A problem with Yamaha Cs-15

[Matthew S. Padden]

Hi..

Antti wrote:

>  I'm buying a CS-15 which is a bit broke. Those of you who are   familiar 
>with 
>CS-15's internal organs, could you tell me what is the 
>4cm x .4cm x .6cm black box with three contacts labeled ground, N   and L ? 
>It's 
>located in the mains-cable side of the synth.

TREAD CAREFULLY. All the usual warnings about playing with the mains supply 
are relevant here.

The box is either the power supply for the synth or an interference filter. 
If the cables coming out of the box look very similar to those going on , 
it's most likely a filter. These remove any spikes and RF noise that come 
down the mains supply, and any that the synth generates itself!

You should be able to pick one up reasonably easily; they're widely used. 
Check out your local electronics suppliers, or try the computer stores.

If the box is the actual power supply, you'll need to find out what voltages 
it generated and what current capacity it had. If they're 5V, 12V etc you 
should be able to replace it fairly easily with an encapsulated supply from 
someone like RS components. Otherwise you could try Yamaha themselves, and 
see if they still have any spares.

Once again: BE CAREFUL WHERE YOU STICK YOUR SCREWDRIVERS! Being thrown 
against the wall by large electric shocks is NOT pleasant.

Hope that helps

--
Matthew S. Padden
Computer Music Research Group
Room M2/08, Music Dept.
Huddersfield University
Queensgate
Huddersfield
England HD1 3DH
p: +44 1484 422288 x2402
f: +44 1484 472656
e: mattp at mindless.com
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"The masses are asses and need Tonto's glasses!" (Mark Mothersbaugh)