thanks Bill...I'm more than a little frustrated with this schematic.it's got a few obvious errors,and the parts list that goes with it seems to take some liberties...it's also for a 75P6,where my radio is actually a 75P6U..the few times I've seen that issue addressed on the net nobody seems to know what the difference is,or if there even are any...its obviously the same basic design,but there are certainly a few differences mostly in the power supply i think...having to follow wires and then guess occasionally all adds to my difficulty lol
anyway...
i didn't have a .03 cap to try,i did have a .047 tho[schematic or parts list???
hmmmm]...this works..mostly...still with a bit of the buzz tho greatly reduced to really a pretty tolerable level and might be able to be reduced further with some care in installation...i think i do need to try a .03 tho,the larger cap seems like it might be tilting the tone of the radio lower slightly and at high volumes where the buzz used to be replaced by amplifier noise,i now get some mild 60hz hum with it that was never present before...