New fuses brought the amp back to creating buzzzzzz. Damn.
But I bring you good news readers.
A casual conversation with a good pal revealed that his 3240PE - given to him as a rather generous birthday gift around the same time I got mine - was not in fact dead, but sitting in his loft - unused for about 15yrs. As far as he could remember it was working fine when put there, but there was NO PLUG FITTED to allow testing to be performed.
He said I could have it gratis, but what sort of dick would do that? So it was instead exchanged for a couple of bottles of FINE WINE (see my other thread about winez).
Brought it home, cleaned it a little, and fitted a BRAND NEW PLUG”, and..... it lives!
Only issue is a slight crackling if you adjust the balance, but since I never adjust the balance - who cares?
Vintage-amp Friday Night Living Room Disco was held last night in celebration. My head still hurts a little.