dan40
Friend of Leo's
@cottontails1959 ...I know that anytime I have experienced redplating in a tube amp, the first thing that alerts me to an issue is a steadily increasing hum that continues to grow louder as more current is pulled through the tube.
I was also wondering if perhaps the primaries on the new OT were backwards. This happens a lot in new builds or when swapping an OT. There is a 50/50 chance that the wires attached to the sockets will be correct. In most cases, the amp emits a loud squeal when they are backwards but in some cases your amp may simply act strange or possibly redplate. The fix is easy...just unsolder the wires on the sockets and swap them. In your case, if the amp sounds good and the tubes appear to be fine then you most likely have the primary wires correct.
Edit: I forgot to mention that this only applies to amps with an NFB circuit. After looking at your schematic again, your amp does not employ nfb so you have nothing to worry about.
I was also wondering if perhaps the primaries on the new OT were backwards. This happens a lot in new builds or when swapping an OT. There is a 50/50 chance that the wires attached to the sockets will be correct. In most cases, the amp emits a loud squeal when they are backwards but in some cases your amp may simply act strange or possibly redplate. The fix is easy...just unsolder the wires on the sockets and swap them. In your case, if the amp sounds good and the tubes appear to be fine then you most likely have the primary wires correct.
Edit: I forgot to mention that this only applies to amps with an NFB circuit. After looking at your schematic again, your amp does not employ nfb so you have nothing to worry about.
Sweet!
