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Why is my 42" Phillips LCD TV losing the picture about 1-2 seconds after turning it on? The blue power light at the bottom stay on even after the picture has gone away though.

I was told that the problem was with the backlight inverters so I bought replacements and installed them but this did not change anything. I have now been told that it could be the power supply board, or the main board... I'm willing to try replacing something else if someone is confident that they know what the true problem is. Model Number: 42PFL7422D/37

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Hi
Beware of doing anything to Philips brand TVs, without previous experience in service. This is the first thing I have to say to you.
Unlike other brand TVS, the Philips circuits are more complicated, and will be difficult to follow to a new-be. I think, you got me.
Please contact the authorized service center for Philips.
google.com/+GopakumarGopalan

Posted on Dec 06, 2016

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Posted on Jan 02, 2017

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Element elchs321----tv cuts off on its own. when tv is plugged up, the light at the bottom is red and you can hear a crackle, the light turns blue but no picture or sound. Help


I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors. That crackling sound is the capacitors burning out.
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3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

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Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
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Hope this helps

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1 Answer

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Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

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