Hi,
A couple of weeks ago my beloved M100 dropped dead in the midst of using it
(I've been keeping a journal). Suffice to say that I was already writing about
something unhappy at the time and the death of the M100 was sort of the
emotional icing on the cake. I only got as far as observing the following
before putting it aside for the night in frustration:
- AA batteries are good (also tried with external DC input)
- Low Battery LED isn't on, and flickers as expected when I cycle the power
switch
- LCD screen is totally blank, doesn't even darken when turning contrast knob
- Beep test in BASIC doesn't work
I had a chance to take another stab at it tonight and lo, it worked when I put
batteries back in it, but promptly died again about ten or fifteen seconds
after powering it on.
VDD and VB are both good, but VEE is -1.4V rather than the expected -5V. I
thought I'd post here to see if anybody has any pointers on a common culprit
for low VEE before I start digging deeper (which is a project for another
evening). I have a funny feeling I've read about someone else having a low VEE
problem, but searching the list messages turned up nothing for me.
jim
