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Panasonic TV picture went to horiz. line

It's a Panasonic CT-36G24C. I've had it for 5 years. I came home from work today & turned the set on. The pic was okay for a while, but when I looked back, it was a horizontal line in the middle. I could see movement. I turned the set off & turned the surge supressor off for 5-10 min. When I turned it back on, the picture was full, but shuddered for a minute, went to a thin line & then went full. It's been fine for 3 hours now. I read in the paper that the hydro company's been lowering the voltage intermittently due to the high usage. I'm hoping this could be the cause, but I'm not too optimistic. Does anyone have an idea what could cause this & about how much I can expect to pay to fix it?

Thanks,

Chris

Reply to
Chris
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Hi, Chris, if you want to get inside it, if your vertical went bad, it could be a $5 part that would be the vert IC. It could be a bad fusable resistor not letting voltage get to the vert IC. Or maybe a bad capacitor or two. Cheaper to fix your self. Shop, if your lucky $70. Wish I was there I would fix it. Donald

Reply to
Donald

If you have access to a Variac, you could try lowering the voltage to see if that causes the problem. Did the lights di about the time of the failure?

Or, plug the tv into a long extension cord with an electric iron also plugged into the extension cord. That should lower the voltage somewhat.

Or, the next time it fails, spray various components in the vicinity of the vertical output circuit with cooling spray to see what that does.

H. R.(Bob) Hofmann

Reply to
hrhofmann

Sounds like the very common bad solder connections issue. Beat the top of the set and see if the problem can be duplicated. If tapping the set causes the picture to collapse, soldering the vertical output chip is needed. The old LA7838 IC with bad solder trick.

Reply to
RonKZ650

Thanks for the comments. I didn't have any lights on so I don't know if they dimmed. I'll try the iron & tapping tricks. It looks like it won't be too much to have it looked at & repaired. I'm no electronics technician, so if it does it again, I'll bring it in to a shop.

Thanks,

Chris

Reply to
Chris

It's nothing to with reduced mains voltage. You have a problem with the vertical scan (field) circuit - could be any number of things, although a dry solder joint is a strong possibility. A bit of judicious tapping around the field ouput ic might help locate the problem.

Reply to
Barney

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