Simulcast (latest version) semi working

innerlight

Active member
Hey all
just finished the new version of the simulcast. When engaged all knobs affect the sound, however the sound is weak in all three modes, a tiny bit of drive, not much increase in volume.
When I first plug it in to the power it sounds how it is meant to for two seconds then it fades back to that quiet/ weak state. if I really dig into the strings it sputters here and there like a gated fuzz.
I’ve built a duo cast in the past and it worked great.
Im pretty confident the problem lies with the ge transistor. I have an OC 71 in it right now. If I wiggle it about it has splutters here and there. I know the transistor works because it was in a functional duocast and it worked fine (a little weak but pretty good).
I have a bunch of MP20 transistors coming so I’ll try them when they arrive. Does anyone have any advice in the mean time? Many thanks.
 
I have to admit that turning over the cap and reflowing joints didn't help. Still sound is weak. I measure around 80hfe on OC71 maybe that is a culprit?

Edit: There is 1uF cap instead of 1nF🤣🤣
 
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