Toshiba 32C100U1 Half of the screen with lines

[poonym327]

I have this Toshiba 32" LCD TV with top half of the screen working normally whilst the lower half of the screen full of horizontal lines.

I re seated all the cables and checked the TAB on the panels, those lines are still there. Tried different input/sources had the same problem. Tried the hair dryer approach on the main board with no success.

Those vertical lines on the bottom right hand side of the screen for some reasons disappeared when the video was played.

Could this be the problem of the LCD panel or the main board ? There are only TABs from the T-CON board and not technically enough to understand why only the bottom half is in trouble and yet, the top half of the screen works perfectly OK ? Was it the signal generated from the mainboard caused the problem or the T-CON Board is the real cause of the problem ?

Anyone any suggestions before investing any parts or is it worth repairing ?

[tom66]

Re: Toshiba 32C100U1 Half of the screen with lines

To me, it looks like an LCD panel problem. Have you tried applying pressure to the tab bonds or just checked them for discolouring, etc.?

[poonym327]

Re: Toshiba 32C100U1 Half of the screen with lines

Hi Tom, thanks for the advice. I checked the tab bonds attached on the LCD panel again by applying pressure on the driver board side as well as on the panel side. Nothing has been changed ie no flickering of video images, no ghosting, no discoloring at all. I did this test whilst the video was playing ie the top half of the screen looks perfectly alright and the bottom half has those horizontal lines across the screen.

I ruled out the problem of the T-CON card and Tab bonds testing seems suggesting that the panel itself is working fine...I guess the main board will be a good guess for causing the horizontal lines problem ????

[tom66]

Re: Toshiba 32C100U1 Half of the screen with lines

No, the main board wouldn't cause this fault. The way main boards process video isn't suscepitble to these kinds of faults. At best this would be a T-con fault, but in my opinion the panel has failed (sorry!)

[poonym327]

Re: Toshiba 32C100U1 Half of the screen with lines

Thanks Tom. Got it and thanks for the advice. I guess it is not worth repairing if the panel has failed.