[sdiy] repair recommendations needed

[Cyrus]

Hi all,
I have a Deltalab DL-5 Harmonicomputer that needs repair.  I know this is not
a synth per se, but nobody on other mailing lists has offered any suggestions
so far.
Can you recommend anybody, preferably west of the Mississippi in the USA, who
is good at working on this sort of older esoteric digital gear?
It is very clean inside, with no obvious fried chips or bad connections.  It
works, but there is a bad high-pitched noise that accompanies the processed
signal.
Any suggestions?  Any idea of another list (besides AH and DH) that would
cater to this topic?
Thanks,
-Cyrus

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