DM42 rattles

If you're having problems with the hardware of a DM41X or DM42, post about them here.
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apak63
Posts: 1
Joined: Mon Feb 12, 2018 1:46 pm

DM42 rattles

Post by apak63 »

Received my DM42 in good order and am very impressed. One thing is annoying me however. When i turn the machine there is a rattling noise inside the calculator as if there is something loose. So i am a bit worried if this will create problems in the future.

Is this a known issue and if so is there something i can do to resolve it.

with kind regards
grsbanks
Posts: 1122
Joined: Tue Apr 25, 2017 11:23 am
Location: Preston, Lancs, UK
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Re: DM42 rattles

Post by grsbanks »

Hi there. Glad you're enjoying your DM42 :)

The rattling is something that hasn't been reported before. I would suggest you remove the rear cover by unscrewing the two screws at the top and gently prising the cover away from the front part. Then examine the innards to see if there is something visibly loose. There shouldn't be!
There are only 10 kinds of people in the world: those who understand binary and those who do not.
Boub65
Posts: 231
Joined: Tue Sep 12, 2017 4:34 pm
Location: Rabat, Morocco

Re: DM42 rattles

Post by Boub65 »

Hi,
Same for me today.
Ratteling noise inside the newly received DM42...
I opened it, and found one of the B screw completely loose!

Every thing is ok now...

Sincerely,
Boubker.
Sincèrement, Sincerely, 73,
Boubker

DM15L, DM41L, DM42 #00855 (domes upgraded), DM41X #00707
HP48SX (with dark screen), HP42s, HP32SII (1990 with fraction bug), HP41C/CV
TI-89 titanium, CASIO fx-cg50 and Numworks (to play with micropython)
elgarak
Posts: 24
Joined: Thu Mar 25, 2021 1:47 pm

Re: DM42 rattles

Post by elgarak »

Same thing happened with mine.

Fortunately, it's serviceable hardware and an easy fix.
reavy
Posts: 101
Joined: Tue Feb 06, 2018 9:08 pm
Location: Phoenix, AZ

Re: DM42 rattles

Post by reavy »

FWIW, I have noticed that each of my DM-sized and Voyager-sized units had loose screws on the inside when I received them. A quick disassembly and tightening of the screws fixed things up very easily.
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