On May 25, 8:51 pm, Kallikak <[email protected]> wrote:
> It doesn't need both batteries to be alive.
One of the Mac II family models needs both batteries good to start the
power supply. I don't remember if it was the IIfx though.
> If after replacement both your batteries are giving 3.5V (and it is
> getting to pin 15 when you hit the power button) then your problem
> must be elsewhere.
The details Ken writes above are important, specifically the part
about the voltage being at the proper level when you hit the power-on
button. Measuring the voltage on the battery alone is pretty
meaningless. A voltmeter puts minimal load on the battery. So while
the battery may read ~3.6V to the voltmeter, it may not actually be
able to deliver any current and maintain that voltage. Starting up
the power supply demands a little current.
After ten years, it is a safe bet that both batteries are flat.
Replace the one which you did not originally replace.
Jeff Walther
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Vintage Macs group.
The list FAQ is at http://lowendmac.com/lists/vintagemacs.shtml and our
netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/vintage-macs?hl=en
Low End Mac RSS feed at feed://lowendmac.com/feed.xml
-~----------~----~----~----~------~----~------~--~---
