The only tech that I have used is Jim at
Amphead... Does mostly tube, but I have brought some solid-state to him with great results... He can tend to get back-logged, but even then gets stuff completed fairly quickly... (The '59 Bassman restoration on his page is my band leaders amp and is a work of art)
Two others that I've heard good things about, but have never had occasion to use...
Bryan Sours of
Soursound... The website looks doa, but TB Member
Pandafist is in a band with the guy and could propbably get you some contact info...
Ross out at
Tigard Music used to do amp repair, (don't know if he's still there or not)...
-robert