SCEPTRE X322BV-HD POWER SUPPLY is Burning

[jerrytav]

My LCD didn't turn on and recently started burning inside. So I opened it up and and found out that a piece of the board was burnt off. Every time I turn the tv I could see the electrical current burning the board. How did this happen? and What should I do to get this fix?
Below is a picture of how it looks and how a new piece looks like.

[selldoor]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

You will need to take a close up picture of that area from the back of the board.
Repair will involve cutting out the burnt part and replacing it, probably with
epoxy and replacing any cut or burnt traces with wire.
There are very high voltages on this part of the board we have seen it before. Maybe when you rmove the board you can see underneath if it has been shorting on anything.

[selldoor]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

New Id seen it before -read this
https://www.badcaps.net/forum/showth...ighlight=Burnt

[jerrytav]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

You are correct selldoor I have the same exact problem.

[jerrytav]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

You are right! should I also cut out the burnt piece?

[budm]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Yes, once the PCB is carbonized, it will be just like a resistor and conducts especially when 2000V will be around that area, remove all the blackened board and use RTV Silicone to coat the board in that area, the main thing is to make sure to remove ALL the carbonized sections.

[selldoor]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Ok - well I think you have enough info there to fix it - if not- come back and ask
-let us know how you go on and post a pic of the repair.
Also while you are in there can you look at U3 and U4 and if you can read the part numbers post them for info in this thread or in the one I linked to.

[jerrytav]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Hey! I was able to apply the fixes and everything seem backs to normal! Thanks to you all. Hoping this is a permanent fix.

Hey selldoor saw that you need the U4 and U3. Excuse my ignorance, but dont know what part you mean. If you can point it out on a picture of mines than I would be more then happy to get the information you need. Not really a technician, Im a web developer lol but if you point out the piece I could get you that info.

[tom66]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

U3 and U4 are the 8 pin "bug"-like chips on the board -- can you read off the part #s? They are laser etched onto the devices. If not, can you take a clear photo of the numbers? Glad to hear it is fixed.

[multimeter]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Hey! I was able to apply the fixes and everything seem backs to normal! Thanks to you all. Hoping this is a permanent fix.

Hey selldoor saw that you need the U4 and U3. Excuse my ignorance, but dont know what part you mean. If you can point it out on a picture of mines than I would be more then happy to get the information you need. Not really a technician, Im a web developer lol but if you point out the piece I could get you that info.

u4 and u3 will be either a voltage regulator or another chip,just look for the legend next to any of the chips on the silk screen written in black,think selldoor wants the part numbers .

[selldoor]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Hey! I was able to apply the fixes and everything seem backs to normal! Thanks to you all. Hoping this is a permanent fix.

Hey selldoor saw that you need the U4 and U3. Excuse my ignorance, but dont know what part you mean. If you can point it out on a picture of mines than I would be more then happy to get the information you need. Not really a technician, Im a web developer lol but if you point out the piece I could get you that info.

Well done - good fix I attach a picture showing U3 & U4

[jerrytav]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Hope this is helpful!

On the U3: MEG003, 1BM, A45H
On the U4: AS358A, M E1, 144RE1

[tom66]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

This will prove very useful. Thanks! Enjoy your fixed TV.

[jerrytav]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Sure thing!

[feengerz]

Re: SCEPTRE X322BV-HD POWER SUPPLY is Burning

Same problem same solution. Thanks to this post I was able to have the tv back in working order in less than 30 mins. TYVM.