Well, my first post on tube amps.

I just got a hold on a Dynaco Stereo 70 tube amp. Very old, looks dirty and I dont know the operational state of the amp. I am researching internet to get manuals, or topology, or kits for repairing (in case it needs it)

I will try to get it working as soon as I can, as I have the chance to buy it from the owner, but I want to make sure that is recoverable.

What is the things I need to look for to be sure I can repair it? I know that I should not connect it without a speaker load, but I dont want to connect my M22's before knowing I am not going to fry anything.

If any hint on what to look for, let me know please.

Thanks