VACUTRACE Vacuum Tube Curve Tracer
15
Troubleshooting
Problem
Possible Causes/Solutions
Does not turn on.
Power cord not plugged in or fuse blown. Power switch
on rear panel must be turned on.
Tries to turn on but does
not operate correctly.
AC input voltage selection on wrong setting.
LED display does not
work.
VacuTrace must be in Hold mode.
Curves not generated.
Faulty tube. Oscilloscope not in XY mode or set up
improperly. Heater not warmed up yet. VacuTrace in
Stby or Hold modes.
Oscilloscope display is
backwards.
XY cables are reversed.
Curves keep
disappearing.
VacuTrace is in an overload condition, lower the plate or
screen voltage or remove fault.