JMP 50W V3 Voltages

[guitarist1977]

Hi All,

I have completed a build of jump 50 watt, lead spec. Everything seems to be all right, however there is one thing that is not clear to me.

I measure voltages and all of them are in line with the voltage chart in the kit instructions, except for voltages on V3.

Chart shows that
V3 pin 1 = 208V and V3 pin 6 = 200V.

I measure
V3 pin 1 = 176V and V3 pin 6 = 170V

What could cause this discrepancy?

Thanks,
Alex.

[guitarist1977]

It was bad tube. Changed to a different one and everything was back to normal.