MontanaWay wrote:Awen wrote:Well, I think I figured out the problem...well, it looks like I have a bad power transformer. The two brown wires (white wires on original Dynaco power transformer) that should be 5v are in fact 46v!
are you REALLY sure about that?.....because it means that your rectifier tube has been getting a filament voltage of 46V!!??!!...instead of the 5V, and would NOT have lasted long!
I think you are maybe measuring the BIAS tapping of the transformer?........
The Bias is correct and is around 55v. Each leg of the 5V wire going to the rectifier tube is measuring 46V AC... I did blow one rectifier tube and fuse when I fist started troubleshooting this. Each time I turn the amp on, I don't leave it on very long. I think the transformer is incorrectly wired internally and has three bias taps instead of the one.....the bias wire is also brown, but it is a smaller gauge than the two other wires, so I know I didn't get them confused.