|Re: HP41C power problem|
Message #3 Posted by Randy on 30 Jan 2007, 8:41 a.m.,
in response to message #1 by Steve Budd
Put the soldering iron away...
It is very easy to send a 41 into la-la land by lowering the internal voltages and causing memory corruption. The rechargeable battery could have been shorted such that the 41 would little to no voltage even with the charger connected.
You probably just jumbled its tiny little brain. Try clearing memory and it should recover.
Press and hold the backspace key.
Press and release the ON key.
Release the backspace.
You should see MEMORY LOST.
If that doesn't work, try removing the batteries and reinserting a few times, try the reset after each attempt.
Here are a few more reset techniques
As for the previous post:
Please note that a very common problem is internal corrosion or bad contact of the "zebra connector" between the keyboard and the logic board.
While this might be correct for units that have suffered a battery leak, that is certainly not the case here. The 41 worked one minute, not the next. Why assume it corrosion? IMO, common sense says otherwise. Besides, what if the unit is a halfnut - what then?
Edited: 30 Jan 2007, 8:47 a.m.