--- "Michael S. Macdonald" <[EMAIL PROTECTED]> wrote: > Jan wrote: > >> RE: PTP200, level 2 1M cache; 192 mb ram; OS 9. > >> Started having "corrupt PRAM symptoms" couldn't > zap, > >> etc. lost video display sometimes, etc. found > out > >> pram battery was dead; replaced it. Now can zap > >> pram, > >> but if I unplug the computer even for a few > minutes, > >> the date resets & i get no video on the first > boot. > >> subsequent boots are ok (get video, the date is > >> correct) AS LONG AS THE COMPUTER STAYS PLUGGED > IN. > > >> even low-level formatted my start-up drive & > >> reinstalled os 9 from scratch...still same > problem. > > >when i said "subsequent boots ok, get video, date > >correct" I should've said after I rebooted the > >computer, the video worked so i could then reset > the > >date. Then, subsequent cold starts/reboots are > fine: > >video works & date is correct. This is only if the > >computer is left plugged in (doesn't lose power). > > Hmmm...the first thing that comes to mind is to > ensure the new pram battery > was installed > correctly ...ie..that the + terminal matches that > indicated on the battery > bracket. Also, was the > replacement battery new ? If you have access to a > voltmeter, ensure that > the battery is putting out 3.6v. > > And a side note on pram zapping via the > command-option-P-R keys. Pram > settings are stored in a mobo IC and divided into > two 'levels'. The level > that stores monitor settings is not cleared if pram > zapping is invoked on > restart, but only if invoked from cold startup. > > Cheers...Michael >
I checked the voltage of the battery (out of the circuit) with a simple DVM & it read 3.57 volts. That does seem a bit suspect... but since I don't have a real" battery tester and before I start sticking my meter where it doesn't belong... Is is best to test the battery "in circuit" ei, while A) the computer's running? OR B) while it's just plugged in & not on. OR C) with the computer unplugged? tnx jan __________________________________________________ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com -- Power Computing is sponsored by <http://lowendmac.com/> and... 123Inkjets.com <http://lowendmac.com/ad/123inkjets.html> Support Low End Mac <http://lowendmac.com/lists/support.html> Power Computing list info: <http://lowendmac.com/power/list.html> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> List archive: <http://www.mail-archive.com/powercomputing%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>
