+- HP Forums (https://www.hpmuseum.org/forum)
+-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html)
+--- Forum: HP Prime (/forum-5.html)
+--- Thread: Some keys stopped working (/thread-12870.html)
Some keys stopped working - MullenJohn - 04-26-2019 02:02 PM
Hi, My HP Prime G1 bought on 8/29/2017 does not work when pressing the following keys on the keypad: 5, 6, (multiply key), Apps.
Also cannot get it out of CAS mode.
Has something like this happened to you?
Any recommendations on a fix?
I have reset it using the small hole on the backside of the calculator?
Thank you - Cheers!
RE: Some keys stopped working - Giancarlo - 04-26-2019 10:45 PM
Hello John,
It happened to me as well a couple of months ago.
I kept the Prime in my jacket for a month in order to use it whenever I had the possibility to do and it is possible that some vibrations disconnected the keyboard connector inside the calculator.
I did a back up, open the display case based on a couple of YouTube videos and replugged the connector.
In reality I didn’t notice that the connector was unplugged; probably it was a matter of fraction of a mm. However as soon as I did it it worked again as new.
The hint came from Tim. I also strengthen the keyboard screws but I was told that the issue was the keyboard connector.
Now it works like a charm again.
The previous thread is here:
https://www.hpmuseum.org/forum/thread-12372.html
Thanks
Giancarlo
RE: Some keys stopped working - MullenJohn - 04-27-2019 05:01 PM
Giancarlo,
Thank you very much for your reply.
Your suggestion worked.
I went to the http://www.youtube.com video ( https://www.youtube.com/watch?v=O0dhnNFSGEQ - it was in French! ) and viewed how to disassemble the HP Prime without damaging it.
Also like you, the two ribbon cables did not seem disconnected.
The first time I tried, I wiggled the ribbon and pressed in the ribbon connectors without removing the protective clear tape over the electronics and the buttons still did not work.
In the second attempt, I removed the protective clear tape and then wiggles the wires and pressed in the ribbon connectors and then functionality returned to the buttons.
Again, thank you for your help.
I hope the ribbon cable will stay connected - Cheers!