Just because the dealer could not find anything does not mean there is no problem. case in point, I bought a used preamp which had been at the mfg's service center for an issue which was supposedly fixed. The seller had it shipped directly to me. When I got it and hooked it up, the right channel quit working. Changing tubes didn't help. When I called the seller, he was shocked and said that it was the same issue he had sent it for repair. However when talking with the mfg, she too had left it running for a week trying to ;locate the issue and found nothing. I sent it back to her and declined the sale. Anyway, I learned later from the seller that it was a resister gone bad.
Some things happen like that and when your car has an issue that never shows when you take it to the mechanic. Life, I guess. The frustrating part
Some things happen like that and when your car has an issue that never shows when you take it to the mechanic. Life, I guess. The frustrating part