Okay, probably the multimeter then. When I have a new one I will post the results again. The measurements where made with one 300B broken, maybe this also has an impact?
Also check you grounding, if you have a loose connection/bad solder joint it could cause erratic voltage readings.
That's safety Earth and looks fine - I'm talking about throughout the schematic (not familiar with this specific kit) where different components are connected (referenced) to ground, you need to make sure all those joints/connections are solid so you don't have any leakage. You should also have a connection from ground to your metal chassis, linking the board to your safety Earth. This connection is often part of your power supply.
according your testing, your reference voltages are too high.. this is the main reason the tube to cuase your tube shorter life..
But in the new measurements I’ve posted I have 160V at tp32, which according to the manual is the right voltage
You told me you will have a new multimete
I do not have any new reading from your new multimeter
I do not have any new reading from your new multimeter
I don't know if you can see the last pictures of my measurements with the new multimeter that I posted, but I decided to solder the whole amp again. I've just finished the main circuit board and these are the measurements I got (these are with the left 300B tube broken):
tp1: 0.8v
tp2: 0.8v
tp3: 96v
tp4: 95v
tp5: 0v
tp6: 0v
tp7: 8.7v
tp8: 8.7v
tp9: 165v
tp10: 163v
tp11: 220v
tp12: 221v
tp13: 332v
tp14: 332v
tp15: -41v
tp16: -76v
tp17: -46v
tp18: -79v
tp19: 404v
tp20: 380v
tp21: 5v
tp22: 4v
tp23: 404v
tp24: 382v
tp25: 0v
tp26: 2.9v
tp27: 6v
tp28: 18v
tp29: 408v
tp30: 404v
tp31: -99v
tp32: 164v
tp33: 12.6v
tp34: 60v
tp35: 6.3v
tp36: 6.1v
tp37: 12.4v
tp38: 301v
tp1: 0.8v
tp2: 0.8v
tp3: 96v
tp4: 95v
tp5: 0v
tp6: 0v
tp7: 8.7v
tp8: 8.7v
tp9: 165v
tp10: 163v
tp11: 220v
tp12: 221v
tp13: 332v
tp14: 332v
tp15: -41v
tp16: -76v
tp17: -46v
tp18: -79v
tp19: 404v
tp20: 380v
tp21: 5v
tp22: 4v
tp23: 404v
tp24: 382v
tp25: 0v
tp26: 2.9v
tp27: 6v
tp28: 18v
tp29: 408v
tp30: 404v
tp31: -99v
tp32: 164v
tp33: 12.6v
tp34: 60v
tp35: 6.3v
tp36: 6.1v
tp37: 12.4v
tp38: 301v