Well I have replaced the U500 and the scope is triggering just fine.
However; when I changes Volts/Div scale without changing the input signal the display jumps off center. If I recenter the display and measure the amplitude and frequency it is accurate. If I switch scales again I have to recenter the the display. This happens no matter which channel I am using.
I have tried to search the forum for possible answers but I am at a loss as to what this is... Is it a problem with the horizontal or the vertical calibration or the CRT or my eyes?
Any suggestions would be appreciated.
Its always something.
John w.
