I have a Toshiba 40RF350U I got from my recycler for the light section. On pluging it in it had a nice 1/2 picture with the other half vertical band of vine stripes to the left. With slight pressure o

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Throw it away to any waste bin.

1) you have problem with the Raster
2) the main causes are a) raster b) picture c) sound d) synch
3) since this are not video, the problem is raster. your must
test the voltage from section horizontal out +125vdc+vertical output +80v+all other circuit +12vdc
4) test the power supply for defective. see the diagram attached

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.

hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me.. hi! this is shiharan.i am repairing a philips20PT,crt type tv.the problem is that only the lower half(vertical) portion of the picture tube lights up to display pictures.after taking off the back cover i am not been able to locate the horizontal,vertical driver IC.Perhaps the driver section is built arround FET.Please help me..

I have fixed the issue on my Toshiba 40" Flat panel. There are several ribbon cables that run across the top of the FPD module. It took a short while to disassemble the entire assembly. The fix I employed was to secure the ribbon cable using black electrical tape. Unfortunately the reassemble revealed an isse where the frame for the FPD module reintroduced the issue. I merely wedged the frame and the assembly and that resolved the issue entirely. I neglected to totally resolder the connections so not to damage any of the other ribbon cables for the display. Note these ribbon cables get very hot to the touch.

I have video's and pictures on request.
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left or rt side

this is a problem is your scan section either letf or right scan boards are bad. if its under warranty take it back if not it needs to be serviced. you can probably do it yourself.

No. The optical engine is OK. You need an adjustment in the light tunel. Call a tech to do it.

you could do three of these change flyback change yoke change cap that couple the horizontal transistor.good luck