The best place I have ever sent a receiver to have have it repaired is
RadioLabs in N. California. I have sent them 3 different radios for
repair (including my Drake R8B and a Yaesu FRG-7) and had nothing but
exceptional service from them. Goto http://www.radiolabs.com and click
on their radio repair page.

Just thought I would pass this on to you!
Regards,
Lee