First post to this list. A couple of weeks back I posted a note about this problem to MacWizards and the only constructive reply I got was to join this list. I'm not in a burning rush to solve this problem because I've got a Ti PowerBook to use, but I'd like to get the old WallStreet working, so I'm looking for any insight as to the nature of the problem here. I've tried to include all of the relevant information, but in case I've forgotten anything that matters, just ask and I'll provide the missing detail, if possible.
- web ----- Original Post to the MacWizards List ----- I've got a Wall Street PowerBook that's got a problem, and I'm having some difficulty sorting out what's wrong. The symptoms are as follows: 1. Won't boot up. 2. When the power manager is reset and you attempt to boot it, you get a chime, then a second chime, then a third chime that's weaker and clipped at the end. 3. Once in a while the above chiming sequence is followed by horrible noises from the speakers like something was being shorted and sparking and self destructing inside. It's a very ugly sound. 4. When trying to reset the Power Manager using the key combo, every second attempt results in the fan coming on while the keys are depressed. Pressing the key combo again causes the fan to cease spinning. I've replaced the PMU board, thinking that it was the problem, but the same things happen (though it did boot up once when the PMU board was installed and the PM reset, but it wouldn't boot up a second time). Today I measured the voltage on the PMU battery, and it measured 5.6 volts. There are 6 cells so I'm thinking that the voltage should be over 6 volts, close to 6.6 or so. But then since the silicon runs at lower voltage, 5.6 may be enough to sustain it. I guess what I'm looking for is someone who may know from experience which board is the problem in this Mac, based on the symptoms, or if I need to get a new PMU battery. I should mention that running off of AC or battery made non difference. It wouldn't start. This unit had a board fail the first two weeks I had it, and Apple replaced three boards (PMU, charge, power) and it worked for 4 and a half years before the current failure. I've got a new Ti PowerBook but I want this one back in operation for my wife. Any experience based advice would be welcome. -- 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 ---------------------------------------------------------------
