Dynaco MK III P782 power transformer issue.

[stereohifi]

I have redone a pair of those MK3 to original with tube rectifier,etc.

I just got a power transformer issue, primary is short. Secondaries are all ok.
It does not smell burning, i did open it could not reach inside the primary section as mostly have to destruct it completely.
Anyway, P782 dates maybe from 40years++
I was in a Paoli design modded MK 3 amps I bought used.
I highly suspect that, because of this Paoli design that used a SS rectifier and a 1000uF capacitance, it did fatigue the power transformer all right .
This Paoli mod was supposed to be great, but I now don't belive it, and if a product or item is design for a typical service, please , let it be the same.
Just to advise community here.
Will replace both P782 soon, well it happens..........

 

[audiowize]

I had a customer bring by a pair of Dynaco monoblocks with those mods installed. I inspected what was done and asked him if he could return them to the seller for a refund, which he did.