Hoping someone can advise with a Jupiter 8 I currently have for repair. I have the service manual and have diagnosed through the Test mode
The issue is that I initially found that Voice E(or 5) VCO1 is sounding raspy compared to all others that sound the same.
I've swapped Module boards over and it's still there for E(5) VCO1
I've now swapped over the Module control boards and still the same.
So my next option is the Interface board. Looking at the end chain of this, Each Voice outputs via a TL082 (for VCO1 & 2) and then goes to a shared IR3109 ic. Prior to the TL082 is the 4051 1-8 multiplexer ic. I've heard these can be a bit iffy also?
This seems to be the common denominator for my symptoms, having done all the usual steps. Any advice appreciated.
Many thanks.
The issue is that I initially found that Voice E(or 5) VCO1 is sounding raspy compared to all others that sound the same.
I've swapped Module boards over and it's still there for E(5) VCO1
I've now swapped over the Module control boards and still the same.
So my next option is the Interface board. Looking at the end chain of this, Each Voice outputs via a TL082 (for VCO1 & 2) and then goes to a shared IR3109 ic. Prior to the TL082 is the 4051 1-8 multiplexer ic. I've heard these can be a bit iffy also?
This seems to be the common denominator for my symptoms, having done all the usual steps. Any advice appreciated.
Many thanks.