Re: Panasonic Plasma TC-P50S1 missing 7/8 of picture. - Fixed!

Thanks all. I was able to find an SU board at a local TV repair shop. This fixed the problem.

Re: Panasonic Plasma TC-P50S1 missing 7/8 of picture.

Excellent description, Thank-you. The -ve going row select on the first chip's test points look good, it is non-existent on subsequent test points. I guess that means I should go looking for an SU board....

Re: Panasonic Plasma TC-P50S1 missing 7/8 of picture.

Thanks for the suggestions. I re-seated the cables as suggested with no change.

The test points all down the SU and SD boards all have a similar signal trace on an oscilloscope. I've attached screenshots of the TPSC1 signal with a fully black screen and a white screen input into the HDMI input. The traces on the SD and SU boards all look similar to this, including the HV screw connectors.

Rick....

Does anyone have any suggestions on what to look at to narrow down the failed board or component of the above mentioned Panasonic plasma TV? I've attached a photograph of what is seen on the screen. Just a band across the top is working. The picture portion of what is shown looks fine. On screen menu etc. seems to look fine, at least what you can see of it. The rest of the screen is blank. Ignore the pixelization in the photo, it is just remnants of compressing the photograph.

There are no flashing diagnostic codes of the Power LED, and the green LEDs on the SC board (D16583) and...

Re: viewsonic vx2835wm no power

I had a slightly different issue with a friend's Viewsonic VX2835WM. It would just go tick...tick...tick. I advised him to buy a capacitor kit (I don't know where he got it from). He lost heart after replacing the two Caps on the video board thinking he was doing more damage than good. I replaced the others for him that were included in the kit from the power supply board. Only one of the caps removed tested bad, the 400V, 22uF. Putting it back togther, it worked ... sort of, but when it would go to powersave mode, the orange LED would start to flash...