[sdiy] CR-78 help

[John Loffink]

Places to start:

 

1)       Check power supply voltages at op amps and logic devices.
Typically +/- 12 or +/-15 at op amps and +5 at logic devices, though 4000
CMOS logic can run at 15 V.

2)       Check for loose/intermittant connections between cables or boards.
Reseat all connectors.

 

John Loffink

The Microtonal Synthesis Web Site

http://www.microtonal-synthesis.com

The Wavemakers Synthesizer Web Site

http://www.wavemakers-synth.com

 

-----Original Message-----
From: owner-synth-diy at dropmix.xs4all.nl
[mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of SRRecords at aol.com
Sent: Friday, December 16, 2005 2:32 PM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] CR-78 help

 

Hello all.  A dream of mine finally came true: a roland CR-78!  Cosmetically
it is gorgeous.  Problem.  It makes no sound (yes, that IS a problem!)....

 

it powers up, and the lights come on (sort of/sometimes, usually).  I hear a
buzzing sound when plugged into the mixer. That's it.

 

Any recommendations on what to look for or with what might be wrong?

 

Thanks,

 

JM

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20051216/8bed7195/attachment.htm>