Reset after battery failure

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michaelclancy
Posts: 7
Joined: Mon Aug 02, 2021 12:48 pm

Reset after battery failure

Post by michaelclancy »

I replaced a battery after failure on a DM42 and get the following screen

Release Keys
[_ _ ] 43 - 00

Press [EXIT]+[F6] to exit

Pressing EXIT F6 in any sequence of on /hold etc has no effect
I''ve changed the battery again and put on USB power with the same effect

any body had this problem or have any idea how to reset the calculator
thanks
michaelclancy
Posts: 7
Joined: Mon Aug 02, 2021 12:48 pm

Re: Reset after battery failure

Post by michaelclancy »

For avoidance of doubt i have tried resetting it using the key on the reverse side without effect
EM41
Posts: 192
Joined: Mon Mar 30, 2020 12:10 am
Location: Overijssel Netherlands

Re: Reset after battery failure

Post by EM41 »

I had a dead battery on my DM41 some months ago. Replacing the battery resulted in crazy behaviour like yours but not the same key combination thing. I let the DM41 without battery for an hour and the problems were solved
HP41C (2x), HP41CV, HP41CX, DM41X β, DM41X, DM42, HP11C, HP48G, HP97
Nissen
Posts: 18
Joined: Wed Jun 02, 2021 6:01 pm
Location: Copenhagen

Re: Reset after battery failure

Post by Nissen »

Maybe it is a good idea to connect the DM42 via a USB-cable to a pc before removing the coin cell battery from the DM42.
73, Nissen
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