Odd to see a plasma with Vsync issues!
Got this one cheap as it's 37" 720p, was originally going to keep it for my bedroom but never got around to it... One of the smallest plasmas ever made, it's built like NASA engineered it because it's chock full of boards that manage to squeeze into such a small chassis. I count over 20 separate boards.
Issue is with the picture: it's OK when cold, but the colours are wrong... they're solarised. As it warms up, the picture begins violently shaking up and down in two halves. Then, once it reaches a critical point, about an hour later, the picture starts getting better (colours are perfect) but still shakes a little.
Accessing service menu is done by setting TREBLE to MIN, BASS to MAX in user menu, then pressing Index on the remote and VOL- on the TV. I selected test patterns and they're still distorted. Now I know most Panasonic plasmas do generate the test patterns on the D board but how to be sure? I pulled the LVDS from the D board, I get a little flicker from panel but the patterns stay up, and I can still cycle through them, I guess the control interface is on a separate cable. So, they must be generated by the D then, and since they're still distorted, it's probably a D board issue...
I'm going to check the supplies/regulators on the D board but if they all check out, I'll just swap the D board as it's available for £15 postage included from eBay.
Got this one cheap as it's 37" 720p, was originally going to keep it for my bedroom but never got around to it... One of the smallest plasmas ever made, it's built like NASA engineered it because it's chock full of boards that manage to squeeze into such a small chassis. I count over 20 separate boards.
Issue is with the picture: it's OK when cold, but the colours are wrong... they're solarised. As it warms up, the picture begins violently shaking up and down in two halves. Then, once it reaches a critical point, about an hour later, the picture starts getting better (colours are perfect) but still shakes a little.
Accessing service menu is done by setting TREBLE to MIN, BASS to MAX in user menu, then pressing Index on the remote and VOL- on the TV. I selected test patterns and they're still distorted. Now I know most Panasonic plasmas do generate the test patterns on the D board but how to be sure? I pulled the LVDS from the D board, I get a little flicker from panel but the patterns stay up, and I can still cycle through them, I guess the control interface is on a separate cable. So, they must be generated by the D then, and since they're still distorted, it's probably a D board issue...
I'm going to check the supplies/regulators on the D board but if they all check out, I'll just swap the D board as it's available for £15 postage included from eBay.
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