[sdiy] OT: Repairing tape decks?

[Jean-Pierre Desrochers]

Most of these cassette tape decks have some kind of
optical way to check the 'speed' the tape rolls and
if the speed goes too slow the cpu inside the deck
stops the motor and gives a 'end of tape' message.
Most of the time there is a small plastic wheel that
(when rotating) do ON-OFF-ON-OFF-... sequence
on an optical beam read by the cpu. This informs
the deck that the cassette spins and everything is Ok mechanicaly
speaking. Sometimes the led of the beam dies
or the wheel's strap get broken and then the
ON-OFF-ON-OFF sequence stops 'idle'
even if the tape try to spin..
Just check that first..
Also be aware old cassette tends to get
harder to spins with times but not always.

JP


 On Thu 15/12/11 09:35 , Karl Ekdahl elektrodwarf at yahoo.se sent:
> Hi list, sorry for the OT but i'm trying to get myself a tape deck
> (casette) and so far i've already thrown away two broken ones and about to
> do the same with this third one, but i figured maybe someone knows how to
> fix these things. Being mostly mechanical i'm at a loss..
> This particular deck exhibits pretty much the same behavior on both sides
> (it's a dual), one side plays and sometimes rewinds - otherwise anything i
> do (play, rewind, forward) makes the decks give an "end of
> tape"-behavior, in other words it sounds like it tries to move the
> tape but fails and decides it's at the end of the tape and shuts down the
> operation. As far as i can see, all the rubber bands seems to be OK. The
> deck is a Technics RS-T230, i've seen there are service manuals out there
> but they cost ~5 times what i payed for the actual deck...
> Thanks
> 
> Karl
> 
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