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Brad Barton · (This post was last modified: 09-30-2015 04:58 PM by Brad Barton.)

(09-21-2015 03:48 PM)Harald Wrote: Edit: The issue has somewhat changed. I now have a non-programmable 25C. I have checked a couple of functions and they work, but whatever I enter in program mode, all I get is "13 00".
Is program memory located in one of the chips and the other one is for all the rest?

I get exactly this response with a 25 (non-C) that Geoff helped me repair at HHC2015. It will register the shift keys in PRGM mode, but as soon as I finalize the program step I get 13 00. Reviewing the program lines shows the same code, although all 49 lines are visible. Also LastX returns zero, just like yours.

It sounds like a bad RAM chip like yours. I may have to get one of PANAMATIK's ACT's to get it back to working condition, unless I find a bad solder joint or similar.

EDIT: Mine doesn't have the same RAM chips as yours being the non-C model. A bit of a different layout.

Brad