I bought a expensive restored 1960s Grundig Weltklang 3012 car radio on eBay Germany. When I installed the radio, no sound came out of the speakers. It would have cost $100 to mail the radio back to Germany for repairs and have it sent back, and even then, the seller did not seem interested in repairing it, but rather, wanted to substitute a less expensive radio, and I would still have had to pay for shipping.
I contacted many different vintage radio repair shops in the USA. Even the ones that restored vintage German car radios would not touch it, and the shops that repaired Grundig radios would not touch it because it was a car radio. It seemed that no one in the USA was willing to take a look at it.
I even visited many different vintage electronics repair shops in Phoenix like Dyna-Tronics, and no one was willing to look at it, but several of the shops recommended Jeff's Professional Audio. I brought the radio by, and they repaired it the next day for $80. I was amazed that not only was this shop willing to look at it, but they actually repaired it! And in short time!