23 Mar
2020
23 Mar
'20
1:03 p.m.
On 2020-Mar-23, at 6:56 AM, emanuel stiebler via cctalk wrote:
I have 4000/90 which behaves funny. It only starts,
after switching on
twice. The first time, all LEDs stay on, flipping the switch off/on, it
boots happily.
Any insight?
I've experienced behaviour like this in an Apple-something.
It related to a dead RTC/boot-ROM battery. I figured it out (years ago) but now forget the
exact mechanistics, but it was along the lines of the first power-on leaves enough charge
in a capacitor for the subsequent power-on to see the RTC/ROM as at least 'valid',
albeit not 'correct', if you get my drift.
That's just a suggestion/possibility - I'm not acquainted with the 4000/90
specifically.