Will do.
On Wednesday, July 22, 2020, 01:21:58 PM EDT, Josh Malone
<[email protected]> wrote:
So, I think I'm seeing entire controllers out (the empty square sections). But
if, as you say, the MENU screen works properly, then I would assume that some
communications is just slightly out-of-spec for the chips. My first suspect
would be failing capacitors - but there are no electrolytics on the LCD PCB.
Perhaps corrosion on the LCD PCB is creating a high-impedance short somewhere?
Have you inspected the unit for corrosion or other damage?
-Josh
On Wed, Jul 22, 2020 at 1:17 PM Stephen Adolph <[email protected]> wrote:
If you have a second M100, it would be interesting to see if the problem
follows the LCD. So, move the entire Top half of the M100 to a second machine
and see if the problem goes with the top half.
On Wed, Jul 22, 2020 at 1:15 PM Stephen Adolph <[email protected]> wrote:
ok this is quite interesting. I'm not sure what to make of that. And you are
sure there is no problem with the "hard reset MENU' screen.
On Wed, Jul 22, 2020 at 12:26 PM Chris Fezzler <[email protected]> wrote:
Here you go.
On Wednesday, July 22, 2020, 11:52:23 AM EDT, Stephen Adolph
<[email protected]> wrote:
a pic of the garbled screen would be great if you can do it.. thanks
On Wed, Jul 22, 2020 at 11:37 AM Chris Fezzler <[email protected]> wrote:
Sorry - typing too fast. Top four lines of the screen.
Yes, mostly garbage all of the time. Except a hard rest will generate a proper
menu screen.Yes, in BASIC the same. But if I type in a test program and hit
RUN the program will indeed run.So the computer is getting the
commands/keystrokes. Just not displaying bottom four lines.
I think it is a component issue.
On Wednesday, July 22, 2020, 09:20:53 AM EDT, Stephen Adolph
<[email protected]> wrote:
Hi Chris,
What do you mean by "the top 4". Do you mean top 4 lines on the screen? I
think so.
So is it correct to say that the LCD bottom 4 lines display garbage at certain
times* not after a (hard) reset - you get a correct MENU display (not just a
RESET but a HARD RESET?)* when you enter BASIC and/or run any software, the LCD
bottom half shows garbage?
I would suggest that you run a memory test.I doubt that you have a fundamental
problem with the LCD system, nor the keyboard system.
good problem!
On Wed, Jul 22, 2020 at 9:02 AM Chris Fezzler <[email protected]> wrote:
I'm trying to troubleshoot what components on the circuit board process
keystrokes and send them to the screen.
The screen and keyboard on my Model 100 are in perfect working order. But only
the top four are processing correctly.
The bottom four are displaying gibberish. But if I type commands in BASIC,
they work. So again, not the keyboard orscreen but components that process the
bottom half. A hard rest will present a perfect menu screen. But upon entering
an app, the bottom four lines are not getting proper signal.
Sorry, I'm not an electronics or computer engineer. Just a hobbyist with a
soldering iron and a willingness to learn.Plan to look at Technical Reference
Manual to see if I can troubleshoot.
On Wednesday, July 22, 2020, 01:15:25 AM EDT, John R. Hogerhuis
<[email protected]> wrote:
On Tue, Jul 21, 2020 at 5:08 PM Chris Fezzler <[email protected]> wrote:
Is there a way to search old Listserv messages so I can research before
embarrass...err...I mean ask a dumb question.
Seriously, would like to research.
How old are we talking?
Gmane was our archive until it went down for a long time. Then it was back up
recently but only accessible through nntp readers. Not sure the status of that.
Our GNU Mailman list itself has an archive which goes back to 2011 when I took
over running the list.
http://lists.bitchin100.com/private.cgi/m100-bitchin100.com/
Or just ask. We Are The Archive.
-- John.
