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Duane Hess · (This post was last modified: 03-03-2023 11:48 PM by Duane Hess.)

(02-28-2023 01:51 PM)John Garza (3665) Wrote: .........................
... omitted ..........

the battery would drain to ground through it, thereby causing heat ??

-J

* EDITED *

From your posts, it appears you've found a solution. However, no display, low battery LED only, heating and battery drain is similar to the following thread, so thought mentioining it, due to similarity, might be useful to someone:

https://www.hpmuseum.org/cgi-sys/cgiwrap...read=17322
(note comments by Tony Duell)

and a related post where, depending on the service manual you use, some items are (erroneously) labelled differently:

https://www.hpmuseum.org/forum/thread-16655.html

The posts don't mention the transistor getting hot (Q2?) but the big resistor on the lower-right of your 1st picture -- the resistor with the yellow, purple, gold bands.

Thought I would mention it for whatever its worth.