[sdiy] 2sd1293m replacement?

[Doug Terrebonne]

Was the display transformer still good? Usually that's what fails in the MKS-70 
not the transistors. I can see if I have them though. Do you know if they were 
used in any other Rolands?

Doug 
synthparts.com



----- Original Message ----
> From: James Coplin <james at ticalun.net>
> To: synth-diy at dropmix.xs4all.nl
> Sent: Mon, September 5, 2011 11:05:49 PM
> Subject: [sdiy] 2sd1293m replacement?
> 
> Transistors are one of those things that I have to admit just flummox me.
> I  am in need of a pair of these now obsolete transistors to repair the
> display  board on a MKS70.  I can't believe there isn't a suitable
> replacement  part out there.  Anyone happen to know or can tell me the
> rules for  selecting a suitable replacement?  This is a regularly recurring
> problem  for me lately.  It seems there are just thousands of these things
> - do  we need so many?  Are there really that many variations?  How do  you
> know which to use and sub?
> 
> James R.  Coplin
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