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How do I fix dark screen but can faintly see picture when I hold light

I have LG 47LN5200-UB, has been working fine but two nights ago went to turn it on and screen is black. I can see a Faint picture if I hold a flash light up to the screen.

I have tried unplugging it, holding the power button for 10 seconds and plugging it back in. I tried switching picture settings to vivid. But did not help. Sound works fine.

What else can I try.

Rispondi a questa domanda Anch'io ho questo problema

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Commenti:

Also when I power on the TV, a light flashes across the screen then goes black. With just a really faint tint of picture or menu on the screen. Can only be seen when you're holding a flash light up to the screen. Sound works perfectly to what ever input you select.

da

I can’t see picture what do I do to fix it

da

Mine started backlight problems, I don't know if this is only happens to LG digital set. Please how can I fix.

da

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4 Risposte

Risposta Più Utile

It will be a tcon or backlight issue, Look for someone local to you to repair it or if you feel you have the confidence do it yourself with some help from us.

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Punteggio 9

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It is backlight mine did same thing

da

I would put money on the backlight being gone. The flashing light on startup makes me think the transfomer. I would look to start with replacing that first.

da

I took the back off TV and powered it on, the back lights flash on then go out. I will look for pricing on transformer.

da

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If you let it warm up a bit then the picture will eventually turn out clear.

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It may work. I had a similar problem, but not the exact one

da

I have the same problem I think just letting it warm.up a bit might work though

da

katie humble most likely not but let us know how it works out for you. This is a backlight issue and will not resolved by waiting for it to warm up

da

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I don't know if this is the reason but I suffer from the same problem but I believe that the TV isn't getting enough power from the cable you plug into the outlet

I Feel That's The Problem

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ok so… there is a kill switch relay on the powerboard,almost the first component in the circuit. it will look like a small black or /blue , somtimes yellow rectangular box. it wiill have 6-8 pins soldering it too board.

almost every time. i fix a tv that does it. of coarse. whatever diode down the line burned out allow and is allowing high volt spikes when relays flip. is still burned out thus thee relay coil will also burn out eventually. unless u add a high efficent diode between switch outlet and and un switched oulet pole. poles ——->--arrow facing toward switched. this will atlt least protect from the “main” high voltage spike.

they do make relays with diode built in. but i like to build my own relays. so they work forever….. also use a heatsink between solder connection and diode or u will pop it. (make it not have direction). well love,hugs, and happy mucking.

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Sandy sarà eternamente grato.
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