kobachi
02-26-2013, 12:30 AM
I'm the proud new owner of VIN 6248 (Nov '81), just purchased from DMC Northwest this Saturday. The car is almost totally stock, save for some repairs and a Wings-a-Loft system I had installed at purchase time. This includes the Craig AM/FM/Cassette deck.
The LCD on the cassette door is not functional, but the radio works (and sounds) just fine. The speakers all seem to be in good condition and sound about as good as they could for a 1981 stock stereo! AM/FM radio works fine.
However, the cassette deck does not work very well. With actual cassettes (Thriller and BTTF :rofl:) there's a ton of wow and flutter, and different frequency bands come and go as the tape plays. If I push down and (rolling-wheels direction) forward on the cassette a little bit, the sound quality greatly improves to how I would expect it to sound, but the improvement doesn't stick and reverts as soon as I remove the finger pressure.
Quality from a minijack/cassette adapter is a little better -- obviously there's no wow/flutter because there's no physical tape rolling, but the bands moving in and out problem remains. Additionally, there's almost an echo or reverb present, like the stereo channels aren't quite in-sync. Pushing forward on the cassette adapter doesn't affect a change in sound, but pushing down on it results in crystal-clear audio that even has a little bass kick! Unfortunately pushing down on the adapter causes the "auto-reverse" feature to kick in, which kills the audio. Removing the pressure puts it back to baseline.
I don't know much about cassette decks, but it seems like there is likely both a head alignment problem and some worn-out moving parts. I'm likely to replace the whole unit with a modern unit soon, but I'd sure love to get this one in good working condition before taking it out. And part of me does love the nostalgia of listening to era-appropriate cassettes on the stock radio.
Has anyone opened one of these up, or could anyone perhaps offer some troubleshooting and/or repair advice? I bought a cleaner/demagnetizer cassette from RadioShack (and now see that it has very poor reviews online), but it didn't seem to help much.
Even a workaround to disable the auto-reverse feature and perhaps build a little shim to apply pressure to a cassette adapter would work for now!
The LCD on the cassette door is not functional, but the radio works (and sounds) just fine. The speakers all seem to be in good condition and sound about as good as they could for a 1981 stock stereo! AM/FM radio works fine.
However, the cassette deck does not work very well. With actual cassettes (Thriller and BTTF :rofl:) there's a ton of wow and flutter, and different frequency bands come and go as the tape plays. If I push down and (rolling-wheels direction) forward on the cassette a little bit, the sound quality greatly improves to how I would expect it to sound, but the improvement doesn't stick and reverts as soon as I remove the finger pressure.
Quality from a minijack/cassette adapter is a little better -- obviously there's no wow/flutter because there's no physical tape rolling, but the bands moving in and out problem remains. Additionally, there's almost an echo or reverb present, like the stereo channels aren't quite in-sync. Pushing forward on the cassette adapter doesn't affect a change in sound, but pushing down on it results in crystal-clear audio that even has a little bass kick! Unfortunately pushing down on the adapter causes the "auto-reverse" feature to kick in, which kills the audio. Removing the pressure puts it back to baseline.
I don't know much about cassette decks, but it seems like there is likely both a head alignment problem and some worn-out moving parts. I'm likely to replace the whole unit with a modern unit soon, but I'd sure love to get this one in good working condition before taking it out. And part of me does love the nostalgia of listening to era-appropriate cassettes on the stock radio.
Has anyone opened one of these up, or could anyone perhaps offer some troubleshooting and/or repair advice? I bought a cleaner/demagnetizer cassette from RadioShack (and now see that it has very poor reviews online), but it didn't seem to help much.
Even a workaround to disable the auto-reverse feature and perhaps build a little shim to apply pressure to a cassette adapter would work for now!