Question about Tape Decks
I looked inside of an old cassette deck that I have TEAC V 307 to put a belt back on the capstan flywheel. I suspected correctly that the belt was slipping. the belt is old and i will replace with a new one, however, now when i turn the power on the DC motor ( connected to the capstan flywheel via this belt) turns continuously regardless of what 'play status' that I'm selecting. In fact it turns continuously even if no status is selected. I'm wondering if this is normal. when i hit FF, REV, Play, REcord, they all work correctly, its just that the DC motor is continuously turning independent of any play status. I don't remember it doing that when I opened the deck but then again I didn't have the power on when I opened it up.
Yes this is normal. the deck utilises what is called a rolling transport and the motor runs continiously to allow for mechanical cam engaged functions to work.
Posted on Dec 09, 2007
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Without physically looking at the cassette deck myself, I cannot be 100% sure the tape is wrapped around the pinch roller and capstan. The capstan is the chrome rod which the rubber pinch roller pushes to regulate the speed of the tape moving across the head. However it is approximately a 90% chance the take up reel for the tape stopped working from a bad tape or a loose belt which drives the tape take up reel. The clicking sounds like it could be the auto reverse solenoid because it thinks the tape has reached the end of play. The fun part is to remove the tape which you may have to disassemble the front panel if you cannot gain access to the tape from the top or bottom. You will need to cut the tape and remove it from the capstan and pinch roller to open the cassette door. Sometimes you can remove the capstan to free the tape. Once you have cleaned all the tape out of the unit make sure the belt for the take-up is good. If it is glazed, cracked, loose or broken order a belt. Clean all the pulleys and capstan and replace the belt. Your unit should be functional after the above procedure.
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It could be the take up spindle does not have enough torque causing the tape to bunch up after the capstan. If you open up the unit you will notice ether belts or rollers for the tape drive. If it has belts you can replace the belt after cleaning the pulleys. If it has rollers you may be able to clean them with a rubber cleaner (not alcohol which will dry the rubber and cause glazing). Make sure the capstan and the pinch roller is clean using a rubber revitalizing cleaner on the pinch roller. "Goof off" from a hardware store is great for the capstan if it has a lot of metal oxide on it.
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