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PAS-2/3 Schematic - PC5 and PC6 - Where is F+, F-, and B+

PostPosted: Sat Jan 23, 2016 6:44 pm
by deathman68
On to the next saga for my PAS2. I purchased the z-mod upgrade from TubeNirvana and the cap board upgrade from Triode. Unfortunately, the triode board references the original PC5 and PC6 eyelets in their schematic which donĀ“t match those for the TubeNirvana PCBs. Can anyone with knowledge of the original PCBs or just good at reading schematics (schematic http://www.tubes4hifi.com/Dyna%20PAS3%20manual.pdf confirm if my assumptions are correct?:

PC5
Eyelet 16 = B+
Eyelet 18 = F+
Eyelet 19 = F-

PC6
Eyelet 14 = F-
Eyelet 15 = F+
Eyelet 16 = B+

Re: PAS-2/3 Schematic - PC5 and PC6 - Where is F+, F-, and B

PostPosted: Sat Jan 23, 2016 7:16 pm
by paart
The Dynaco eyelet functions that you posted are correct. Keep in mind that the tube heaters are wired in series, so the original voltage that appears at E-18 (PC-5) and E-15 (PC6) is +22-24VDC, not 11-12VDC.