lewis you are the guru i was seeking
It's the bipolar version.
To show how much i appreciate your help, and what a nice guy i am, here are some genuine oscilloscope titties!
Heres the in / output i used today. Input at the top, output at the buttom.
The first ic at x10 attenuation is an almost perfect replication of the original sinewave.
The second ic is not used for the clean channel.
The third ic at x1 is also a perfect sinewave, however it seems to be a bit low?
The forth ic is also pretty good... however lets have a closer look at that
It has some noise going on... but checking the schematic, it's the one connected to the spring reverb, so noise must come from there, even though the pot is turned all the way down.
I measured across R40, the first transistor at the output stage, and what do you know. Perfect, so nothing wrong at the preamp stage.
Now, this is the collector at the first transistor (BC560) in the output stage (TR4). The base is comming from R40.
Here is the emitter from TR4, looks exactly like the output, just attenuated, cause it haven't gone through the power transistors yet.
The collector is connected to a couple of resistors that is connected to BD139. The BD139 is connected via BC183 to the emitter of TR3 and TR4. So it looks like you where right on the money lewis.
Im not sure where to go from here, if i should just get some new transistors, or if i should test something more - cause im not shure how to do any further testing right now. Thansk for the help so far!