Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
SOURCE: LG 42lc7d 42" lcd
Replace power supply and this should take care of all of you problems part number is EAY34797001.
Josh
SOURCE: Fujitsu 42" Plasma Display shuts off after 20 minutes
This is most likely caused by the Main Power pcb.
See Fujitsu Service Bulletin on this problem in a similar model from Fujitsu. -see link below
http://tomtom2k5.free.fr/fujitsu/PDP-0035-06.pdf
A competent service technician should be able to implement the service bulletin.
A similar service bulletin is probably available for your model.
Request bulletin from Fujitsu '[email protected]'
SOURCE: tv red blink no start42 plasma philips
Thank you for the help. I actually changed the whole main power supply board and it still did not fix the problem. When I put the new one in, I had the tv on for about 3 hours and then I shut it off. No sooner did I get it back up on the wall and the problem started all over again.When I pulled the original board, the caps all looked fine so I am not even sure the board is bad. Problem is there is no one around me to test it. I am not going back to the same shop that already told me that it was a bad main power supply board. Any other suggestions?
SOURCE: I have a Sanyo 42 inch T.V. and it suddenly shut
call to the tv service center and do the required things my dear..........
plz dont try to repair it without any experts becoz tv when switched off also contains many voltage in it...
SOURCE: Have a 42" Tv that won't power up. Power to
The electrolytic caps need change out on the power supply or you can purchase a new remote at www.partstore.com
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