I hope you also replaced at least the BIAS supply caps as
well.......... And preferably the LV supply caps too!
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Jim Bo wrote:
I had the same issue with mine.
Pout would start at 140 watts at initial key down, and drift down to
90 watts.
Rebuilt the AC-4 as the plate caps were "leaking" (could only see
"leak" after removing tall "lytics").
Did my own rebuild with two 270 uf, 450 volt caps that I had laying
around.
Pout is now constant. BTW, the rebuild also fixed a sidetone issue.
Look at B+ on AC-4 and see if it drifts down when you key, or just
rebuild the psu for peace of mind.
Jim
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