Home |
Search |
Today's Posts |
#1
|
|||
|
|||
Sansui D-90 cassette deck ff / rewind problem
HI All
I know it's very 'low-tech' by comparison with all this modern digital stuff g - but it's the best thing that I have to copy my old cassettes to cd for archive and to use in the car.... so..... This 'ageing but virile' tape deck was thrown my way - and a quick clean of the tape heads has restored it to reasonable condition. Playback levels were slightly down on the left channel - but there are presets inside the cavernous case to adjust such things - and now it's looking and sounding much better. Only slight snag is that the machine isn't very keen on fast-forwarding, and just sulks when asked to rewind tapes. Playing at normal speed is fine. on rewind the motor engages, then drops out again after a few seconds (?some kind of 'tape-not-moving' detect circuit?). I'm thinking that it's probably a mechanical problem - before I dive in there and wreck it completely - can anybody please give me some pointers as to what might be wrong ? Many thanks in advance Adrian Suffolk UK |
#2
|
|||
|
|||
Sansui D-90 cassette deck ff / rewind problem
In article , Adrian
Brentnall wrote: Only slight snag is that the machine isn't very keen on fast-forwarding, and just sulks when asked to rewind tapes. Playing at normal speed is fine. on rewind the motor engages, then drops out again after a few seconds (?some kind of 'tape-not-moving' detect circuit?). I'm thinking that it's probably a mechanical problem - before I dive in there and wreck it completely - can anybody please give me some pointers as to what might be wrong ? The capstan (the little silver post that moves the tape) is normally driven by the motor from a belt. There is then a set of rubber idlers, belts, and clutches that drive the take up and feed reels. These things can get dirty and the rubber parts can get hard with age. Either will cause the problem that you are seeing. More advanced decks have a motor that directly drives the capstan, and a 2nd or even 3rd motor to drive the reels. You may have a mechanical or dirt issue, but might just as likely have an electronic problem in this case. Dig in and see what you find. -john- -- ================================================== ================== John A. Weeks III 952-432-2708 Newave Communications http://www.johnweeks.com ================================================== ================== |
#3
|
|||
|
|||
Sansui D-90 cassette deck ff / rewind problem
HI John
Many thanks for the reply I took a quick look inside the mechanism last night. There is indeed a 'tape moving' detector - driven by rubber belts, and linked eventually to the mechanical tape counter on the front panel. I FIXED IT ! g I think it was a combination of some grubbyness on the detector shaft (which was causing the belt to slip, and the 'non-movement' to do its job, causing the main solenoid to stop the motor) and a very 'dry' bearing on the shaft itself which was making it more difficult for the shaft to rotate. Tiny amounts of cleaner and lubricant seem to have done the trick - many thanks for the suggestions. Regards Adrian Suffolk UK |
Reply |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
60 hz cassette deck on 50hz power? | General | |||
Nakamichi Cassette Deck Alignments | General | |||
balance problems with a Technics 676 cassette deck | Tech | |||
3-head cassette deck: Tascam 130 vs. Sony TC-KE300S | Pro Audio |