Casio CA 901 game/calculator

[dutchsiberia]

I got this in a watch lot of "dead" lcd watches "for parts/repair".

I just tried two batteries and after some fiddling (I had to isolate one of the batteries from the metal retainer with a piece of plastic) it was alive! All functions work, including the "game" and the weird adjustable alarm pitch :) The display has some bleeding at the right. The case is in a nice shape.





Back :)


Every digit seems to work, despite the bleeding.


Now I have to learn how to play that wretched game

[simone]

Have you tried to push gently the lcd panel?
The game....mmmm...i prefer play with my table version of master mind

[dutchsiberia]

Hi Simone, I'll try that when I have some more time, I spend most of my time soldering a reed switch to a synchronar module :)
I'll try the "gentle pressing" method tomorrow, it worked fine for me with another watch.

[retrowrist]

Hello dutchsiberia,

Recently, I have picked up a replacement LCD for the "134" module, and have a couple of questions:

1) what battery size does it take?
2) How do you you open the caseback?
3) Are the LCD's on this model subject to bleeding? I noticed that the majority of these have bleeding LCDs.

Thank you very much,

- Patrick

[dutchsiberia]

See my answer here
viewtopic.php?f=64&t=7140

And I just put a case opener in the tiny slot you see under the lower left corner (facing the dial) of the caseback and "pop the lid" :)