Poly 61 service manual

[SYSph@ntOPus]

Someone stabbed it repeatedly with a screwdriver. I keep getting this
wierd resonant feedback noise, but only on certain patches when I hit
certain keys. It's almost like the filter is self-oscilating, but it is to
shrill to have any sort of "musical" applications...anyone?
 
(sorry to include part of your message Pete)

On Tue, 14 Sep 1999, Peter Blackett wrote:

> Hello there,
> what seems to be wrong with the Poly 61 ?