with no battery or power source (just the internal nicad) there should be a clean 3.6 volts or so at the power pin of each ram chip. that might also be worth checking as if that voltage is low you could get corruption. I'd check each ram module.
It may also not be RAM related. if there is, for example, a cracked PCB track somewhere, you might get an intermittent signal that causes a hang. It would be interesting to know if the machine is 100% reliable when you get it running. disable auto power down and let the M100 run some basic program for a day. see if it crashes. If not, then you might conclude the issue is related to power up and or power down. Steve On Tue, Jun 28, 2016 at 12:23 AM, Ryan Fransen <[email protected]> wrote: > I have confirmed it reads 4.06 volts after approx 24 hours after being > unplugged from roughly a 24 hour charge. What is weird, is after the > suggestion of reseating socketed connections, (I only found one IC with a > socket) and after reseating it, it booted up fine every time for ~10 times, > now back to the issue. Of note, when the issue reappeared after working > those 10 times, when continued off-on finally succeeded once, I noticed the > date time was reset. During those 10 successful startups however the clock > was not reset, as expected. > > Sent from my iPhone > >> On Jun 27, 2016, at 9:11 PM, Stephen Adolph <[email protected]> wrote: >> >> might be worthwhile to just check the voltage on it... make sure the >> battery is able to hold a charge at 3.6V and is not a bad battery. >> sounds like you keep getting ram corruption. >> >>> On Mon, Jun 27, 2016 at 11:03 PM, Ryan Fransen <[email protected]> wrote: >>> Good call on the reseat, I will do that as a good measure. >>> >>> Yes, I've replaced the nicad and have charged overnight, though I haven't >>> done anymore troubleshooting to confirm operation of the nicad circuit. >>> >>> Sent from my iPhone >>> >>> On Jun 27, 2016, at 7:53 PM, Lee Kelley <[email protected]> wrote: >>> >>> In your first post you said you replaced the internal battery, I assume that >>> was the soldered in place ni-cad. The next step that I would do is to >>> disconnect every connector be sure the contacts are clean and re insert it. >>> This might be all that's needed. This should include any socketed chip as >>> well. >>> >>> Lee >>> >>>> On Mon, Jun 27, 2016 at 9:34 PM, John R. Hogerhuis <[email protected]> >>>> wrote: >>>> >>>> >>>> >>>>> On Monday, June 27, 2016, Ryan Fransen <[email protected]> wrote: >>>>> >>>>> Lee, though this trick certainly did work, it seems this needs to be >>>>> repeated each time. Once turned off, then back to square one. Something >>>>> else odd, is that the trick appears to work only ~50% of the time, whereas >>>>> just turning off and on, will not result in anything more than the solid >>>>> pixels. >>>>> >>>>> Sent from my iPhone >>>>> >>>> >>>> The m100 had an internal nicd battery. Normally units I get off eBay have >>>> to sit plugged into the wall wart overnight before they function properly. >>>> >>>> It could also be that your nicd is shot and needs to be replaced. You >>>> could check the voltage across it after letting it charge. >>>> >>>> -- John. >>> >>> >>> >>> >>> -- >>> "I will never in my lifetime make a film that cannot be seen by the whole >>> family" Arther P. Jacobs
