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#4
02-13-2008, 04:35 AM
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Hi,
the power supply with the 5U4 is working properly. All the B+ voltages are in correct values. Even with 50 Hz, there is only a little hum in it, less than I have expected. I have replaced the booster capacitor, but without success. The difference of the cathode voltage related to the grid voltage of the 6BG6 is only 8v. It should be 20v. In the attachment you find the schematics with the recent readings and a screenshot. Any suggestions? - Eckhard 
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