I had the exact same problem with my 200. After replacing the NiCD on my
NEC and M100 with a super capacitor, I decided to do the same thing with
my 200. But what happened was that after the replacement, the 200
wouldn't shut down. It would show two horizontal lines and there was
nothing I could do except pull power and switch the memory power off.
I suspect there is something going on with your NiCD even though you
have already replaced it. I would check the voltage it is putting out.
Too high and it seems to keep the 200 from turning off.
I run mine without an internal battery. Since all my files are saved to
my phone or laptop, a cold-boot doesn't bother me much. That and my 200
is plugged into a wall wart 99.9% of the time made it an easy decision
to remove the backup battery/super capacitor.
Kurt
On 4/27/2016 7:20 AM, David Anderson wrote:
Hi all,
Before I dive in the M200 troubleshooting process, I thought I'd check
to see if anyone else has experienced this. After many years, I'm the
happy owner of a 200 again. I've replaced the NiCD already.
It worked a few times... but now just shows two horizontal lines
across the screen. When I try to power it down, it's doing something
but doesn't actually power down. I can hear a faint noise as it
struggles, too.
I'm guessing (having read the troubleshooting procedure) that I'll
need to replace some old electrolytic caps, given that they're 30+
years old.
Has anyone else seen this behavior? Anything in particular I should
look for?
Thanks!
David
PS. I started in the M100 world years ago with a Kyocera KC85 I bought
from DAK (I think). If you're an old Compuserve user, you may have run
across the ROM dump I uploaded in the late 80s. I used to have a full
200 setup w/ disk drive and other accessories but it disappeared over
the years. Looking forward to getting back into it: I want to try
interfacing projects via the system bus.
