06-23-2012 06:15 PM - edited 06-23-2012 06:15 PM
I have a Toshiba Regza 57LX177 from 2008.
It recently developed the following problem.
When I switch on the TV, the Right side of the screen is dark. Looking at Red Green Blue white and grey images, The blue is the most affected, and the separation between the normal left side and the dark right side is slightly slanted. See pictures at the link below.
After about 15mn, the right side lights up and everything is back to normal.
Doing some reading on the Web, it looks like to problem could be coming from one of 3 things
1) The backlight Inverter boards (this set has 4, one for each quadrant, and they are connected 2 by 2. 2 on the left, 2 on the right)
2) The backlight itself
3) The power board
If it is 1, it is an easy and affordable fix. $60 per board = $120 for the 2 right ones, easy to replace
If it is 3, it is a bit more expensive ($150 board) but also easy to fix
If it is 2, then it is prohibitive to fix and very complex.
Based on my symptoms, I am looking for expert advice on either how to diagnose further or opinion on what is more likely to be the culprit, so I can avoid buying parts for nothing.
Specific questions would be.
Given the side is not totally black, could it still be the backlight that is dying on the right side?
If it was the power board, would it come up when the set warms up, wouldn’t it be black on the right if there was no power getting to the right side boards?
Anything that can confirm or deny one of the sources for the problem.
Some people mention the Tcon board, is that a possibility in my case?
I would appreciate any advice and feedback on this. This is a Very Expensive piece of equipment to be dying after 4 years…
Solved! Go to Solution.
06-25-2012 10:56 AM
Unfortunately, that's beyond my scope of expertise. Hopefully someone in the community will have some additional advice. If not, it may be worth seeing how much a repair shop would charge you to take a look at it. It may be too high compared to how much it would cost you to take a guess, but it's probably worth checking how much they'd charge.
07-07-2012 04:17 PM - edited 07-07-2012 04:17 PM
Brought the TV to a certified Toshiba technician, and it turns out the boards are fine, it is the panel itself which is dying. bad news as the panel costs more than 5 new equivalent LED TV...
4 years for a $4000 dollar piece of equipment is not what I expected.
I guess my next HDTV will not be a Toshiba...