Posts: 3
Threads: 1
Joined: Jan 1970
Hi,
Here is one more thing to check if your calculator doesn't turn on. If the coil springs in your battery pak are tired, sometimes there is not a good contact. Try stretching them a bit so that they give better pressure on the batteries. Another thing, if you take out the batteries for a couple of days, sometimes the calculator resets itself. I have a 41CX and I got it to work after removing a dead Advantage Pak module, stretching the coil springs and snugging up the tiny screws under the rubber foot pads.
Hope this helps!
John
Posts: 145
Threads: 40
Joined: Oct 2005
I have dissasembled the main board and the zebra connector is clean. I have checked all the contacts and they are ok. In fact all the calculator´s inside is perfect (clean, without any corrosion). And after assembling everything again I have found out the problem: battery contacts don´t work properly. The previous owner painted them with silver paint (conductive). It has very good aspect but it seems to lose conductivity due to batteries friction. I have a photo but I don´t know how to attach it
If I place silver paper in each battery contact the calculator works again
Now I know the problem but not the best solution. Does anybody have experience solving this failure.
Thanks in advance
Jon