DM42 works with USB but not battery

If you're having problems with the hardware of a DM42, post about them here.
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dfnr2
Posts: 1
Joined: Mon Jun 12, 2017 9:55 pm

DM42 works with USB but not battery

Post by dfnr2 » Fri Apr 27, 2018 7:53 pm

I got my DM42 in February, and it worked great. It's been in a box (off, of course) for March and April while I moved my office, and I just checked it out again. The calculator would not power up without USB attached. With USB, it operated just fine.

I removed the battery, which read near 0V. I placed a new good CR2032, which read 3.1V, but still no activity when I press ON. I tried resetting the calc via the reset button, but nothing. Again, the calc works when USB is attached.

Has anyone seen this before? Is there a simple fix?

Thanks,

Dave

lescook99@gmail.com
Posts: 1
Joined: Fri Jun 22, 2018 1:37 am

Re: DM42 works with USB but not battery

Post by lescook99@gmail.com » Sun Jun 24, 2018 4:10 am

Am having the same problems with batteries. Michael from Swiss Micros told me to update to firmware to 3.5. Did so but the battery voltage falls from 3v to low 2's within say a day. Wondering whether you found a solution to the problem? Thanks Les Cook (Australia).

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