Hello, I have a HP cptoh-0603 plasma TV that I want to try to repair. When you plug the TV in, it turns on normally, there is picture, but after about 5 minutes the screen flickers for about 1 second and then goes blank. The power button LED still shows the TV as being powered on. Once the screen goes out, the only way to get the picture back is to unplug the TV for 10 seconds, and plug it back in.
With the room's lights off, and blue screen mode turned off to see the static on ch3, before the picture goes out, the screen gets very white for 1.5s. After the white stops, I am able to see a few very dim flickering white pixels similar to the ch3 static. Powering the TV on or off without pulling the plug makes those dim pixels/static brighter for an instant.
Here are my voltage measurements on the boards:
VSworking: 197.7 VSblank: 87
VAworking: 60.9 VAblank: 60.8
VSCworking: 199 VSCblank: 199
-VYworking: 199.7 -VYblank: 199.6
VZBworking: 95 VZBblank: 78
So once VS stops giving out 197V, the picture disappears on the TV.
Any ideas on how I can find out what's wrong and fix this?
Thanks
With the room's lights off, and blue screen mode turned off to see the static on ch3, before the picture goes out, the screen gets very white for 1.5s. After the white stops, I am able to see a few very dim flickering white pixels similar to the ch3 static. Powering the TV on or off without pulling the plug makes those dim pixels/static brighter for an instant.
Here are my voltage measurements on the boards:
VSworking: 197.7 VSblank: 87
VAworking: 60.9 VAblank: 60.8
VSCworking: 199 VSCblank: 199
-VYworking: 199.7 -VYblank: 199.6
VZBworking: 95 VZBblank: 78
So once VS stops giving out 197V, the picture disappears on the TV.
Any ideas on how I can find out what's wrong and fix this?
Thanks
Facebook
Twitter
Instagram