unprogrammable HP 25

[dmh]

Ok, registers and Last X always return 0 so problem with the RAM chip - thanks :-)

Is it most likely that it needs replacing or could a clean fix it?

I haven't opened it yet but terminals look reasonable and keyboard is pretty good so not sure it's corroded.

(07-22-2021 03:21 PM)Dave Britten Wrote:  Based on Steve's reply, see if you can put anything in the storage registers (and subsequently recall it), and if the last X function works.