Picked up a really nice condition CA-810 for a couple bucks on craiglist today. Advertised as not working, and by the description from the seller, it sounded like blown output transistors. He said that it blew the main fuse one day when he turned it on. He replaced the fuse, and it powers up, but there is now no relay click and no sound from the power amp. It passed the dim bulb test fine. I tested the preamp section with an external power amp, and it sounds great. I pulled all four output transistors, and both on the left channel were shorted. The relay clicked in fine after a few seconds with the outputs removed. The output transistors don't match the schematic. I have a 2SD425 and a 2SB555 on the good channel, and a 2SD551 and 2SB555 on the bad channel. The 551 also had a different-looking metal for its case than the other three. It didn't look like anyone had been in there before, but I'm not sure now. I think the 425 and 555's could be originals, but the 2SD551 has been changed I bet. For replacements, I plan to order the following from mouser: 2SD425-----------MJ21194G 2SA679 (2SB555)-----------MJ21193G Does anyone have advice on how to get to the power amp board? I can't see anything that is obviously damaged just looking in with a flashlight, but I want to inspect it a little better, and it's buried under the function circuit board, which I may need to remove. What other transistors are suspect before I install the new outputs, or does the relay click with the outputs removed indicate that new outputs should fix it?