Here is my recommendation for Strobe Repair in Los Angeles: Holly Enterprises - Los Angeles, California Orders/Repair - 800-988-7111 Tech Advice - 818-892-9020 Brent Hollister - Great guy - knows it all when it comes to strobe equipment. Located in the San Fernando Valley - Call for address and directions.   Factory authorized repairs - Custom Designs - Machine Shop - Special Adaptions - Custom Cables - Parts Flash - Camera Brackets - Sync Cords - Flashtubes - Modeling Lamps   Speedotron, Norman, Photogenic, Dynalite, Novatron, Graffex, Camerz, Beattie, Hawk - others.