Question about GPX HMTU3234 Shelf System
Yes I have yorx combo radio player cd player tape player and record player model no. L150. The problem is tape won't slow down on both tape deck sound to fast or has gitter to it. I don't if it bad motor or something else around that motor. same motor driven both tape deck . I have check the voltage on the motor won't stay same it changes 10 volts to 14 volts.
Posted on Jul 10, 2008
same a transistor.
Posted on Feb 05, 2008
I had this same issue with my stereo. I found that the rotation of the capstan was being blocked by a little glob of a red substance. I removed the substance and it allowed the capstan to rotate freely.
Posted on Jan 07, 2008
It might be a button error like the play button is making the fast forward button work.
Posted on May 28, 2007
Motor speed needs to be regulated by PWM. Reducing the current (with a resistor) actually lowers the torque - which, with a given load, does result in reduced speed - however, different length tapes (60min vs 90min), as well as different quality, and even current position in the tape, will change the load and hence the speed. You need to regulate the speed via PWM. It's sometimes done on a small board built into the motor, in which case you'd have a round hole into which you could insert an INSULATED screwdriver (tiny flathead wrapped most of the way in electrical tape works). It may be done on the main board, in which case you could find a pot conveniently labeled "motor speed", or perhaps "pulse width" or "pwm" or something to that effect. Find it, mark its current position just in case, and turn it to see if it gets the effect you're after. And there are some tape decks in the world with no speed adjust - they are designed with a specific speed motor and the sizes of the wheels and gears are calculated for that speed. Also there may be a mechanical fault/malfunction causing the speed problem. An initial check and thorough cleaning of the capstan and pinch roller should be done. If there is a buildup of tape oxide or a piece of a broken tape wrapped around the capstan, the tape travel will be too fast (do to the effective increase in capstan shaft diameter). If the pinch roller isn't fully engaging, the tape can be getting pulled onto the takeup spool at a speed faster than the capstan control. A different source of trouble might be a slip clutch (possibly an idler/clutch assembly)which is binding, or otherwise not functioning the way it should. Another type of motor doesn't have it's speed controlled by an internal or external voltage.. instead, the motor has an internal centrifugal speed controller. This type of motor can be found on older tape decks, and might not have been utilized more recently. Good luck
Posted on Mar 14, 2006
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Posted on Jan 02, 2017
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It sounds like the belt is slipping or broken which monitors the speed of the tape movement. When you play or rewind the tape, it thinks the tape has reached the end of play and shuts off. You can try a different tape to make sure the tape does not have too much tension on it. If the second tape has the same result you will need to remove the top cover of the deck to inspect the tape drive mechanism. Make sure the belts and pulleys are clean and replace any belts which have glazing or cracks. If the belt is broken you will need to replace it with a compatible belt of the same length and width.
Aug 15, 2011 | Sony CASSETTE DECK Single Dual Cassette...
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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My belts needed to be replaced because the tapes would not eject. Now the tapes play too fast. Could I have threaded the belts wrong?
Please help,
Fred
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