Hi! ngen33r. I got you a problem with the plat Sub-12. And this board just burnt to ashes, damaging all the connecting tracks.With the help of your photos, I was able to restore this from the side of component installation, but I do not know how it was on the back of the board.I would really appreciate you taking photos here of this back side of the board?
I have experience in repairing radio equipment and have tools, but this sub - 12 is very rare for our litle city of Orenburg and two days of searches on the Internet did not bring me luck in obtaining a service manual or other useful information. And all the most useful links on the Internet lead to you! I really hope for help with photography and of course thank you anyway!