Found the same tv in the trash, exact same capacitor trouble ,was able to fix it for less than £3. I have never soldered anything in my life but found it quite easy.Thanks for the inspiration. Subscribed i have watched many of your uploads,always informative.
That is "Evo-Stick" petroleum-based glue. When it gets hot it turns brown and exudes acid. It's the first thing I look for after bulging capacitors. BTW you WILL fit a proper ceramic safety fuse, won't you? I mean three strands of wire are OK for testing on your knees to see if it blows your balls off but please return it to customer in a safe condition.
I like your videos that you are a genuine tech/engineer. You do not pretend to be perfect. You just set in and old capacitor in......also solder a bulb in instead of a fuse. Hooray 👏👏👏🎆👏🎆👏👏🎆👏🎆👏👏👏👏🎆👏🎆
Would have been good if you explained more as you went along, like which settings your meter was on, what you were looking/listening for when testing the rectifiers, few times there you were thinking about something but never explained anything. Otherwise good to see something fixed even though I didn't learn anything.
Hi great informative video. I have a vestal power supply voltages jumping up and down. I notice on the hot side the screws are isolated but have ceramic caps across the isolation I thought ac passed across caps. If cap was shorted could this cause voltage variation, many thanks.
Hi Sorin, I have a similar problem with a Toshiba 40L1333DB with a Vestel 17IPS20 power board. I have checked everything i could but still nothing. It does a rattling noise when plugged in, like a ongoing short circuit . Please help me ! Thank you
hi its the glue they used when it gets old and brown it gets conductive hence burnt capacitor etc it shorts everything out in time clean off old glue then its plain sailing from there
Isn't it dangerous to replace a fuse with wires? What if there was a short circuit on the output? You will also risk the life of other working components. Am I missing something here?
hi i have same problem with my tv, you replaced the blue colored item but you scraped off, and did not replace the two silver wires next it, im confused don't they do anything ?
Great video, but is dangerous to hold TV on your knees, especially when you are not sure if PSU will not blow up,straight in your face... :) Anyway, greetings :)
So, why is it not necessary to use the same type of cap, and why is it not necessary to replace the burned out jumpers right next to it? I didn't see him replace those.
i like your style of repairing...just one question,,do you even care about the value of that ceramic capacitor...or you just put another value for replacement....thanks..nice video
i have a dead samsung tv with a bn44-00482a psu...i have two of the psus...both same issue..the voltage drops and i can hear a small ticking sound!...the icm801 was blown away and i replace it but still the issue..i cant find the problem and there is no short on the power rails. coming with the low ticking noise the voltage drops! go high and down...seems like some components cut the voltage every few seconds! what should i check?
Could someone please explain how he used the first capacitor found on a spare board, without mentioning or checking its value? I am trying to improve my knowledge, and would really hesitate to just solder in any old part without being sure it's a match.
Hello my board is an bn44-00213a and it has been burned in the section where the CM810 the blue ceramic capacitor is located. So my question is what type of capacitor is that to replace it. Thank you all
Hello, Can the Samsung Exlink port be used to reset my TV? The reason I ask is because my remote stopped working so I changed the batteries (installed them correctly), tried a brand new Samsung remote still not working. I tested the remote by shining it into my cell phone camera and it is blinking red. the IR light on the TV is lit. I then did a stupid thing by accident- when I was trying to use the jog switch to reset the TV, I locked the TV parental locks, so now my TV is set to one channel and I have no control to adjust volume, on/off, etc. I am out of work right now and trying to fix this myself. TV is only 3.5 years old model number UN50H5203AFXZA MHO1. I tried a hard reset by unplugging and draining power to both the TV and the remote. Now I wonder how I can reset the TV and to unlock it by using the EXlink port on the back of the TV. Any help is appreciated. Thanks, ChristineHi Matt, Can the Samsung Exlink port be used to reset my TV? The reason I ask is because my remote stopped working so I changed the batteries (installed them correctly), tried a brand new Samsung remote still not working. I tested the remote by shining it into my cell phone camera and it is blinking red. the IR light on the TV is lit. I then did a stupid thing by accident- when I was trying to use the jog switch to reset the TV, I locked the TV parental locks, so now my TV is set to one channel and I have no control to adjust volume, on/off, etc. I am out of work right now and trying to fix this myself. TV is only 3.5 years old model number UN50H5203AFXZA MHO1. I tried a hard reset by unplugging and draining power to both the TV and the remote. Now I wonder how I can reset the TV and to unlock it by using the EXlink port on the back of the TV. Any help is appreciated. Thanks, Christine
So you are using old used parts out of other sets to do your repairs? Why don't you keep a stock of new electrolytic and ceramics around they are not that expensive?. A specialty part like a coil or a heat sink sure I can see taking off an older used unit. Those caps can dry out after a long period of time so if you don't know how long those parts have been sitting it could fail again.
i have a generic question any idea on how to diagnose the main logic board on these tvs. problem is i cant find the MLB to just replace it and there is no schematics for the tv that i can find. the tv gets power but no image i have like 10 to replace for a college but i could only find 3 logic boards, any help would be awesome
He used a couple of strands of fine gauge wire, which DOES create a fusible link, though it may or may not protect as many downstream components from over current damage, it very likely is enough to keep the P/S from catching fire in a short circuit condition. Maybe fuses are not cheap and readily available where he is, but, you're right, it seems like a rather sketchy and unnecessary modification of the original design, anywhere fuses are cheap and readily accessible. I doubt that 6 amp fuse was OEM... Probably an attempt by the last person who opened it, to see if just replacing the fuse with what they had on hand, would make it work again.
The original safety fuse wire was in a ceramic tube for a good reason. It's not clever to replace it with even a glass fuse - never mind bare wires! In many countries you could be prosecuted. A fuse should ALWAYS be replaced with an identical fuse.
@@electronicsrepairschool a wire is not a fuse.... 2011FMconf.Fusingcurrent.pdf date: 1880 Preece devel-oped an empirical relationship for the fusing current of wires made from various metals: FUSING UNDER CONDITIONS OF SLOW HEATING difficult to measure a wire on a video :p let's say a diameter of 1/2 mm d for diameterin mm i=(ad)^(3/2) in A! current needed for fusion of the wire d=80 for copper => i=40A d=59.2 for aluminium=> i=20A i guess i don't need to show the formula for the fast fusion? your wire protect nothing it's the fuse on your electric panel who do the job of course i can be wrong ps i like your video ^^
sir LG LCD TV doesn't have a separate power board and everything is on the same logic board. My LG LCD Tv goes out while I am watching. I don't know what happened. it has no power and not powering on. tell me how to identify power problem of such boards.
how about repairing plasma 43 inch samsung capacitor blow 102/1kv located beside the power regulator ic in power supply/ inverter board and got replace the same parts but still not working what is possible reason for that issue..thank you.
sir how about the parts using in samsung LCD like you've just repair part number ICE3BR0665J and ICE2QR0665 is that the same function? what will happend if i replace 3BR to 2QR? thank you.
what i will do, i'l open the tv, i will get out the connectors from infrared receiver and tv keyboard/buttons and i will test again. If is still doing, i will replace the logic bord.
Well sometimes technical has lot experience but something has wron or poor tool like bench to small... May the technical like it or some like that... Keep or put on you mint THE MONEY YOU CHARGE FOR NETX TV REPAIR YOU PROMISE IS TO BUY NEW TABKE WORK... 😁😁😁😁
I have Lucky guy...when connect to lcd power cable zero reaction...when connect hdmi cable from laptop lcd show menu screen! Haha this is crazy ^^ i change for blackberry 9320 :) my Lucky Day. Monitor is very good. Hdmi input...dvi input...VGA input...speakers...^^
Did check the regulators and mosfets on supply line rails check the optocoupler, and check diodes, check for open resistors and filter capacitos check on primary side because you missing secondary outputbvoltages check chopper, and the transformer also
Thanks. What does it mean when you test a bad Schottky diode in circuit, but diode test good out of circuit? Please keep doing more TV repair videos. I would like to test boards plugged in like you do, but too afraid I might touch board accidentally.
Thanks for reply. I wish I would have less of a challenge circuit boards problems, l.e. obvious popped caps, 1 bad diode, or resistor. Please let me know when you have a broad with a diode testing good out, and what surrounding components causing problem.
Well it seems you are very efficient in what you do, but the way you try to "teach" in your "school" is not. I try to follow but your lack of simple explanation make it difficult for someone trying to learn the basics. Waoooo!!!! this is the second video I see where you put AN OLD PART on something you are fixing. Do you charge full amount or give a discount because of this used parts? Are capacitors THAT EXPENSIVE that you can afford to put NEW ONES?
Can a "pinhole" in a resistor be the cause of my TV turning on / off and not staying "on" ? (Red light, stand-by mode, I guess) Model : Panasonic TC-L50EM5 BOARD : TNP4G532 Resistor : R7305
Sorry to thumbs down this one but no way should you replace a 6.3A 110v or 230v fuse with a piece of wire. A fuse costs next to nothing. That set could burn down someones home. I don't doubt your knowledge or capability, just your ethics on this one. A piece of wire that size may well blow at 6 amps, but it can also stay connected and excessive current could easily start a fire. Fuses are designed to open and stay open without flashing or welding together.
ur a repair man with all these expensive equipment yet you use a jumper wire for a fuse... even to test equipment you never use jumper wire to check .... from one thech to another thech invest on fuses ... you are causing a bad example on repair instruction.... as a experince thech i would have fail you big time... Never Never Never Never use jumper wires for fuse even if you just gonna check equipment... dats a desaster wating to happen
If he selects the right gauge of wire (very thin, in this case) he creates a fusible link that is sensitive enough to keep the power supply from catching fire if another short circuit occurs. Manufactured fuses are cheap though, and a person who does a lot of electronics repair should have them around... I suspect that 6.3 amp fuse was not the original, (tried by last person who opened it with what fuse they had on hand) as that would be a LOT of watts for an LCD display. Most I've seen are around 150-200 watts, which could be protected with a 2 amp fuse on 240 mains, or a 4 amp fuse on 120v mains.
thats right as long as the same size of wire and not too big and easy to blow theres nothing wrong with that it is pratical to use.. and if the power supply got fix you can replace the original fuse...
