Identifying TO-3 w/HP house numbering

On 16 Oct 2018, at 3:24 pm, Curious Marc via cctech <cctech at classiccmp.org> wrote: Forgot to mention, I have a 2382A that works (affectionately known as the "Munchkin" terminal). I could measure some stuff in mine for comparison if that could help out. For the HP curious, the 2382A makes an appearance at the end of one of my videos: https://youtu.be/GLkhcDAOVPo?t=19m50 It is very cute (I think) ;-) Marc > On Oct 16, 2018, at 12:08 AM, Curious Marc <curiousmarc3 at gmail.com> wrote: > > 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