Recover from bad erase

[John Galt]

(03-09-2015 04:14 AM)cmumford Wrote:  Sorry, my post was originally confusing. I didn't follow the WP 34s upgrade procedure, and instead used the first time erase procedure (short two pins, etc.). Batteries should be OK, as I haven't left them in for more than 60 seconds at a time.

Though it completely unnecessary to do so once it has been flashed, there is no harm in erasing the calculator again. Whatever is causing the problem, that's probably not it.

It's difficult to determine if the calculator is in fact "dead" or merely appears so. The only confirmation of "non-dead" status that I know of would be to determine its current consumption while it is "on". In that state ("on" but with no firmware to run) it draws approximately 8 mA.

If its power state is unknown you can power it "off" by pressing its reset button. (edit to add: Barry's description of the two "apparently dead" states is a most elegant one.)

Quote:So I did what another user here did.

I'm not sure what you're referring to. Is there a post you can refer us to?