Vintage Synth Repair

Hi,

I have a Roland SH-101, but the SQUARE wave output sounds very tiny 
compared with the SAW and SUB OSC output, i had the same problem with 
a SCI Pro-One long time ago, but that was only that was un-
calibrated. I tought could be the same problem, but everything it's 
ok, the scale and tune are fine. I checkd the pin ouputs of the 
CEM3340 and seems to be fine, also i tested with other 3340's but 
nothing,  anyone have a clue ? 

Thanks,

Akira

Do you have a schematic to look at?  I'm not familiar with the SH-
101's circuit, but my guess is that if everything else between the 
wave generator and the next stage check out, it could be something 
very simple like a short in the switch that selects the waveform.  
Have you tried cleaning the switch or swapping it out?


--- In vintagesynthrepair@yahoogroups.com, "oxygeno1313" 
<oxygeno1313@y...> wrote:
> Hi,
> 
> I have a Roland SH-101, but the SQUARE wave output sounds very tiny 
> compared with the SAW and SUB OSC output, i had the same problem 
with 

> a SCI Pro-One long time ago, but that was only that was un-
> calibrated. I tought could be the same problem, but everything it's 
> ok, the scale and tune are fine. I checkd the pin ouputs of the 
> CEM3340 and seems to be fine, also i tested with other 3340's but 
> nothing,  anyone have a clue ? 
> 
> Thanks,
> 
> Akira