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I didnt' read all the other answers (in a hurry to leave for the bank)... If not already suggested, R4104 in the power supply perhaps? That causes weird startup problems. It will measure OK with a VOM, but goes up in value in the circuit. It's in CTC-175, 6, & 7 if I recall. It's a 1/8 watt, and I think about a meg. Been 3 years since I worked on "new junk", so I am a bit foggy. And the eEprom INDEED will cause that too. And don't forget to pull the bottom can off the tuner and resolder ALL the places where the upper can is soldered to the PC board.
Charles
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