I got my HP 50g today and got at once some problems. This is my first calculator, so I am not specialist. First everything went fine, but suddenly some operations stopped to work. Now at least following operations do not work, STAT, NUM.SLV and TIME. First they worked ok.
I thought, that it could have something to do with display, because there is now HLT in front of ALG. I don´t know, what that HLT means or how it got there, but first on the display was only ALG.
To get rid of the HLT annuniciator please press (after the "@" some comments of mine):
@entering the PRG environment @going to the last 3 softkeys @choosing RUN softkey @issuing the KILL command
Now the HLT should be gone... It was there to remind the user that some operation or environment had been "suspended" - intentionally or not ;-)
The above assumes that you set flag -117 (Soft MENU), by pressing , then until the flag 117 is highlighted, then to set it.