I have a strange power issue with my 37PF7320A/37B LCD tv. After plug in the tv, I can hear one click, the red led flashes once, the green led lights up for a couple of seconds, then another click and every thing goes dead. Press power button, nothing. A funny thing is if I turn off power (unplug) to the tv a second or two after the first click, the back light comes on for an instant. But if I turn off power to the tv a few second after the second click, no flash of back light. I already checked resister 3318 and it is fine. All caps on power board and AUX power/audio board look fine. I also measure AC at the main rectifier and it is 0V after the second click. Please help, thanks.
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Re: strange philips 37pf3720A/37B LCD power problem
Can anyone help? -
Re: strange philips 37pf3720A/37B LCD power problem
https://www.badcaps.net/forum/showthread.php?t=39740
Do you know the chassis numbers as printed on the model sticker?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: strange philips 37pf3720A/37B LCD power problem
Here are pictures of my tv. The chassis is BL2.3U AAAttached FilesComment
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I have an LG Plasma TV 60PM6700 for the past ~12 years.
In the last ~3-4 months I have been having some issues.- Problem: It started with random picture disappearing (sound still worked).
Frequency: Happened about once a week.
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Frequency: Happened about once a week.
Solution: Had to turn off TV wait about 10-20 seconds and turn it on again to solve. - Problem: TV shuts down
- Problem: It started with random picture disappearing (sound still worked).
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