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Thanks for the help guys. ended up being one of the .1uf 400v caps on the bias supply. So the tube are good but then my lead gain was maxing out a 4 then dropping off and my master was making a horrible popping sound, so I checked the rest of the caps and found 3 bad .047uf 400v caps swapped em...

Thanks for the info.

Just because I'm new to this board doesn't mean I'm new to mesas, I never use tubes out of range. I've had my mkiv and f30 for years and always use mesa or tubes from a vendor that sells mesa spec. Thanks

Hi I'm new to this board. I just got a mkiii I think purple stripe the year looks like 91. The amp has not been used in about nine years, so when I got it home I cleaned the tube sockets and pots, put some good tubes in and cranked it up. Besides a few pops and crackles it sounded pretty good...