Need some input from users of this Power transformer.
What do your voltages look like? I scratch built a 70 using Shannons board a couple years ago, and all the voltages where through the roof!
The 6.3 winding was 7
The 5v winding was almost 6
The 360 winding was 400v!!!!!!!
It worked ok but I couldn't resolve this issue. I was afraid I was ruining the tube heaters so in the closet it has gone for 2 years now. I'm ready to build a 12B4 preamp now, and need to resolve this issue.
On some of the forums it was stated that the old Dyna tranny expected 115 Mains and I had 120, so that was the issue, and I should use a Variac.
Well thats doesn't seem right because no one else seems to have to do that? The Dynaparts owner blamed it on the my mains too. I think is that this tranny is defective and I will have to shell out another hundred for a transformer, and partially rebuild this amp.
Is my thinking right here or have I missed something? Waht could cause such high voltages other than a bad transformer? My mains is only 2% high, but the secondary voltages are over 10%