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wrote in
oups.com:

Traces and readout intensity are sometime very brighter than usual.
When this occurs two out of four neon bulbs located in HV "module"
flashes. These two bulbs are connected at pins 2 & 3 of CRT. I'm also
looking for the tech manual.
Any ideas?

Thks,
Daniel

TEK puts a couple of neon lamps between the CRT cathode and grid to limit
the voltage difference between them to less than ~130v to protect the
CRT;pins 2,3 are CRT cathode and grid.(P1,14 are filaments)

I do not have access to any TEK manuals anymore.

--
Jim Yanik
jyanik
at
kua.net