Cal does not have any service techs. They all quit. However they have set up outside authorized repair centers. Try www.approvedaudioservice.com for help. He can fix your machines. Also go to www.sonicblue and look under the service area and you will find the other two companies that do repairs for Cal. I own the complete 2500 series. Cal audio is really no longer a brand. They haven't manufactured new stuff since April of 2001. The company is up for sale but it has been for a year now. Maybe a true hi-end company will buy them. Sonic Blue is a mass-market company and started dismantling Cal audio as soon as they bought it.
