HELP on TI-59 Module

[toml_12953]

(10-15-2019 08:48 AM)Doctor_Jacek Wrote:  Hi to everyone,

Recently I bought two modules on ebay: Statistics and Real Estate.

When I checked the contacts of the two modules I realized that they were oxidized, I tried to scratch them to remove the oxide.

When I tried the Real Estate module, when I executed the 2nd PGM 01 operation, a fading C appeared on the left.

Same behavior also with the Statistics module.

Once I was able to run the diagnostics on the Real Estate module in a positive way by looking at a number 3 on the display (module number).

I tried to compare the contacts of the Master Module with the contacts of the RE and ST modules, I noticed that in the latter the contacts are smaller.

The Master Module works correctly.

Oxidation and smaller contacts could cause the problem of not reading the form?

I enclose photo contact forms.

I thank you in advance for your suggestions.

The dimmed C means a program is running. How long does the manual say the operation should take? If you don't have the manuals, you can get them here:

Datamath.org

Do the modules pass their diagnostic?

Code:

2nd
PGM 01
SBR =

A single number should be displayed and not flashing. If you have a PC-100 or 100A printer attached, the name of the module should be printed along with the same number shown in the display.