Vintage Synth Repair

Hi Matt

 

While I don't know your specific keyboard I do have 50 years of service
experience on similar instruments and I have never ever heard of any passive
components being damage by strong magnetic fields.  I would suggest that
your problem is quite different.  You make a comment about static on the
volume control, by this do you mean that it is scratchy as you operate the
slider?  If this is the case then it is not static it is dust or dirt on the
slider track and can usually be cleaned with a squirt of switch cleaner.
WHATEVER YOU DO DON'T USE WD40!!!!

 

Regards

 

Brian

 

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From: Matt Boyle [mailto:Mboyle00@...] 
Sent: 21 December 2004 01:59
To: vintagesynthrepair@yahoogroups.com
Subject: [vintagesynthrepair] Kustom 88

 

I am a semi proud owner of a kustom 88.  About 6 months ago it stopped
working, not completely.  If I hook it up to an amp (no internal speakers)
or headphone jack I can still hear the tremolo and the volume slider still
control still works (there is a bit of static but that was there before).
If I hold down the keys and turn it on I get sound and the notes sustain and
it cannot be controlled by the sustain pedal.  After it is on no sound comes
from the keys.  I have to wait for the power to drain before I turn it on or
I get no sound by the method previously stated.  (ie. If I turn it on while
holding down keys turn it off and hit different keys and turn it back on
within about 10 seconds the previous notes are still sustaining.)  What I am
pretty sure happened was that a capacitor or two went dead when a 12" jensen
speaker was placed on it for an extended period of time.  I know that was
stupid but it was not entirely my fault.  It seems as if not enough power is
getting to the keys to produce sound.  Just the initial current of energy
can do that.  Does anyone know any specific resistors, capacitors, etc that
I should check.  There are an amazing amount of them there.  I am not
expecting anyone to know much about this keyboard in particular but I am
sure that someone has had something similar happen to a like piano.  I have
time if this will be a lengthy process.

Cheers,
Matt








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