DM42-back cover refuse to come apart for battery replacement

Discussion around the SwissMicros DM42 calculator
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daZZa
Posts: 3
Joined: Sun Mar 29, 2020 10:57 am

DM42-back cover refuse to come apart for battery replacement

Post by daZZa »

Hi everyone,

When I tried to replace battery for the first time-2017 and,
after removed back two screw the cover refuse to come apart.

I'm at a loss:
Is there something I'm missing or doing something wrong?
Any good tip? :|
Last edited by daZZa on Sun May 28, 2023 6:28 am, edited 1 time in total.
I own too many calculator's to list for now. ;)
ctrclckws
Posts: 173
Joined: Sun Feb 17, 2019 4:30 pm

Re: Back refuse come apart-DM42

Post by ctrclckws »

Make sure you don't have a cord plugged into the USB slot.

Separate the back from the front from the top of the device.
There are some keyed slots in the bottom edge, so the cover doesn't just pull off.
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
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anetzer
Posts: 54
Joined: Tue May 02, 2017 8:31 pm

Re: Back refuse come apart-DM42

Post by anetzer »

daZZa wrote:
Sat May 27, 2023 6:22 am
Is there something I'm missing or doing something wrong?
This here is the official Swissmicros Tear Apart video

https://youtu.be/31nGiNef2KY

Should tell you all you need…
daZZa
Posts: 3
Joined: Sun Mar 29, 2020 10:57 am

Re: DM42-back cover refuse to come apart for battery replacement

Post by daZZa »

I've seen the video and the DM42 cover don't fall away like that,
both front and back stick together refuse to come apart.
I own too many calculator's to list for now. ;)
rprosperi
Posts: 1703
Joined: Mon Apr 24, 2017 7:48 pm
Location: New York

Re: DM42-back cover refuse to come apart for battery replacement

Post by rprosperi »

daZZa wrote:
Sun May 28, 2023 6:40 am
I've seen the video and the DM42 cover don't fall away like that,
both front and back stick together refuse to come apart.
Since you can see in the video how it should open, separating at the top, I suggest using a spudger, Popsicle stick, or similar soft material tool (worst case a small flat screwdriver tip ti slide into the slot where upper and lower case edges meet on the top of the unit to "crack" the seal. As it has not been opened in many years, it has simply become slightly stuck and once you crack that seal, it will come apart easily.

Good luck and please report your results.
--bob p

DM42: β00071 & 00282, DM41X: β00071 & 00656, DM10L: 071/100
HPMike
Posts: 439
Joined: Fri Jul 21, 2017 11:01 pm
Location: DFW, Texas

Re: DM42-back cover refuse to come apart for battery replacement

Post by HPMike »

I'd recommend using a jack hammer.
DM15L, S/N 00548. DM42, SN: 00159. DM41X, SN: 00973. DM32, SN 00054.
daZZa
Posts: 3
Joined: Sun Mar 29, 2020 10:57 am

Re: DM42-back cover refuse to come apart for battery replacement

Post by daZZa »

Hi guys,

I just notice I didn't reply back with the results after watching suggested video.

When you look at the main housing and the thinner back plate, the screw hole alow you to push
a thin plastic tool against the thread and at the same time holding or puling back the back plate.
In this way I gained enough pressure to pop off the back plate and replaced the battery.

In some way It may be helpful to other users.
Thank you for all the reply . 8-)
I own too many calculator's to list for now. ;)
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ijabbott
Posts: 253
Joined: Fri Dec 15, 2017 2:34 pm
Location: GB-MAN

Re: DM42-back cover refuse to come apart for battery replacement

Post by ijabbott »

daZZa wrote:
Sun Jun 18, 2023 1:22 pm
Hi guys,

I just notice I didn't reply back with the results after watching suggested video.

When you look at the main housing and the thinner back plate, the screw hole alow you to push
a thin plastic tool against the thread and at the same time holding or puling back the back plate.
In this way I gained enough pressure to pop off the back plate and replaced the battery.

In some way It may be helpful to other users.
Thank you for all the reply . 8-)
You shouldn't need to do that. After removing the screws, you should be able to lift up the top edge of the back plate and exert a small amount of force towards the bottom edge to disengage the three slots on the bottom edge of the back plate from the mating plastic protrusions on the front half of the calculator.
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