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. > > On Sun, Sep 29, 2024, 1:48 PM Andy <[email protected]> wrote: > >> With the memory power off, it reads 3.7v, with it on, the voltage >> declines to about 2.6, albeit a little more slowly. I assume this is >> because it is feeding RAM rather than anything. >> >> The old battery, out of the unit, reads 3.55 volts. >> >> The only way I seem able to get the 102 booted up right now is with the >> AC adapter. Even then, it takes a few power on/off cycles, sometimes with >> reset pressed, and usually comes up with just a partial home screen first. >> On a new set of batteries, it doesn’t seem to get even that far - just the >> all-on blank screen. >> >> The old battery showed no sign of leakage or corrosion on the board, but >> what I assume to be part of the motherboard dealing with power (below the >> battery compartment) did have a lot of corrosion on both sides of the >> board. Unfortunately, I don’t have equipment or skills to know how to test >> anything there! >> >> Andy >> >> > >> > Date: Sat, 28 Sep 2024 18:15:43 -0400 >> > From: Josh Malone <[email protected]> >> > To: [email protected] >> > Cc: [email protected] >> > Subject: Re: [M100] 102 with power-up issues >> > Message-ID: >> > <CAB==woO9b6kKMEVfa4hCqW_AHcUDKXt_LJj= >> [email protected]> >> > Content-Type: text/plain; charset="utf-8" >> > >> > What voltage do you read on the memory power test point with the new >> > battery? >> >>
