I would like to recommend Bob Randall at Factory Car Stereo Repair, who repaired my Bmw radio,as a future referral of yours for radio repairs.
I was getting guilty frustrated after several months of having no radio that was out for repair and no solution in sight.
Bob was able to locate and solve the problem when two other referrals could not come up with a solution.
I think his expertise pick up on the problem that others possibly missed or were not familar with.
I hope that you will use Bob as a future referral.