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Question for people with working CTC-15s
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Last edited by andy; 12-05-2021 at 08:40 PM. |
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If the ghosting is caused within the TV itself it is usually variable by the fine tuner. If so, look for a defective mixer tube or 3rd video IF. If not tuneable, make sure that someone did not bypass the delay line. If all else is OK, it must be coming from the antenna system.
Does it ghost on a B&W show? Does the color control affect it? Does it ghost with a cross hatch generator? Don |
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Last edited by andy; 12-05-2021 at 08:40 PM. |
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I dont remember mine ever doing that. Is the ghost actually green like it looks in the pictures?
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Last edited by andy; 12-05-2021 at 08:40 PM. |
Audiokarma |
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<<Does it ghost on a B&W show?>>
Since everything now is broadcast 'in color' (even if it's black and white source), a good way to diagnose this part would be to adjust the color killer up enough so it completely kills the color, then see if any change in the ghosting. But just turning the color control to zero would probably be equivalent...Frenchy |
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Try removing the last video IF tube (or grounding its grid), and feeding a video signal from your crosshatch generator into the grid of the 1st video amp. IF no ghost, the problem is FI or tuner. Try using a tuner subber and feeding the set from the IF output of the subber, bypassing the tuner. This will isolate the ghost to the tuner, IF, or baseband sections of the TV.
Good luck.
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John Folsom |
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Last edited by andy; 12-05-2021 at 08:40 PM. |
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shielding
make sure all of the grounds are good, resolder all ground lugs where the circuit boards ties to the chassis and make sure all shields have been replaced.
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[IMG] |
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Quote:
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julian |
Audiokarma |
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