HP-50G Excessive Battery Drain / Fix?

[HrastProgrammer]

(06-06-2015 04:27 PM)jebem Wrote:  So far, the affected calculators shows older manufacturing dates. Yours should be from 2007, right?

I wonder if this issue is related to older firmware releases, that didn't put the processor in deep sleep, for instance.

This problem is not related to the firmware because my piece of chinese crap is CNA00301073 (this should be year 2010, right?) and has ROM 2.15 installed. It's a fault on the PCB and it could be that a CPU doesn't enter a deep sleep when turned off (edit: this doesn't explain 24mA idle current in my case) but I doubt there is anything we can do about it.

After 10 years of ignoring all new HP calculators (my "cash register" 49G+ from 2003. is the biggest piece of electronic junk I have ever seen) I had a chance to work with 50G and I actually liked it to some extent - bigger display and 2x speed compared to 48G, and a better keyboard than 49G+, work very well for my HRAST BASIC. But this (obviously rather common) problem really pissed me off.

That said, I will buy another new 50G (so I can have it fixed under warranty if needed) because I can get it for cheap and I need a calculator "to go" but I didn't change my opinion about it that I wrote almost 12 years ago:

http://www.hrastprogrammer.com/hp49gp.htm

And my 4x48GX certainly don't go anywhere, especially after I opened a 50G because it doesn't look like made by HP at all. I have an opened 48G+ side by side and they are like night and day from inside (and outside, for that matter) ...