AUDIO RESEARCH D-76A

Given the age of this amplifier, I would definitely have someone thoroughly check it out. It is not just a matter of the tubes. I had two of these amps in the early 1970s! I am surprised that you have not blown a fuse.

I think the D-76A has a line fuse but not a screen fuse. Do we know if it has the right line fuse in it?

No, nor do we know who told him it didn't matter whether the tubes got hot, nor whether he heard any music, but I guess his using it means that.

I'm not sure whats the deference between the line fuse in the screen fuse. all I know is that the D-76A has a line fuse. its rated at 6 A 250 V How do we find out weather its the right line fuse? surprisingly it never blew. I will try my third attempt tomorrow to call CALVIN at ARC to ask some of this questions.

Torogi, your last post implies that you are having a hard time getting through to Calvin. That is surprising because he is always available, at least when I call. I know he was on vacation last week, so perhaps he's catching up. If you can't get through to Calvin, then try Chris. Chris is the resident techie at ARC. I know that he supports the local ARC authorized repair guy where I live.

Sorry to sound like an old saw here, but I agree with Hifigeek and the others who have recommended that you ship the amp off to either ARC or an authorized local repair tech. I get the sense that you are trying to trouble shoot the amp yourself and unless you have a deep technical knowledge of electronics in general and ARC gear in particular, I think you're literally playing with fire, IMHO. If it was my amp, that's what I would do.