My sharp aquos quattron 52" will not turn on but keeps flashing the power light on and off. Please help me fix this problem.

Raptors

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Aug 2, 2015
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My sharp aquos quattron 52" will not turn on but the power light on the TV keeps on flashing on and off. How do I fix this problem. Please help!
 

Senatov

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Jun 8, 2013
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Try unplugging it for 10 minutes and then plugging it back in. I had this problem a few years ago with a Toshiba. The power supply was bad. Usually in instances when it won't turn on but lights blink, it's either the psu or something inside is faulty.
 

rhysdmarks

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Dec 28, 2017
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This is by no means a cure all, but a solution that I've had luck with in the past. (Disclaimer: Doing this risks permanently damaging a board, I only use this as a last resort if I'm going to replace a board anyway).

On two different TVs I've fixed them by baking the faulty board in my oven @ 350F for 15 min.
The heat "reflows" the solder connections and can potebtially revive dead boards.

The first TV was a LG 42LK550. Had problems with the main board, TV would work for 5 min and shut off. Baked the board and it worked fine ( I used it another 6 months and sold it) .

The second was a Sharp LC-32D62U no picture no sound with a OPC/Power, Power, Power blink code. Testing pointed to a bad main board. Baked the board and TV is going strong again.

Each time I removed the boards, and disassembled them as much as possible, removing as much rubber and plastic as possible while leaving the board intact. I then placed them on a cookie sheet and baked them.

Again I ONLY use it in situations where I would replace the board anyway. But at that point what have you got to loose.