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my Casio calculator is not working

christel123456

Jan 7, 2023
1
Joined
Jan 7, 2023
Messages
1
hello ,
my calculator (casio) shows me 0 whenever i press any button from the last row .
idk what to do please if someone can advise me
thanks
 

Martaine2005

May 12, 2015
4,932
Joined
May 12, 2015
Messages
4,932
Maybe the graphite or similar has worn off the back of the membrane behind the buttons?.
If so, try a conductive paint. Plenty online for repairing remote controls etc.
Or possibly a cracked PCB or broken trace?.
Open it and look.

Martin
 

bertus

Moderator
Nov 8, 2019
3,304
Joined
Nov 8, 2019
Messages
3,304
Hello,

Sometimes the contact area where the button should make contact is dirty or oxidated.
Have a look inside and posts some pictures.

Bertus
 
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