Toshiba 40" LCD TV has bands each side where picture is brighter

The T-con board controls the picture elements on the screen. Usually replacing this board will solve the problem. If you can touch the screen and the lines disappear and later reappear, that says the screen itself is defective. The only fix is to replace the entire screen.

Hi.

This website has the service manual ($7.79) with instructions to diagnose the boards. Unfortunately I am afraid that the problem is not a board but the panel itself.

Thin vertical lines in the middle of the picture mean that the panel is gone. Here an example of lines from bad panel in Toshiba LCD:Line Picture. (discussion: Avsforum). Sometimes the lines can be dark or in bright color.

The panel costs $339 (LCD PANEL ASSY).

Because of the price of the panel, the TV is not worth repairing unless under warranty.

Even if the TV is out of warranty call Toshiba and report the problem. As you can see in AVSforum page above the problem is affecting many users.

If Toshiba doesn't offer special conditions on repair (or discount on new), the TV is not worth repairing. Replacement of the digital board will hardly be a solution.

Only if you have wide bands, scrambled or flickering, then the problem is digital board (main board) or panel.If you have the thin pixel lines, then the panel is gone.

My 3-year old 52-inch Toshiba flat panel TV (Model # 52RV53U, Serial # AM409000295) developed a display issue (purchased Aug. 2008, manufactured July 2008). Vertical multicolored lines appeared on the screen just left of center. The band of thin vertical bars is 5.5 inches wide. The lines are about 1/16-inch wide. They are stationary, always exactly in same place. They over-ride any other picture on the screen (no transparency). They are there all time even with no video inputs to the TV after the unit is turned on. See picture #1. The TV works well in every other respect, but, obviously, it is annoying to watch the picture with the color band blocking about 1/6 of the picture.

Further info, pics, comments, and updates on my Facebook page at

http://on.fb.me/mVwhVN

I already swapped out the TCON board with no improvement and replugged the TCON board cables with no improvement.

Most likely it is the flat panel tab bond failure (panel made by Samsung). Further updates will be on my Facebook page.

It can be T-CON board, ribbon cables between the T-CON board and the LCD panel.
Learn about T-CON board failure here: Please download and look at the sample of bad pictures:

http://www.scribd.com/doc/25276757/E40951307-TCON-Troubleshooting-10-22-09-OPT
http://www.mediafire.com/?zzjygannjty PDF download

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

My 3-year old 52-inch Toshiba flat panel TV (Model # 52RV53U, Serial # AM409000295) developed a display problem (purchased Aug. 2008, manufactured July 2008). Vertical multicolored lines appeared on the screen just left of center. The band of thin vertical bars is 5.5 inches wide. The lines are about 1/16-inch wide. They are stationary, always exactly in same place. They over-ride any other picture on the screen (no transparency). They are there all time even with no video inputs to the TV after the unit is turned on. See picture #1. The TV works well in every other respect, but, obviously, it is annoying to watch the picture with the color band blocking about 1/6 of the picture.

Further info, pics, comments, and updates on my Facebook page at

http://on.fb.me/mVwhVN

I already swapped out the TCON board with no improvement and replugged the TCON board cables with no improvement.

Most likely it is the flat panel tab bond failure (panel made by Samsung). Further solution updates will be on my Facebook page.

hi:
this problem may be due to a faulty T-Con board, replace the board and the issue should be resolved.

Toggle through the "Picture Format" settings from your tv remote.

Flip through cinema mode, too standard....etc

needs a DM Board, prity easy to change yourself, if you order one, make sure you give them the version number off the Right side of the TV, will be somthing like SP01, To change - when you take the back off the tv, it will be on the left hand side, have to unplug 3 or 4 connectors, then take the plastic covering off, and it will slide out.

it is going to need to be tested to find the component that is causing the problem

i experienced a tainted vertical black lines on the boths sides of my lcd screen. There was no scratch or whatsoever that could be the reason why thsi balck colored vertical lines to spread. Hope you can help me solve this problem. Thank you..