Trusty 32SII dying - should I get the 35S or 50g?

[BartDB]

Hi,

As some have stated, fix it.

It is probably the rubber strip supporting the keyboard connector that has compressed and causing lack of connection to the PCB.

See the following for hints on opening up and photos of the interior.
http://www.finetune.co.jp/~lyuka/interests/calc/hp42s/

Here's the keyboard strip highlighted. Under it you will find the rubber strip that deteriorates. Replace this and it will probably work again.
   

When re-assembling, tighten the screen tabs securely otherwise the display may not work properly.
   

Regards, Bart