Hello guys,
I just found this forum by coincidence while looking for potential fixes for my Texas Instruments TI-89 calculator.
The issue I am having is that I didn't use the calculator for several years. Luckily, I didn't leave the main batteries in the compartment.
However, when I tried to put new batteries and turn it on again, the screen is very dim.
What I mean is that the calculator actually turns on, but I need to look from a specific angle to see anything, and then, if I open any of the F menus, then almost the whole image is lost.
I already checked the usual problems for these calculators, like the rusty contact pads or the ribbon cables.
One curiosity is that if I remove all batteries, and then put them back, and switch it on, for a second, the contrast of the screen is normal, but then it dims, and is the same as before.
Have you ever seen such behaviour before? If so, can you think of a way to solve the problem?
Thanks!
S.
I just found this forum by coincidence while looking for potential fixes for my Texas Instruments TI-89 calculator.
The issue I am having is that I didn't use the calculator for several years. Luckily, I didn't leave the main batteries in the compartment.
However, when I tried to put new batteries and turn it on again, the screen is very dim.
What I mean is that the calculator actually turns on, but I need to look from a specific angle to see anything, and then, if I open any of the F menus, then almost the whole image is lost.
I already checked the usual problems for these calculators, like the rusty contact pads or the ribbon cables.
One curiosity is that if I remove all batteries, and then put them back, and switch it on, for a second, the contrast of the screen is normal, but then it dims, and is the same as before.
Have you ever seen such behaviour before? If so, can you think of a way to solve the problem?
Thanks!
S.