Problem with 41C

[heliocrono]

(10-23-2024 10:25 PM)rprosperi Wrote:  Try holding the calculator down pressing firmly/gently on the two outer rails, between the top two rows of keys, and then press the buttons for your testing while maintaining the pressure. If it works while pressing like this, it means one (or both) of the upper posts, or the back of the case (under the feet, where the screws pass thru the sockets) is broken. There are repair options for these problems but step 1 is finding out the cause for sure.

Also, try using other batteries. Even though you think the ones you have are new, one or more cells might be bad or low, leading to shutdown from overall low voltage. Brand new N cells should be about 1.6V or even a bit higher.

I have tried pressing on the two outer rails, in the position mentioned. But nothing happens. I press firmly, making sure not to break the casing, but the screen remains blank. The photos sent by Aurelio give me an idea of ​​the positions.

I have also performed the reverse operation, once there are digits on the screen, I press to see if they disappear, and nothing happens either. I just have to press a key on the top to turn it off again.

As a note, on many occasions, when the calculator is turned on, the word NONEXISTENT appears.