DM42 won't show up on PC

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Bob
Posts: 8
Joined: Fri Dec 27, 2019 6:46 pm

Re: DM42 won't show up on PC

Post by Bob » Sat Jan 18, 2020 1:51 pm

grsbanks wrote:
Sat Jan 18, 2020 12:24 pm
No drivers are required.

The calculator has the required code embedded in the CPU and any PC running Windows 98SE or later has usb-storage drivers included.

Did you read the thread that I linked to? My guess is a bad connection due to the position of the USB connector in the DM42 and the microUSB plug on the cable being both close to the tolerance and the connection not being made. Try with a different cable.
Tried 5 different cables.

Bob
Posts: 8
Joined: Fri Dec 27, 2019 6:46 pm

Re: DM42 won't show up on PC

Post by Bob » Sat Jan 18, 2020 1:52 pm

Yep, I read the link. I read it before posting here too.
:)

grsbanks
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Re: DM42 won't show up on PC

Post by grsbanks » Sat Jan 18, 2020 1:57 pm

OK, so we need to eliminate either the PC or the DM42.

If you have a USB memory stick or an external hard drive that connects via USB then try those in the same USB socket as you've been using for the DM42. If they show up in "This Computer" or "My Computer" (depending on the O/S) then the PC is OK. You've tried multiple USB cables and none work, so that would leave the DM42. In this case, please get in touch with Michael Steinmann, michael@swissmicros.com, and let him know what symptoms you are seeing and what tests you have done to conclude that the DM42 is at fault. Meanwhile I'm going to get him to read through this thread.
There are only 10 kinds of people in the world: those who understand binary and those who do not.

TwoWeims

Re: DM42 won't show up on PC

Post by TwoWeims » Sat Jan 18, 2020 2:48 pm

The case of my DM42 was preventing my USB cable from seating fully into the socket. I had to trim a bit of the plastic off of the connector on my cable. It now works 100% of the time.

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Walter
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Location: Close to FRA, Germany

Re: DM42 won't show up on PC

Post by Walter » Sat Jan 18, 2020 10:42 pm

TwoWeims wrote:
Sat Jan 18, 2020 2:48 pm
The case of my DM42 was preventing my USB cable from seating fully into the socket. I had to trim a bit of the plastic off of the connector on my cable. It now works 100% of the time.
Same with mine.
DM42 SN: 00041 Beta
WP 43S running on this device

HP-35, HP-45, ..., HP-50, WP 34S, WP 31S, DM16L

Bob
Posts: 8
Joined: Fri Dec 27, 2019 6:46 pm

Re: DM42 won't show up on PC

Post by Bob » Sun Jan 19, 2020 11:54 am

Yep.
After all this, and trimming 2 cables, 1 finally worked, although I certainly don't feel confident about updating any firmware. . .
Thanks for all your help everyone. It is nice to know that (whatever issues we have with the 'specialist' machines, we band together) :-)

TwoWeims

Re: DM42 won't show up on PC

Post by TwoWeims » Sun Jan 19, 2020 12:50 pm

I have updated firmware several times and transferred files back and forth many times using my trimmed cable.
I have never had any issues. You should have no problems.

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