On Sep 4, 1:23 pm, "Dan Luke" wrote:
wrote:

The time-honored diagnostic is to thwack it with your finger and see
if the display changes.

If that fails, try time-honored diagnostic #2: unplug the unit and plug it
back in to reseat the connectors.

The EDM is a single unit, the display and internals are one piece so
there really isn't anything to unplug and replug in other than the
actual probes, which doesn't appear to be related to the problem.

-Robert