Tech for cartridge and tonearm instillation Los Angeles Area

Brian Berdan is one of the best for this job. His store is in Pasadena.

Yep, Berdan's the man. His shop is named Audio Elements, one block off Colorado Blvd.

Other than Brian there is also Elliot @ Acoustic Image (Studio City).

DeKay

+1 for Elliot @ Acoustic Image. A true gentleman and master setter upper

As a bonus, both Brian and Elliot are very nice people. I can't vouch for Elliot as a turntable technician, as I purchased only amplifiers from him. He had a store front at the time, but I believe he now retails out of his home. Brian has a dedicated turntable workspace, with all the high-tech tools needed for assembly, adjustment, and optimization of tables, arms, and pickups. He was trained by his Pa, the well-known analog expert Brooks Berdan (R.I.P.).