I was just entering about 10 numbers to try out the extended stack, when the DM42 suddenly stopped responding, with a frozen-flashing screen.
Not responsive to the reset button.
After removing cover and battery (and re-inserting of course) the machine did not come up again, instead showing either a random dotted screen or a blank screen with just one black vertical line.
Now waiting to discharging of capacitators or something like that (battery removed again).
I will post when I know more. Hope I won't have to send it in
DM42 hangs & unresponsive to reset; removed battery, random screen
DM42 hangs & unresponsive to reset; removed battery, random screen
Robbert Jan, MSEE, RPN user since 1976 and a collector for many years I now own all the important ones: HP-35, 45, 55, 65, 97, 19, 21, 25, 34, 10-16, 41, 42, 71, 48, 50, Prime, DM41, DM42, WP43, C47, R47; Project 47 team member https://47calc.com
Re: DM42 hangs & unresponsive to reset; removed battery, random screen
Inserting a fresh battery solved the issue!
Robbert Jan, MSEE, RPN user since 1976 and a collector for many years I now own all the important ones: HP-35, 45, 55, 65, 97, 19, 21, 25, 34, 10-16, 41, 42, 71, 48, 50, Prime, DM41, DM42, WP43, C47, R47; Project 47 team member https://47calc.com
Re: DM42 hangs & unresponsive to reset; removed battery, random screen
Could always try powering it by USB.
DM10, DM10L: 00031 / DM11, DM11L: 00112 / DM12, DM12L: 02074
DM15, DM15L: 11069 / DM16. DM16L: 02001 / DM41, DM41L: 00859
DM41X: 00036ß / 00181 DM42: 3108 / 6084 WP43: 0032
DM15, DM15L: 11069 / DM16. DM16L: 02001 / DM41, DM41L: 00859
DM41X: 00036ß / 00181 DM42: 3108 / 6084 WP43: 0032
Re: DM42 hangs & unresponsive to reset; removed battery, random screen
My DM42 had a similar responce.
I was not warned, that the battery had run out. Changing the battery and loaded a fresh state solved the problem.
Also remember to use good quality CR2032 Cell batteries. The ones usually bought in bulks in supermarkets ain't allways reliable.
All the best
Peter
I was not warned, that the battery had run out. Changing the battery and loaded a fresh state solved the problem.
Also remember to use good quality CR2032 Cell batteries. The ones usually bought in bulks in supermarkets ain't allways reliable.
All the best
Peter
Re: DM42 hangs & unresponsive to reset; removed battery, random screen
You can display the battery voltage in the header, so that you can see when it's getting low and needing replacement. Go to Setup > 4. Settings > 3. Status Bar and check 7. Power Voltage in Header. My experience is that once the battery voltage drops below 2.5 volts, it's time to replace the battery. Also, always connect your calculator to USB power whenever saving the calculator State or programs, or when updating the firmware, because these operations drain the battery significantly.
DM15L, S/N 00548. DM42, SN: 00159. DM41X, SN: 00973. DM32, SN 00054.