After a few weeks of inactivity, I recently powered up my HP 5371A and
discovered the display is not working. Everything else is working, and I can
print the results that normally appear on-screen.
I've checked the supply voltages to the CRT driver card A17, and the horizontal
sync, vertical
Hi Steve,
I have a 72A and was wondering about the
same thing. My unit works well, but the display
looks weak. The raster moves around sometimes. If
the CRT itself is bad, those can be had used from
various surplus tube dealers at probably not too big a hit.
There is a
New CRT's for many of that era of HP instrument
can be had pretty economically too.
If the raster moves around rather jerkily then
give the unit a good suck out with a vacumn
cleaner! Use a nice clean dry toothbrush to look
for collected gunge particularly around the spark
gaps on the CRT
