Yahoo Groups archive

Vintage Synth Repair

Index last updated: 2026-04-28 23:41 UTC

Message

Yamaha CS-5 schematics

2005-07-12 by Chris Strellis

Hi,

A plea for help\information.

Well it looks like the transformer has gone on my newly acquired CS-5 
and judging by the repairs not for the first time either!

The part no. is GA81411 which doesn't ring any bells with Google.

What I'm thinking is replacing the whole PSU section with a bought in 
switch mode killing several birds with one stone - ageing Jap caps 
any one?.  Now I need to know the output voltages that a CS-5 likes.

I have a CS-10 and corresponding schematics but this needs +15V, 0, -
15V and +10V.  The CS-5 seems to need just +/-15V.  Can anyone 
confirm this?  Better still anyone have schematics for a CS-5, I can 
trade other schemos for it if necessary.

Best regards

Chris

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.