The described may lead many to point to backlight inverters however it is extremely uncommon for backlight to work in a way that would produce "faint" light.
it is a whole lot more likely that backlight is functioning properly, but the display in front of it is all shut and not functioning, i.e. all light filters are closed and not opening.
This would point to either the T-CON board or the main board or, at worst, the LCD itself, which is however less likely.
May be something as simple as a bad connection of a cable on the LDVS cable - we've seen that happen once or twice.
We've also seen exactly that happen due to a problem on the main board, but the circumstances were such that it's hardly the same issue.
In any case , if you want the main board tested and possibly repaired you can use this:
http://www.coppelltvrepair.com/p/59/sanyo-dp52449-p52449-01-main-board-n7ke-repair-service
SOURCE: Sound No Picture Sanyo LCD WIDE Screen HDTV
Hello heck75,
I wrote this for another post but it applies here also:
This sounds like your inverter or back-light has gone out. What you can
do to test this is to turn the TV on and then turn off all of the
lights until the room is dark. Then shine a flashlight at an angle on
the screen and see if you can see a picture. If you can the back-light
and or inverter has malfunctioned. If this is the case, then I would
suggest that you have a qualified TV technician fix this problem, but
first ask for a estimate because the inverters and back-lights are
sometimes part of the screen and is it is you might as well buy a new
TV.
If the inverter is a separate board, If you have a background in electronics you might be able to repair the board, however if you do not have a background in electronics, again I would suggest getting a qualified TV technician to work on your set.
I hope this helps,
Thank you,
Shuttle83
Electron-Age Technologies LLC
www.electron-age-technologies-llc.com
SOURCE: Bright white screen with faint images
If lighting did strike, you would be suffering power supply problems, due to a power surge from the strike.
The problem sounds like it could be related to the LCD panel becoming faulty or if your able to test inside the unit with a multimeter, you can measure the voltages from the printed circuit boards, especisly those suppling power to the LCD panel as well as the Logic PCB, A small printed circuit board you will find either attatched to the LCD panel. I hope this helps.
Good luck.
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