R2: 101.1k ohm
R3: 99.3k ohm
R5: 99.1k ohm
R6: 100.1k ohm
I'm not sure if that little of a variance would cause issues? Note, I am using a 10y old Sears Craftsman auto-ranging multimeter so I am not 100% confident of its accuracy but it appears to get close.
Hoping the values for the following will be beneficial:
R7: 50k ohm (should be 100k?)
R8: 10.02k ohm
R9: 246k ohm
R10: 3.2k ohm
R11: 586k ohm (low should be 620k?)
R12: 609k ohm
R13: 745k ohm
R14: 277k ohm
R15: 1.08
R16: 1.08
R17: 428k ohm
R18: 0.5M ohm (should be 1M ohm? <-smoking gun??)
R19: 509k ohm
R20: 741k ohm
R21: 265k ohm
R22: 15.86k ohm
R23: 62k ohm (should be 100k?)
R24: 4.6k ohm
R25: 15.9k ohm
R26: 3.86k ohm
While I have been gentle with the board, last time I checked the last resistor, the shielded link "N" disconnected.
After looking closely at the pad, there is very little of the wire sticking up and possibly a weak solder joint?
Could that have been the issue? According to the schematic, "N" is signal in? Does that indicate if it was a weak connection it could result in no tube voicing/gain/no sound etc? I might try to solder it back and see if it does anything but I will wait for your analysis MJMP
Thanks!