Thanks Peter,?I really appreciate your reply!
I was very surprised about the lack of any information on the web about that board. I even asked a few Swiss OMs, but somehow nothing came out!!!
The main reason I enquired about that board was that the S-meter somehow stopped working; then, I realized that the 500ohm pot was damaged, and when I replaced it, an evil-looking smoke came out of 'somewhere' and the S-meter was still dead...
So, I suppose the next step will be to replace the 2sc828q transistors (wish me good luck!).
Thanks again, have a nice weekend!
73 - Joseph F4JVO?