Here's a list of amp techs in the San Francisco area. I pulled together and updated the info from a couple old threads and also got some other names via google. If you have experience with any of these techs, please share your thoughts and if I missed somebody, please put contact info here. I'll also try to compile some of the comments that I found around the web.
CAE Sound
85 North Amphlett Boulevard
San Mateo, CA 94401-1805
(650) 348-2737
info@caesound.com www.euthymia.org
Alameda
Chris Barnett
Corte Madera
415-385-9438
Craig’s Amp Repair
15 Lafayette Street
San Francisco, CA 94103
Neighborhood: SOMA
(415) 864-1952
Fathers Amp Repair
(510)-581-7926
Fathers Amp Repair (www.fatubesound.com)
Stan Bailey
Mojotronix
Electronics Technician
185 Forest Ave. Suite B
Fairfax, CA 94930
(415) 721-0550
Cell 497-0531
Website:
Amp Repair By Mojotronix
Ron Ott
King Amplifier Co.
ronott@mindspring.com (ronott@sbcglobal.net)
3348 Arbor Drive
Pleasanton, CA 94566
Phone: (925) 846-1459
Curt Emery/Emery Sound
Emery Sound Vintage style all tube guitar amps
The Amp Lab
279 Dillon Ave
Ste 1
Campbell, CA 95008
(408) 871-2422
Hal at Guitronics
9th St, San Francisco
415-621-3904/415-621-3135
Pro Audio Repairs
400 Treat Avenue, Unit H, SF CA 94110
http://www.proaudiorepairs.com/
L&M Electronics
Daly City
http://www.landmelectronics.net/
Craig Mueller/ Powerage
Oakland
http://pwrage.com/
Dan Torres
San Mateo
http://www.torresengineering.com/