Vintage Synth Repair

if you get stuck just mail the UK branch of Roland and
ask for the PDF to be mailed to you.

Phil.
--- fsimon100 <fsimon001@...> wrote:

> I just called Roland and was told it was $35 plus
> shipping. I forgot 
> to ask if it was available in PDF for free. I
> figured they would 
> have offered if it was an option. Maybe I'll call
> back but if anyone 
> has a scanned copy I would appreciate it.
> 
> --- In vintagesynthrepair@yahoogroups.com,
> "eggwheatis" 
> <eggwheatis@...> wrote:
> >
> > Most, if not all Roland schematics are available
> in PDF
> > from...surprise, surprise....Roland! Phone or
> email them.
> > 
> > He he.. you'll get a lot more than your money back
> right now..as
> > is..so I wouldn't be too worried.
> > 
> > >>Roland JX10 is total dead. I think power supply
> was good. Lower
> > priority. This one I don't have a schematic. Do
> you have one?
> > 
> > 
> > --- In vintagesynthrepair@yahoogroups.com, "Frank
> Simon"
> > <fsimon001@> wrote:
> > >
> > > Hi Steve,
> > > I hope everyone doesn't attack you at once. I
> had  a crazy
> > experience where I bought a Prophet 10, Korg
> Trident Mk II, and 
> Roland
> > JX 10 all for $30 each non working. I am an RF
> engineer and novice
> > musician/Audio repairman. I know linear more than
> digital but I am
> > going to throw out some questions since you
> offered. 
> > > 1)My Trident I fixed due to NiCad battery
> meltdown destroying 
> traces
> > but I repaired the PC board(with wire) and all
> works great Strings,
> > Brass, FLANGER!!!, but the Synth section makes
> occasional odd 
> noises
> > sounds like processing. Any trouble shooting
> advice would be 
> appreciated.
> > > 2) The P10 had no sound, lit up, I found a 5V
> regulator pulled 
> down.
> > Found the bad IC(burned my finger). Then like a
> dumb a## I was
> > checking -5V reg T0-220 on a voice board,slipped
> shorted output to
> > input and took out 4 CEM3310. OUCH!! Still don't
> know why due to
> > internal Zener in CEM3310. I want to continue
> toubleshooting but 
> don't
> > want to buy pricey chips until my confidence is
> up. Can I put the
> > board in without 4 of the 10 CEM3310 and continue.
> I'm sure no 
> sound
> > but -5v reg will be up. Any advice appreciated.
> > > 3) Roland JX10 is total dead. I think power
> supply was good. 
> Lower
> > priority. This one I don't have a schematic. Do
> you have one?
> > > 4) Finally my Hammond H-112 had low volume and I
> found unplugging
> > the Reverb tank it came back full volume. I think
> the reverb is 
> ok. Do
> > you think it could be a tube driver? Sounds odd
> that it would shut 
> the
> > amps down.
> > > 
> > > Sorry for the overload. I'm excited about these
> synths. If I fix 
> one
> > I got more than my money back. The Korg is very
> close. I will cry 
> if I
> > can't fix the P10.
> > > Thanks,
> > > Frank
> > >  
> > > 
> > >   ----- Original Message ----- 
> > >   From: thirteentech 
> > >   To: vintagesynthrepair@yahoogroups.com 
> > >   Sent: Tuesday, April 15, 2008 7:54 AM
> > >   Subject: [vintagesynthrepair] Hi from a new
> member.
> > > 
> > > 
> > >   Just wanted to introduce myself... I am a
> synthesizer service 
> tech
> > from Sydney, Australia. I 
> > >   have been fixing synths since 1982, as well as
> a lot of 
> touring as
> > a keyboard tech. Currently I 
> > >   have around 22 vintage machines that I play
> and use for 
> recording,
> > and have been a warranty 
> > >   tech in Australia over the years for PPG,
> Kurzweil E-mu and
> > Sequential. Hope I can help out a 
> > >   little on the forum, and learn some new things
> too :-)
> > > 
> > >   Steve Jones.
> > >
> >
> 
> 
> 



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