Even with the the level control turned all the way down and the pre amp turned off.
As i did not want to damage my speakers, I had to get it taken care off ASAP. Quick phone call to Bob
Bob gave me a couple of things to check out, one of them was a couple of caps that ground out the 660vdc B+ line.
So after checking them i found one was weak, time to change the caps. There are 3 of these caps in each amp so I ordered
6 x Jensen Audio Grade 47uf 450vdc caps. ( originals where Mallory (date code Sept 1989) 50uf 450vdc)
Chris at Parts Connexion told me the slight difference in values would not matter.
Due to the large size of the case, it turned out to be a very easy job, 30 mins per mono block.
After a quick test, all works fine. No pop's now
Transfiguration Phoenix Cartridge
Devialet D400 Mono Blocks
Audioprana SP/DIF-AES/EBU cable
B&W 803D3 speakers (blk)
Auditorium 23 Cables
Mac Mini Music Server
AudioQuest Diamond USB cable
Raysonic CD-168 CDP (silver)