I'm having a similar problem. Pismo froze, wouldn't restart. Eventually after many resets, got the HD to spin up but no boot cycle and no video (external output either). Bought an unused motherboard off ebay and installed it last night. Dead as a doornail. 7 hrs later, saw 4 green lights on the battery I used from this pismo, then it spun up like before--didn't boot.
Below got me thinking "processor" so I put this one in to the dead machine--still nothing (I suspect a wait is nec for something to happen with power on and battery out, like my 1400 required periodically). So I put the other processor in this one, and got same symptoms. Sure looks like I need a new processor. I might as well get a faster replacement (both pismos are 400s). But which one? Is speed increase significant enough to go to OSX? I will likely have a virturally new Pismo motherboard for sale too. J > In-Reply-To: <[EMAIL PROTECTED]> > Message-Id: <[EMAIL PROTECTED]> > From: Adam Thayer <[EMAIL PROTECTED]> > Subject: Re: Pismo troubleshooting > Date: Fri, 30 Jul 2004 17:05:51 -0700 > > > On Jul 30, 2004, at 1:42 PM, Alejandro wrote: > >> Check this. >> With powerbook attached to the AC Adapter (no >> battery), press the start button, and you should hear >> a little "contact" sound at the same time the Start >> button is pressed (before the Startup sound). >> If you don't maybe the machine is not powered at all. > > You are right in that the machine is not getting power to where it=20 > needs to go. > However, it doesn't seem like the Battery Board, and since power is not=20= > > getting anywhere (entire machine is cold after pressing the power=20 > button), that would leave the logic board, correct? What I am trying to=20= > > do is figure out what components would cause the Pismo to remain cold=20 > dead with both a fully charged battery, and an AC power source. > >>> First and easiest thing to check is the RAM. I've >>> seen a few Pismos refuse >>> to boot because they had a stick of bad ram. If >>> that's not it, try a >>> different processor (assuming you've also checked >>> it's not that the >>> processor isn't fully seated on the logic board). > > Well, if it is a bad stick of RAM, there should be something happening.=20= > > HD noise, a light, the normal speaker 'click', the beeps of the=20 > self-diagnostic, something. Bad RAM doesn't stop power from flowing=20 > like this. > > On Jul 30, 2004, at 6:48 AM, Mikael Bystr=F6m wrote: > >> Are you sure the Soundcard gives power to the I/O board? This was the >> reason in a dead Pismo I dissected recently. > > The good news is that I already tested with a battery and eliminated=20 > this as a possibility... unless the AC board has magical powers to=20 > prevent a boot from a battery, which doesn't seem entirely likely. > > What I am trying to do here is figure out if it is the Logic Board,=20 > Processor card, or battery board that could cause a completely cold,=20 > dead, lifeless Pismo. It is as if it is a door-stop. > > Regards, > Adam Thayer -- G-Books is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-Books list info: <http://lowendmac.com/lists/g-books.html> --> AOL users, remove "mailto:"; 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]> Archive: <http://www.mail-archive.com/g-books%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
