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#1
07-02-2021, 03:27 PM
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TV Tuner's Channel 3 Gone Bad
I'm currently dealing with an issue where channel 3 can't be fine tuned, but channel 4 can.
This tuner is on a CTC-16. The mechanical action seems to be performing ok - gears engaged and turning. There is a white plastic nub that protrudes out the other side of the wafer on ch4 that isn't there on ch3. I'm guessing that maybe this prevents from grounding by a tab that is spring loaded against the fine tuning wafer and defeating the fine tuning? Anyone familiar with the CTC tuner? Ch3 https://ibb.co/KFdjJfM Ch4 https://ibb.co/DbvkV1d Last edited by Jon1967us; 07-02-2021 at 04:28 PM. 
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#2
07-02-2021, 07:36 PM
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Actually, I found the problem. A little white plastic finger is moved through the wafer by moving the fine tune knob and pushes in an actuator that moves a slug ostensibly. Probably this is how most tv tuners work, but I've not had a problem before on one, so this is a first. The "finger" on my ch 3 is jammed and stuck. I could take another channel's part but that would be too much work, so i'll just watch on ch 4, since that works fine.
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