05-08-2016, 11:36 AM
(This post was last modified: 05-08-2016, 04:23 PM by Roman Ships.)
I have been rebuilding my Ampeg V-4B ( 1971 I think )
I turned it back on and I believe everything is wired correctly. I am measuring only about 60 V DC at C18 Filter Cap. There are no tubes installed.
This doesn't seem correct. C20 measures fine, and on the neg. terminal it measures the same 60 V DC as that leads to the pos. of the following cap.
Also when measuring the hot lines exiting C17, 325V and 360V per the schematic, they all read B+ ( about 565-ish) will those change when tubes are installed? Or is something else wrong?
Thanks,
I turned it back on and I believe everything is wired correctly. I am measuring only about 60 V DC at C18 Filter Cap. There are no tubes installed.
This doesn't seem correct. C20 measures fine, and on the neg. terminal it measures the same 60 V DC as that leads to the pos. of the following cap.
Also when measuring the hot lines exiting C17, 325V and 360V per the schematic, they all read B+ ( about 565-ish) will those change when tubes are installed? Or is something else wrong?
Thanks,