Re: [M100] M100 only displays black blocks
Hi again! John R. Hogerhuis wrote: > That doesn't always do the trick, if it's crashed it will ignore the > keyboard. Meanwhile the "memory power" NiCd keeps the corrupt zombie RAM in > its corrupted state. Thanks for the advice John. It actually unfroze it but only for a couple of minutes during which the M100 did a few weird things, most notably removing the BASIC entry from the menu. After it got stuck again, I tried to use the memory power switch again, while (trying to) shot a video of the result: https://youtu.be/LbVGxcP0OpA I apologize for the shaking camera and... for the unexpected visit and support of my cat :o) As you can see, every time I power cycle the M100 or press reset, something different happens. BASIC is missing, but it seems I was able to open TEXT and create a text file. Most of the time, parts of the menu display are missing, or replaced by black blocks, and every now and then the M100 froze after beeping or displaying some prompt text like "FILE TO UPLOAD?". After reading the "Recovering an unresponsive laptop" page, I made a last attempt leaving the memory power switch off for 15 minutes (I only waited 30 seconds on my first attempts). It didn't help. > Since it only took a months to corrupt your RAM I would also be suspicious > of the internal NiCd. If you haven't replaced it chances are it's 20 some > years old and needs replaced. According to its previous owner, this M100 was recapped and the NiCd battery was changed about 2 years ago, but I'll look inside and try to find something wrong (I'm not that good with hardware...). Fugu ME100 wrote: > Must be the fall season?.. Sorry to read this :o( Did you try the memory power switch trick? Eric
Re: [M100] M100 only displays black blocks
Must be the fall seasonŠ.. My M100 just did the same thing while in use on A/C power, the picture looks almost identical apart from the white block and it only has two bands. The NiCd has been replaced and a cold reset etc did not change the locked condition. It seems to be stuck in that screen state. It looks like the screen is not getting reset when powering up, the lack of beep generally means the boot process is locked waiting for the screen to respond. Debug time again it would seem :( On 27/9/19, 6:53 PM, "M100 on behalf of Eric LK" wrote: >Hi, > >I usually use my M100 at least once or twice a week but I was away for >almost a full month, and when I turned it on yesterday, it decided to >take a break :o( > >When I turned it on, it was OK for about 3-4 seconds (the time for me >to look at the menu clock, and to check on my watch it was still on >time) and then the screen become white with a few black lines (notably >the first and last lines). > >I pressed a few keys, hoping for a refresh problem, and then used the >RESET button, which cleared the screen (I could still see the white >pixels when turning the contrast dial all the way up though). >I tried a few time to power OFF/power ON, or to do a cold reset >(Shift+Break+RESET) but the result didn't change: Every time I got >either a totally white screen or a white screen with a few black >blocks (here is a picture: >https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fpics.lefa >uve.org%2FM100-Blocks.jpgdata=02%7C01%7C%7C0a41c556408b42a62d7008d743 >b6a089%7C84df9e7fe9f640afb435%7C1%7C0%7C637052323959256042 >;sdata=qhcaLPO7W3w2gT4TwJuQPxvLYYc3lm9H%2F9aP5H4tvDs%3Dreserved=0 ). > >I tried to press ENTER + beep + ENTER to check if only the display was >affected but I got no beep. > >I also tried to remove the REX but it didn't have any effect at all. > >I checked the batteries (5.5V) and tried new ones. Still no changes. > >Any idea what I should try next? > >That was my "good" M100, so I really hope I'll be able to fix it. >Eric > >PS: The whitish square visible on the picture was already there before >the problem. It's usually clearer than the rest of the screen, but the >text is still visible (probably one of the LCD controllers about to >die...).
Re: [M100] M100 only displays black blocks
"I tried a few time to power OFF/power ON, or to do a cold reset (Shift+Break+RESET) but the result didn't change: " That doesn't always do the trick, if it's crashed it will ignore the keyboard. Meanwhile the "memory power" NiCd keeps the corrupt zombie RAM in its corrupted state. The goal is to clear the RAM state. Sometimes you need to shut off memory power switch on the bottom of the unit and let the whole unit drain of power (no internal batteries, no DC power hooked up). After you do this don't forget to turn the memory power switch back on. Since it only took a months to corrupt your RAM I would also be suspicious of the internal NiCd. If you haven't replaced it chances are it's 20 some years old and needs replaced. http://bitchin100.com/wiki/index.php?title=Recovering_an_Unresponsive_Laptop -- John.
[M100] M100 only displays black blocks
Hi, I usually use my M100 at least once or twice a week but I was away for almost a full month, and when I turned it on yesterday, it decided to take a break :o( When I turned it on, it was OK for about 3-4 seconds (the time for me to look at the menu clock, and to check on my watch it was still on time) and then the screen become white with a few black lines (notably the first and last lines). I pressed a few keys, hoping for a refresh problem, and then used the RESET button, which cleared the screen (I could still see the white pixels when turning the contrast dial all the way up though). I tried a few time to power OFF/power ON, or to do a cold reset (Shift+Break+RESET) but the result didn't change: Every time I got either a totally white screen or a white screen with a few black blocks (here is a picture: http://pics.lefauve.org/M100-Blocks.jpg ). I tried to press ENTER + beep + ENTER to check if only the display was affected but I got no beep. I also tried to remove the REX but it didn't have any effect at all. I checked the batteries (5.5V) and tried new ones. Still no changes. Any idea what I should try next? That was my "good" M100, so I really hope I'll be able to fix it. Eric PS: The whitish square visible on the picture was already there before the problem. It's usually clearer than the rest of the screen, but the text is still visible (probably one of the LCD controllers about to die...).
