Re: HP 49G Symbols stay on Message #3 Posted by James M. Prange on 16 Dec 2002, 10:06 p.m., in response to message #2 by Vieira, Luiz C. (Brazil)
In case it is a problem with corrupted operating system flash, the latest flash (AKA "ROM") and instuctions for installing it are at http://etud.epita.fr:8000/~avenar_j/hp/49.html.
Another possibilty might be that you have a misbehaving library installed. To check for this possibility, do an [ON]&[F4] (both keys together) to get to the "Tests" screen, then hold down the backspace key, press [Q], and release the backspace key after the reboot has finished. RightShift LIB (above the [2] key) shouldn't show any libraries in the menu now, just the ports :0:, :1:, and :2:. If this cures the annunciator problem, it's a matter of finding which library is causing the problem and purging it.
My guess is that it's a hardware problem, but it's certainly best to eliminate software problems first.
Please let us know what you find out.
Regards, James
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