Question about Philips 42PFL7422D 42 in. LCD TV

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My Phillips 42PFL7422D/37 power starts but then shuts down before the screen comes on; you can hear the relays click on and the little blue 'on' LED on the front comes on for about 20 seconds and then all power shuts off.

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Go to your manual to see if there is a timer setting for shutoff.

Posted on Oct 16, 2010

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I HAVE A 42 INCH PHILIPS MODEL 42PFL7422D/37 TV.

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THE IC CHIP WAS BLOWN - SEE PICTURE. THERE IS A BURNED, DARK BROWN MARK ON ONE OF THE CONTACT LEADS ON THE CHIP.

THERE ARE $20 FIX IT KITS THAT YOU CAN BUY ON EBAY TO REPLACE THIS TINY LITTLE CHIP BUT IT'S RECOMMENDED THAT YOU SOLDER VERY CAREFULLY. I TRIED, AND DAMAGED THE BOARD SO I BOUGHT A USED ONE.

REMOVING THE IC CHIP IS PROBABLY BEST DONE WITH A HOT AIR SOLDER GUN. THEY COST ABOUT 50-200 DOLLARS.

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42PF5321D/37


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42PF9956/37 SHUTSDOWN...


Ok. I got my tv back on.
I pulled off the back cover and found the relay that was clicking.
I have two blue relays next to each other that click when the power is pushed.
I placed a hair dryer over the relays for about a minute.
Once heated up, it only took 4 tries to get the TV to stay on.

Jan 03, 2008 | Philips 42PF9956 42 in. HD-Ready Plasma...

1 Answer

42pf9956/37 philps plasma


I don't know why but this got my TV on.
I took off the back cover and found the source of the clicking.
Two blue plastic rectangular relays in the exact middle.
When I pushed the power button, I felt the top relay click, and I saw a flash from the bottom one. (they are right next to each other)
I took a hair dryer and placed it over the two relays for about 1 minute and tried the power.
It clicked only 4 times and then came on!!!!!!!!!
For some reason heat helps the relay.
If anyone is a tech and can explain this, please do.
Good luck!!!!
My tv is on and it didn't cost me anything.
I just can't turn it off now!!!

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