Wow. I just wanted to get an old PL400 working again. I just did not know how deep the water was. Have PL400 series II S/N 4A 30901. I cant relate that S/N to the list. Anyway. If I just want to get the ole gal just goin again, what is the minimum I should do? I bought this for my brother many years ago. He gave it back with one channel dead. In reading on your site, looks like i need cap upgrade, maybe control board at minimum? I plugged it in and immediately blew one of the AGX fuses. Bad ouput trans?? I am willing to spend couple hundred but not like 500 or more. Is it a lost cause? what are my next steps? I piddle with electronics. have bachelors inEE (that dont mean nothin). but do know my way around basics of old school schematics of transistors and use of DMM an.d such. So know a little, not a lot. I did some looking in the forum, but like I said, the water is deep. Took me over an hour just to hopefully figure out that WOPL means White Oak Phase Linear???