DM15L keyboard faceplate is separating

Discussion of hardware issues related to the DM1x/DM41. Please ensure that you specifiy whether the issue is related to a credit card size unit or a "Voyager" unit (DM1xL/DM41L).
Posts: 14
Joined: Sat Sep 16, 2017 6:38 pm

Re: DM15L keyboard faceplate is separating

Post by WillMarchant » Sun Jul 28, 2019 10:59 am

find some thin round material such as the bodies of q-tips or thin food skewers and cut some lengths that will nest between the keys but cover most of the length of the faceplate.

I then used a couple of ratcheting clamps, although a book might do, to hold the faceplate in touch with the body of the calculator.

I found that you needed some gentle heat to then finish the adhering process.

My brand new 16L had black spots in the display and tech support suggested I heat it in the car while sitting in the sunshine. That worked well. And I had good luck with that technique again to get the faceplate to stick.

YMMV, and I suggest an email to tech support first...

Posts: 2
Joined: Sat Jul 27, 2019 3:56 am

Re: DM15L keyboard faceplate is separating

Post by CmdrSpock » Wed Jul 31, 2019 4:25 am

It looks like my faceplate issue is gone now, with some help from Michael. I didn't even need to wait for a replacement part or unit. He explained that some foam pads added in a recent batch were too thick, bending the keyboard up slightly and preventing the plate from adhering to it. Here's what fixed the issue for me:
  • I opened up the calculator, removed the foam, and closed it back up.
  • With the faceplate off, I pressed the keyboard down carefully on the affected side.
  • I cleaned the space between the keys with a cotton swab and isopropyl alcohol to remove any dust or old adhesive stuck there.
  • I added a small amount of cyanoacrylate adhesive ("super glue") to the back of the faceplate, in a grid pattern.
  • I put the faceplate back onto the calculator without applying any pressure.
  • With some cotton swabs placed on top of the faceplate, between rows of keys, I put a couple of books on top to apply constant, even pressure to the faceplate. I left it that way for three or four hours.
The books came off roughly two days ago, and the faceplate hasn't moved. Using the calculator hasn't prompted the faceplate to pop up again, either. I didn't have any luck with the "book method" before removing the foam that was bending the keyboard slightly, so I'd suggest that anyone else with a similar problem check for keyboard shape issues before trying to reattach the plate.

Hats off to Michael for the helpful DIY repair instructions. We're lucky to be able to speak directly with the calculator designers about these kinds of problems—I suspect that with most companies, this would involve a long, unreliable mail-in repair process.

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