Repair man
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Jun 13, 2008, 7:57 PM
Post #4 of 4
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Re: [greenetime] RCA P46101WK picture problem
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The sound you are describing sounds like the high voltage from the flyback or high voltage divider. DO NOT touch these wires with the set plug in. There is around 15,000 volts running through these wires. It might be that one of them have came loose (could have happened while cleaning the tubes). The wires I'm referring to are heavy red wires (the biggest red wires you'll find in the set). There will be one coming from the flyback transformer to a voltage divider & then 3 of the same size wires leading from there going one to each tube. If one of these wires came loose in the voltage divider or flyback, it would make the sound you are describing & would also cause the picture to look as if it had a lot of static. With the set off & unplugged, push on each of these wires trying to seat them back in to their sockets at the flyback & voltage divider ... The only other thing I can think of that would make that sound in the focus block. They sometimes crack & high voltage will arc out of them; this could also give you picture related problems. The focus block is often located in the front of the set behind the speaker grill behind a removable cover plate. This has 6 controls on it 3 for adjusting the focus of each tube & 3 for how much screen control for each tube. Turn all lights off in a dark room while set is running & see if there are any sparks coming from the area of the noise you are describing. -- Dan
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(This post was edited by Repair man on Jun 13, 2008, 8:03 PM)
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