Vintage Synth Repair

For what it's worth I too would suspect the new pots are not the correct
value.  From your description I would hazard a guess that the new pots are
out by a factor of 10; so for example if the original pot had a value of 1M
Ohm the new pot was 100k Ohms.  This would account for the reduction of
around 10 in your decay time.

 

I'd check the old pots against the new using a multimeter.

 

Regards

Brian G3OYU

 

From: vintagesynthrepair@yahoogroups.com
[mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of alexandrodeexu
Sent: 20 May 2010 5:13
To: vintagesynthrepair@yahoogroups.com
Subject: [vintagesynthrepair] Roland SH101 envelop generator

 

  

Hi
I have a problem with Roland SH101,after exchange of pots in VCF and Envelop
to brand new,all envelop generator settings became wrong,maximum time for
Attac,Decay & Realise is about 1.5s ( must be 10s ),And also there's no
effect from sustain pot if I stay high decay parameter.
Thanx.