Question about Televison & Video
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Posted on Jan 02, 2017
SOURCE: Philips Magnavox 37" LCD Flat
Disconnect the LVDS Cable that runs from the small signal board to the display panel and apply power,if the screen comes on,the Small signal board (aka Scaler Bd ) is the faulty board. other than that,all that's really left that has gone bad for me is the logic board.
Posted on Jul 07, 2009
I had a similar problem like yours with a different TV. I had to find the Service Manual for the TV to really find the problem. The manual gives me every schematic and parts number list for every board in the TV.
It turned out to be a bad Inverter Transformer. It was one of six that powered the LCD screen. You might have the same problem.
The Service Manual on the internet for most TVs are under $20. It's the best material for diagnosing the problem. It worked for me.
Posted on Jul 15, 2009
SOURCE: Picture keeps blacking out.
No way to test the caps, now that is funny!
Bad caps can look normal but can have high ESR.
If the output voltages of the supply checked normal with out high AC ripples, than more likely to be other problem some where else.
Posted on Dec 01, 2010
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