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Old 03-13-2026, 03:22 PM
kf4rca kf4rca is offline
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Did you say CTC177? Sorry for not getting back to you sooner. Are you familiar with the legacy of these sets? It is a microprocessor controlled set. May have been the first. The tuner shields get noisy and corrupt the EEPROM data. AND it might do anything after that!. MAY not even turn on. I usually start at the EEPROM. I install a socket and put in a known good EEPROM. You should first re-solder the tuner shield on the bottom of the circuit. A CTC177? Does it have PIP and stereo? Sweet. You should probably obtain the training manual. It was printed in 1993 so it's legacy technology by now! Might be able to download it from Electrotanya.
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Old 03-13-2026, 04:06 PM
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Yamamaya42 Yamamaya42 is online now
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Quote:
Originally Posted by kf4rca View Post
Did you say CTC177? Sorry for not getting back to you sooner. Are you familiar with the legacy of these sets? It is a microprocessor controlled set. May have been the first. The tuner shields get noisy and corrupt the EEPROM data. AND it might do anything after that!. MAY not even turn on. I usually start at the EEPROM. I install a socket and put in a known good EEPROM. You should first re-solder the tuner shield on the bottom of the circuit. A CTC177? Does it have PIP and stereo? Sweet. You should probably obtain the training manual. It was printed in 1993 so it's legacy technology by now! Might be able to download it from Electrotanya.
After fixing the fried power supply, it's been having no problems turning on, just getting full vertical sweep, first starting with a line, then expanding to a full perfect screen in 40 seconds, replacing caps did not seem to help it, and the day after I ordered a v-output chip, it seems to have stopped doing it...
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