16 Oct
2018
16 Oct
'18
3:08 a.m.
Can't find it either in any of the X-ref lists I have. As you know already, 1854 are
usually NPN transistors, but around these numbers I see mostly Darlingtons in my
collection. So maybe that's what you have, and why the junctions would test weird.
Marc
On Oct 15, 2018, at 10:21 PM, Josh Dersch via cctalk
<cctalk at classiccmp.org> wrote:
Hey all --
Got an HP 2382A terminal I'm attempting to resurrect. I get no video, no
heater, no high voltage. What I believe to be the horizontal output
transistor appears to be bad, but I'm not sure if this thing contains
internal diodes that might be throwing off my testing attempts. It's
labeled "1854-0900." Anyone know what this actually is? (Anyone have a
service manual for this terminal?)
Thanks,
Josh