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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc. |
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28th Apr 2015, 9:35 pm | #1 |
Heptode
Join Date: Aug 2011
Location: Bristol, UK.
Posts: 538
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Tascam Midistudio 688
Hi all,
I am attempting a repair of a Tascam Midistudio 688. The problem seems to be that after a few seconds of playing the tape it abruptly stops. The belt was stretched so it has been replaced the rest of the mechanism has been cleaned and regreased yet the problem still persists. Has anyone got any service data and schematics for this unit? Has anyone any experience of working on them? Kind regards, Tim. |
28th Apr 2015, 10:06 pm | #2 |
Dekatron
Join Date: Mar 2008
Location: Worthing, West Sussex, UK
Posts: 5,185
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Re: Tascam Midistudio 688
I am not familiar with this particular unit, but the problem could be the autostop mechanism. Many decks rely on a sensor on the tape counter, it is usually caused by the counter belt stretching or breaking.
Mark |
29th Apr 2015, 9:40 am | #3 |
Octode
Join Date: Mar 2006
Location: Lund, Sweden
Posts: 1,631
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Re: Tascam Midistudio 688
Many forms of autostop work by having some sort of switch actuated at each turn of the supply reel. As long as the switch is continually actuated the deck runs, but once it is interrupted for long enough a detector circuit triggers and stops the deck. Don't know if this is what's used in the 688 though, but it sounds like that type of mechanism given the time involved.
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29th Apr 2015, 10:29 pm | #4 |
Dekatron
Join Date: Aug 2006
Location: Madrid, Spain / Wirral, UK
Posts: 7,484
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Re: Tascam Midistudio 688
First things first:
- Is takeup smooth? No looping? - Is the sound steady, no wow or flutter? - Are wind/rewind functional? - Does the shut off happen only at tape end or start, or at any point? - Have you tried different tape lengths /brands?
__________________
Regards, Ben. |
2nd May 2015, 7:37 pm | #5 |
Heptode
Join Date: Aug 2011
Location: Bristol, UK.
Posts: 538
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Re: Tascam Midistudio 688
Thanks guys,
will get back to you all once I'm back in the workshop. |