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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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rca ptk169pgb lost video
RCA rear projection tv looses video after about
three minutes. Maybe unrelated but the picture also creeps up from the bottom. I also have seen three vertical lines r,g,&b bowed across the center of the screen...thanks for any help. Brotherinlaws tv trying to fix before the big game. Auburn/Alabama...Go tigers |
#2
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rca ptk169pgb lost video
How about some voltage measurements?
Are all the main SMPS voltages correct on the secondary both in standby and run? What about the scan derived voltages? Is the set losing vertical sweep due to the vertical circuit, or the jungle ic circuit area? How much experience do you have on the ctc169 series of chassis? Is the service manual or schematic available. Just not nearly enough information posted yet to even hazard a guess. Do some basic tv electronics troubleshooting and post the results and where you get stuck. David L. Kotney wrote in message ... RCA rear projection tv looses video after about three minutes. Maybe unrelated but the picture also creeps up from the bottom. I also have seen three vertical lines r,g,&b bowed across the center of the screen...thanks for any help. Brotherinlaws tv trying to fix before the big game. Auburn/Alabama...Go tigers |
#3
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rca ptk169pgb lost video
Sounds like it's losing vertical sweep. Not a real common problem on 169's,
although I've seen it before. All the ones I've seen were repaired by a thorough soldering of the entire vertical circuit area... |
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