What to do when buyer claims sellers item broken?


I recently sold a Bottlehead Paraglows amp with AVVT 2A3 meshplates on Audiogon. The tubes were triple boxed and shipped separately via USPS Priority insured. The amps bases were shipped separately via Fedex Ground insured. I was very careful with all my packaging. I know these amps work perfectly before I shipped them out. Now the buyer received the amp and the tubes, and claims the tubes glow up then died. This is the first time I have had problem with selling my equipment, and I am not sure what to do here. If the amps and tubes arrived without any visible box damage, how can they be broken? There are minimal circuits in the amps to be broken, especially inside a wood box covered by thick foams and double thickness box. Please understand that I am not saying my buyer is doing anything to it, I just need advice on what to do next to rectify the situation. I don't sell a lemon, and I don't want a negative feedback from any buyer, ever.
PT
pt999

Showing 1 response by dekay

Did the new owner know how to properly install the 2A3's? If both amps failed upon power up, it would seem to me that they were not (properly installed) and it would not take very long (a few seconds, as described) to trash the amps.

If so, this should be easy to determine upon inspection by a tech.

Sorry I do not have a solution, but this is what I suspect may have happened (based on the new owner's description of the event).

I own the Paramours, by the way, and yes, there is not much to go wrong if they are properly used.