DM-15, reset fault
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- Posts: 564
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DM-15, reset fault
When I press the RCL key, the bottom of the ENTER key, the 0 key or the . key, the calculator resets. This only started after I changed the battery. HAs anyone else observed this behaviour and what might I do to fix it?
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- Location: Germany
Re: DM-15, reset fault
4 keys in a row side by side. Seems to be a keyboard matrix problem. If it was right from the beginning I would guess a short cut on calculator's mainboard.
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- Posts: 564
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Re: DM-15, reset fault
Took the back off, thinking maybe it was too tight and might be accidentally triggering the reset button, but the same behaviour happens intermittently with \Sigma+ and . even without the back on, carefully holding at the sides.
Ideas?
Ideas?
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- Posts: 564
- Joined: Mon Apr 24, 2017 8:38 pm
Re: DM-15, reset fault
Video of the problem here: https://youtu.be/PChVVhJLD4M
Happens with the ENTER key too when in the housing.
Happens with the ENTER key too when in the housing.
Re: DM-15, reset fault
On top of the battery holder there must be a foam pad, otherwise the positive pole makes contact with the housing, which is connected to the negative pole of the battery. Please check.
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Re: DM-15, reset fault
any chance the battery holder connects to the housing? Is it also possible without housing?keithdalby wrote: ↑Wed Jul 05, 2017 1:29 pmHello Michael,
Yes, there is a foam pad on the battery holder
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Re: DM-15, reset fault
I don't think so, but I took the battery out to investigate further and since putting the battery back in I've not been able to reproduce the faulty behaviour. I don't know whether it was a software or a hardware issue, but it is resolved now anyway.
Thank you for your help.
Thank you for your help.
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- Posts: 564
- Joined: Mon Apr 24, 2017 8:38 pm
Re: DM-15, reset fault
Ah, started doing this again. I'll take a screwdriver to it later
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- Posts: 564
- Joined: Mon Apr 24, 2017 8:38 pm
Re: DM-15, reset fault
Yep, battery had slipped. Might tape it in place next time, but easy fix.