Please be careful, use protective glasses

[@RolandW_DIYEnergyandMore]

You are a master of improvisation! ... Right at the beginning of the video I was wondering, if the outside fuse blows but the inside one does not while all after looks mint, there is only one thing in between... check the socket :)

[@trlababalan1586]

Obviously it was too hard to figure out for Sorin lol.

[@RetroClaire]

Brown to green, green to blue, and blue to bits 💥

[@abr.a9632]

After you checked All electronic communications that was fine ,From my own personal experience, I immediately guessed that there was a problem with the power socket.

[@chatrkat]

I used to get small amplifiers from restaurants and bars with a similar failure from bugs. Yuck some were so bad they got scraped.

[@SidneyCritic]

I picked that one - lol -. When there was no short on the PCB, I figured it had to be between the lead and the PCB.

[@tanishqbhaiji103]

I love power supplies

[@FixTronics]

I hate power supplies 😓😅

[@metalacos]

Sorin if you want to easy open laptop charger use car petrol from gas station, just put some on the joint and couple minutes later it can be opened by hand.

[@ElectronPcRepair]

Hello Sorin Greetings from Addis ababa,

[@POPRAVIPOKVARENO9596]

Nice work👍👍

[@ja.935g67]

Thumbs up to a healthy lifestyle! Happy for you!

[@xavytex]

In hindsight it’s obvious why the internal fuse never blew. We often jump to conclusions and don’t have the discipline to think rationally. But it will happen again, that’s just how the human brain works ! A good book on the topic is that of Daniel Kahneman - Thinking. Fast, and slow. "It is the consistency of the information that matters for a good story, not its completeness. Indeed, you will often find that knowing little makes it easier to fit everything you know into a coherent pattern." Thanks for the videos Sorin !

[@jasonledrew7677]

OMG You had me dying laughing here. Your reaction was amazing when you saw the smoke coming... Thank u Sorin!

[@ChrisPavlides]

WE love you mate, love what your doing in the way your doing it. I even love that you are "russian", i love russian people. Im watching EVERY video of yours. Greetings from Greece!

[@silviuguseila2552]

Dude, he's not russian. Where did you get that idea? He is Romanian

[@opal177]

LMAO Do as I say, not as I do. You are so great, Sorin. Love you.

[@glazyrap9244]

sorin is an expert, but im wondering how he didnt knew untill now that brown is live?Maybe he forgot....I cant accept that he didnt saw untill now that... Anyway is a pleasure and satisfying thing to watch sorin's videos.

[@worroSfOretsevraH]

I am truly shocked that you wasted your time with that port, instead of just soldering the cable directly.

[@ElektroTechNL]

Just solder the wire on the board and done.

[@intrax2tv]

You forgot the hot glue ! 😁

[@ethiotechstuff9445]

use variac (variable transformer) to inject AC voltage slowly

[@anglosaxon1622]

Agreed, because nobody knows the exact voltage to get a nice sear on a grilled cockroach.

[@Ghost572]

Sorin likes the smell of that magic smoke, it's very good.

[@repairfreak]

That must have really stunk when you cooked that bug! Once I absolutely could not find a short that was blowing fuse. I put in a larger fuse and watched for a pop or pillar of smoke. This led me directly to a shorted transistor. Luckily the board wasn’t damaged in the process. Replaced the transistor, put back in the proper fuse, problem solved. I highly DO NOT recommend this troubleshooting method, for it could create unrepairable board damage, eyeball damage, or even catch your place on fire! I now use a variable voltage ac transformer 0-130V ac “in America” and use a 500W photoflood bulb in series with my hot wire wire on my power cord using a flange base bulb socket and a junction box wired up with with a male plug on one end, and a female ac receptacle on the out side of the bulb which I plug my device under test into. Only the hot wire travels through the incandescent bulb filament, the white common and ground just goes around the bulb without any connection. The bulb filament on the hot in series acts just like an inline fuse to lower the current if there is a short in the circuit. The brighter the bulb, the more direct of a short in the device under test. I can test pretty large amps with a 500w bulb, if no short it passed enough current/voltage to actually let the device under test operate normally if the bulb isn’t glowing.

[@johnathanasiou9284]

Properly Calibrated Cockroach expertly despatched by our master, Sorin!

[@jeffscott2528]

You remember they used to call troubleshooting "DEBUGGING" right?

[@emailfilters]

34:30 - I'd put it in a bench vise to pop apart the two halves of a power brick using a flat screw driver as extra persuasion.

[@cutemartinj]

You fixed the bug

[@Radek__]

28:18 the cockroach tough life :D

[@DanielsGameVault]

Yup - I ran into that chassis and watched that exact video you showed :)) I actually broke the bezel in one place because I didn't know how I should do it, but thankfully the screen survived....WTF Samsung ??? :|

[@charlesmawale9114]

Sir can you teach us more about smps that have smd components below the smps board, thank you

[@johnbos4637]

I had a similar problem. A friend gave me a 55" 4K LG TV, had a blown fuse. I removed the power board and underneath on the TV back was a black mess, strange pieces of something unknown. I checked the board and no fault found. I replaced the fuse and it worked. The blown black mess was the remains of a lizard that crawled into the AC socket and fried itself hehe!

[@zx8401ztv]

Sorin, a very good choice to remove the rubbish food, it was a worry watching you in the garden having problems breathing. :-( And the t.v set, i have never seen a socket do that before, madness lol. The plug looks non polarised, so it does not matter the way it goes in. Mains goes through the bridge rectifier anyway, so it does not matter at all. I have never seen a cockroach in the uk, maybe the set was made in malaysia?.

[@ootyguy9805]

Sorin typically tells what the part was blown from the smell of it, this time he was clueless because it was a new smell :) next time he will say "that smells like a cockroach!"

[@Sidman723]

I was just about to mention the "series 100W incandescent lamp to indicate a shorted device" trick, but CambridgeMart beat me to it. It's an old technician's trick.

[@balik.electroservice]

Always learn this canel

[@loizostheochari1509]

Is it possible to use isolation tester to test the coil of the transformer for shorts.

[@ljubomirculibrk4097]

Its high frequency transformer, not 220V. It not eficient at 50/60Hz. There are testers for this type of transformers

[@XantheFIN]

You have yet build Sorin long cable with switch at other end so you are far away from boom radius? :)

[@matrixclone1403]

After blowing two of your power cords but not blowing the board fuse you didn't think it could be the mains socket, that's about the only thing it could be! :) :) :)

[@jeffscott2528]

I have a 65 inch LG hanging on the wall for 2yrs. Then one day the thing jsut stops working. After seeing this I say to myself eureka! I bet one of the inputs shorted out due to the bent wires against the wall. The thing is so heavy I have not pulled it off the wall because I am old now and it is heavy. So I guess I have to pull it off the wall. LOL

[@loizostheochari1509]

Why not use a variac power transformer to tested it with.

[@randomkitty2555]

Sucks for that bug. Not only did it get smooshed but it also got electrified til it fried. But yeah, the design for that Samsung tv is not good but if it was intended to be sold for cheap then I suppose it ain't that bad.

[@ljubomirculibrk4097]

Had a HP printer whit bug colony in power suplly, nice and warm. Been a paradise for them, until one touched the mains mosfet and got waporised. Customer brought it to our service, it was a comedy when i got it opend.

[@mesterak]

Nothing like a little burned roach in the morning with your coffee 😂

[@anglosaxon1622]

No light bulb for testing? How about a good old neon ? Remember those, small compact and now almost obsolete because of LED's. Keep one in your tool kit, maybe.

[@paulcortes5725]

How about a short to the chassis of the TV. That would only show up when the board is installed. You mentioned that the mounting and board are flimsy. Maybe something is making contact only when the board is installed. (watching @ 20min now. Maybe that'll be what you find.)

[@williamdawson6351]

looks like a weller solder iron from the part you hold in your hands.

[@johnjackson3483]

so you debugged it?

[@akimhamlet5092]

A fly killed my water pump for the house lmao

[@smokey2750-c4z]

XAXAXAXX My microwave was killed by cockroaches.

[@wepipe]

heater wired in parallel not series - yes ??

[@flrazvan]

it's about the obsolescence program implemented by all manufacturers.

[@madubai5933]

Good morning

[@pteancuvasile5055]

Ar fi frumos sa mai vorbiti din cand in cand si Romaneste ,eu ca roman si poate alti cativa zeci sau sute va urmareste, asa cand sa poate :)

[@thehakbro]

Would the color of the cable connector cables matter? Isn't it ac power? Just asking because you can plug the cable any way you want on the tv connector and also to the wall outlet and it still will work

[@chainbreaker]

yeah, stoopid design. it should not be like that for safety reasons. works anyway tho

[@cambridgemart2075]

No, because the 2 pin connector is only permitted on double-insulated equipment with no earth (ground) connection required.

[@chainbreaker]

@@cambridgemart2075 correct me if i'm wrong but I don't think is the same to put a fuse on the live or on the neutral

[@cambridgemart2075]

@@chainbreaker When there is no earth / ground reference, it doesn't matter which line is fused. The only difference between live /hot and neutral is that neutral is near ground / earth potential.

[@AnonymousRepair]

I hate cockroach infestation. It always comes back after 3 months

[@blg53]

So the cockroach acted as a external fuse protecting the TV from ANYTHING that might come from outside... Seriously though, how did it get there as the cable is always plugged into that socket. Did it get there in the factory or during the transit?

[@waleed9128]

Use a current limiter ( 100 watt)

[@raduradu1289]

27:01 magic smoke ;)

[@johndahl6651]

Good job sorin...but you need 1 dremel that littel machine is very good to small work in plast..but you know self..