California Audio Labs CL-5 repair?

I purchased a California Audio Labs CL-5 changer on Ebay, and apparently got burned. For a unit that the seller claimed "functioned properly" this puppy is doing virtually everything wrong. The random function doesn't work, error codes come up, the remote functions erraticly etc. When it does work, it sounds great and plays the cd flawlessly, but the control functions are a mess. I'm wondering if it's worth repairing, who I might find to do it, and what the cost might be. A Google search brought up Approved Audio Service in Litchfield, CT. Anybody have any experience with them? Any help would be much appreciated! Ben