Finishing(i hope!) my second GSG amp and am measuring 122mV AC in the 6B4G filament supply, resulting(I'm presuming) in ~2.8mV AC at the output of both channels. The ripple is the same bilaterally, @ the filaments and @ the outputs. All other measurements are correct to specified values. So far I have replaced C11-14, and D1-8(NOT easy in a fully populated board) with no change in the measured values. Maybe I'm missing something simple and obvious, but it escapes me at present. C11-14 were originally 16V 10KuF Nichicons, replaced(nothing fancy this time, but, as I said, no improvement) with 50V 4.7KuF Nichicons. C5's are Panasonic 100V 100uF. Diodes are 50V 3.3A Schottky's.
Any help/enlightenment will be much appreciated!
Thanks...