Hey ya'll. I'm building this mudbunny to Ram's Head specs with BC239c's, I'm having a few issues with it. I'm getting barely any volume out of it; even with all the knobs maxed, it's waaay under unity. I checked my components and they all seem to be correct (besides using a 3n9 instead of a 4n, but I really doubt that it's the issue). I also made sure that the BC239c transistors are orientated the same way they are on the silk screen and I'm pretty sure that they're the same.
Honestly, knowing me, I've probably got a bridge somewhere, but I've reflowed my joints and I can't see one.
My transistors readings are as following:
Q1: 7.52, 0.56, 0.01
Q2: 7.76, 0.51, 0.01
Q3: 7.75, 0.56, 0.01
Q4: 7.86, 0.92, 0.31
Those emitter voltages are pretty low on Q1-3. Can you guys help?
Pics:
(http://i.imgur.com/gAyoLre.jpg)
(http://i.imgur.com/AwHHLFr.jpg)
BC239 have the opposite pinout of 2n5088. You need to flip all four transistors.
http://www.farnell.com/datasheets/105081.pdf
whoops! That makes sense. Thanks Brian.
(http://i.imgur.com/9fKyTzR.jpg)
We are in buisness. I only destroyed one of the BC239s but I bought extras because I figured something like this would happen. Thanks again, Brian.
Sweet! Love the knobs.