8 replies to this topic

[johnnyoc3]

Ive had a casio fx 1.0 plus for a couple of years now (3/4?) and had successfully modded it to use the CAS program. however i haven't used it in a while, about 1 year, and to my surprise one horizontal line of keys not longer works! the line starting with "Ab/c"and ending with "->" does not accept any key presses. all other keys work fine but any key on the "Ab/c" line dont work. This is detrimental to my calculators use since the "(" , ")" , and "->" keys are located there!

i have tried resetting the system components using the commands under "system -> reset" but it has not helped.

years ago i know there was alot of activity with fx program development but i havent really kept up to date with the "scene". I believe there was a program called "touche" (sp) that could detect key presses. so before i go and open up the calc and check for a broken/loose pin is there a way for me to test if its a software/firmware error? i have a link cable so i was thinking if i could download a program to try and see if the key connection is broken or just the software


PS: im a little rusty about which programs were useful tools for transferring to/debuging/hacking the calc. This is the only site i really remember so if someone could point me in the right direction for a tutorial or site of some sort that is slightly up to date with the current state of things would be great.

thanks!

[mintsmike]

Hi there, i would suggest that you remove the batteries from the machine for 2 minutes, then press the physical reset button, with no batteries inserted. Then put a new set of batteries into the calculator and again press the reset button. I do not actually own this calc so my knowledge is limited.

Let me know if this helps

[johnnyoc3]

when you say remove the batteries do you mean the main batteries (4 AA), the backup battery (small circular one) or both?

thanks

[mintsmike]

I would say both, just for added security.

[johnnyoc3]

i tried just removing the main batteries and that didnt fix it. now i removed both batteries and will give it a few hours and try again!

also, while the batteries were out i pressed the reset button since that should clear out any extra juice in the capacitors

does anyone know the name of that add-in program that lets you read in key presses from the calculator. i cant remember and i think it would be realyl useful!

[kucalc]

I'm afraid it actually needs repair. This is common upon AFX's that have not been in use for a while. The same thing happened to my AFX. I wouldn't be surprised if you opened up your AFX and found corrosion and powder on the PCB traces.

[johnnyoc3]

yeah i was afraid of this. neither battery removal methods did anything im going to open it up today at take a look for myself. i can prob figure out the different components of circuit board but is there a picture for reference?

[johnnyoc3]

I'm afraid it actually needs repair. This is common upon AFX's that have not been in use for a while. The same thing happened to my AFX. I wouldn't be surprised if you opened up your AFX and found corrosion and powder on the PCB traces.

well i opened it up today and i couldn't seem to find anything out of place. i'm gunna take a better look tomorrow when i have time but im starting to give up hope on my old baby

[kucalc]

Did you check for any dirt? Try looking under the rubber keypad.