HP-71B battery drain with no extra RAM or ROM

[TASP]

Not trying to be a twerp, but make sure we've ruled out some things.



Replacing all 4 batteries at same time with 4 matching fresh new ones ??

No battery corrody crud in the compartment ??

Terminals bright and shiny ??

You're the only one with access to device, and use of it ??

No modifications to your 71 ?? (just read an article about hardwiring an ultrasonic range finder to one, LOL)

I can't recall how the on board clock/alarms work, is it like the 41 with the ability to 'wake up' and do things at specific times ?? If so, is it ??

{Chuckle} do you like playing with the on board beeper a bunch (I know I did) ??