Made some progress last night on the board. Got all the resistor, capacitors installed. I stopped after installing the relay. I’m using sockets for the transistors, opamp and midi IC — waiting for the socket for the opamp which should arrive tomorrow. That’s OK, slow is good.
A note, the instructions for Trimpot VR10has image 70 so what is probably and older board design. It confused me as to how to install it positioned correctly. So I put it aside. Later, I saw images 79 and 80 and they show the board I have and the correct orientation. So all is good.
Next step (starting tomorrow) will be installing input/output jacks and go from there.
I screwed up the heat shrink tubing for one of the optical couplers. Fortunately, I’m a heat shrink junkie and I have LOTS of heat shrink tubing. So now one coupler is black and the other is blue. At least high pass and low pass will be easily identifiable.
Also, I have a jewelers loop which helped a lot in checking the integrity of my soldering and any possible shorts (there were none). That loop has been indispensable. I highly recommend anyone doing work on these small boards have one in their tool kit.Mine magnifies 8x which is plenty to see minute areas on the board easily.
I will likely finish up tomorrow evening but we shall see. Just want to have the socket for the TL074. It should arrive tomorrow.
The cat just lounged quietly on the workbench and didn’t really give me any trouble. I guess she felt she was supervising.