The battery came from a well known supplier (and active member of this list), and I think it’s good, but what clearly isn’t is the 102. I checked voltages again last night, and got 3.7 with memory switch off, and 3.4 dropping to 3.3 with it on. That drop in voltage now seems more consistent with the difference between no load/load on the battery, but with prior issues this 102 has had, there may well be hardware problems which just haven’t manifested consistently. The fact it has corrosion on the power section of the main board obviously means there is a problem, so I can’t really expect it to behave entirely properly.
This is why I was looking for a ’spare’ machine, since the 102 has been in regular use, and I’ve been depending on it even when I shouldn’t have. It’s been charging for a couple of days now, (mem switch on) but it still has the same blank (all pixels on) screen at attempted starts - even when I have had the mem switch off to create a cold start. Oddly though, yesterday it started on the power adapter, and ran for a couple of hours quite normally, even when I disconnected the AC adapter and ran it on batteries. So much so that I was able to restore RAM from the Rex# in it (genius invention, Mr. Adolph) and then use it to complete a piece of work and save to a Backpack drive (best peripheral ever). Then I turned it off, and tried restarting it after 5 minutes, and it was back to the blank screen. Since then it hasn’t booted at all. Andy > Date: Sun, 29 Sep 2024 13:51:55 -0700 > From: "John R. Hogerhuis" <[email protected]> > To: [email protected] > Cc: [email protected] > Subject: Re: [M100] 102 with power-up issues > Message-ID: > <CACutKUj_ndon9rOQuE4d=J8U15GH6MvrHLA6u6LoeOg-e=v...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > The backup battery does take a fair amount of time sitting on the supply > before it's charged up. And you should consistently be doing a cold start > not just reset while getting the backup system going (so ram is in a clean > state to begin with) > > You may well be having other issues but I recommend being consistent to > rule out the usual issue which is backup battery fully charged and a proper > cold start. > > > > Message: 4 > Date: Sun, 29 Sep 2024 18:11:07 -0400 > From: Josh Malone <[email protected]> > To: [email protected] > Cc: [email protected] > Subject: Re: [M100] 102 with power-up issues > Message-ID: > <CAB==wom+vom1mupgvl9_2aeaw-yjb6_ggj3x0o5_sctcvzj...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > If memory serves, the memory battery voltage should not sag like that. > Something is drawing too much current or your replacement battery is not > healthy. Where did you source the new battery and what type is it? > > On Sun, Sep 29, 2024, 16:52 John R. Hogerhuis <[email protected]> wrote: > >> The backup battery does take a fair amount of time sitting on the supply >> before it's charged up. And you should consistently be doing a cold start >> not just reset while getting the backup system going (so ram is in a clean >> state to begin with) >> >> You may well be having other issues but I recommend being consistent to >> rule out the usual issue which is backup battery fully charged and a proper >> cold start. >> > > Message: 5 > Date: Sun, 29 Sep 2024 18:11:07 -0400 > From: Josh Malone <[email protected]> > To: [email protected] > Cc: [email protected] > Subject: Re: [M100] 102 with power-up issues > Message-ID: > <CAB==wom+vom1mupgvl9_2aeaw-yjb6_ggj3x0o5_sctcvzj...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > If memory serves, the memory battery voltage should not sag like that. > Something is drawing too much current or your replacement battery is not > healthy. Where did you source the new battery and what type is it? > > On Sun, Sep 29, 2024, 16:52 John R. Hogerhuis <[email protected]> wrote: > >> The backup battery does take a fair amount of time sitting on the supply >> before it's charged up. And you should consistently be doing a cold start >> not just reset while getting the backup system going (so ram is in a clean >> state to begin with) >> >> You may well be having other issues but I recommend being consistent to >> rule out the usual issue which is backup battery fully charged and a proper >> cold start. >>
