LG LED TV goes black after few seconds. no video no sound

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LG LED TV goes black after few seconds. no video no sound

Postposted on Sat May 17, 2014 5:08 pm

LG LED TV turns on but after a minute or so, the pictures and sound both go away. I opened the TV and the back light and sound turns off after some time. Is it the power supply?
rbindra
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Re: LG LED TV goes black after few seconds. no video no soun

Postposted on Sat May 17, 2014 5:17 pm

Does the power light flash in a weird series of blinks that could indicate a failure code.

Most newer TV's use the power light to display a trouble code to let you know hat component needs to be replaced.

Good luck.
EDIT: you might have to unplug the power cord to TV wait 10 seconds then replug it in and try turning it on again to possibly get a code from it.
Also google you TV model and problem....you just might find a answer there.
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vargis14
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Re: LG LED TV goes black after few seconds. no video no soun

Postposted on Sat May 17, 2014 5:20 pm

If I power it off and then power on, it works just fine for a minute or so. It powers on normal.
rbindra
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Re: LG LED TV goes black after few seconds. no video no soun

Postposted on Sun May 18, 2014 11:39 am

Well I googled it and there are many mentions of power supply problems.
Thoroughly inspect the power supply for bulging capacitors etc.

Without looking at it myself this is about all the info I can give you.
If it does have bulging capacitors or some other problem with the PSU it might be on its own board that you may be able to purchase a replacement power board. But if the price of the board is half as much as the TV you might as well buy a new TV.
2600k HT on@4705mhz 8gb Cas9 1600 mem 2x EVGA GTX770 4gb Classified cards in SLI @1320 mhz core and 2003 mhz mem,mounted in CM HAF922 with a TX-850 PSU 2xHTPC's 2xi3 2120 3.3ghz dual core,1xasus LP HD6570 1xHIS hd7750@1150core1325mem,55"PanyVT30
vargis14
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