Recently acquired a Tek 422 that may have a problem with the trace
brightness. As the Intensity control is rotated from off (full CCW)
to about midrange the trace will increase in brightness, but from
mid rotation to full CW, the brightness stays the same and the trace
losses focus and has what appears as another trace just slightly
shifted to the left. Is this an indication of a weak CRT, or some
component in the HV supply? Thanks!
