Quote:
Originally Posted by old_coot88
I feel your frustration bro. I might've missed it, but have you checked voltages on:
V118 (6SK7) 1st sync amp ----- pertinent voltages are pins 4, 6, 8 (that's G1,G2, plate)
V119 (6SH7) sync separator --- pertinent voltages are pins 4, 6, 8 (that's G1,G2, plate)
V120 (6SN7a) 2nd sync amp -- pertinent voltages are pins 1 & 2 (that's G1 and plate)
Are those tubes lighting up good? If any are metal, they should be getting warm after a few minutes running.
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I really don't see a smoking gun here except for the lower voltages associated with the reduced 135V line being bled off to another voltage line source.
6SK7 #4 -3.6V #6 96V #8 187V
6SH7 #4 -4.3V #6 104V #8 103V
6SN7a #1 -1.3V #2 68V