Josh Watson wrote: >This is my first post to the list - I've had a PB 5300 and a 190 >before, and have just bought 3 dead pismo's. Two of them look >intact (I've looked under the keyboard), one is certainly dead. >They do nothing if given power, and wondered if anyone had any >tips for getting them to power up - will a Pismo power up >without a PRAM battery/HDD/DVD/etc attached, or if i remove some >boards? > >I've already tried resetting the Power manager with the button >on the back and tried disconnecting the battery/mains and Li-ion >battery for a few minutes. Here's what can be missing and a Pismo will still start (assuming what's left is OK): pram batt main batt hd + optical drive LCD (plug in an external monitor if u need to see anything :-) invertor board PC card cage keyboard + trackpad modem
Here's what a Pismo needs to start (_good_ parts that is): logic board processor (400 or 500, doesn't matter) ram so-dimm, qty 1, any size (no ram on LB!) power supply card sound (power input) card power supply interconnecting cables How do I know the above? heh heh, been there, done that. :-) Best way to test is to _borrow_someone_else's_ known-good Pismo and swap parts into dead 'Books. Second best way to test is to buy a known-good Pismo (just the bottom end?) and swap parts into dead 'Books. I'd leave the main battery out for testing, and unplugging the pram batt from the LB might help. Hmm, it appears not to actually even need ram, a ramless working Pismo will still respond thusly: "Note: There is no RAM on the microprocessor board itself, so the computer will beep if no memory is installed in at least one of the slots." Here's what I've read about your Pismos' symptoms: ------------------------------------ Computer won�t power up 1. Restart computer by pressing the reset button on the back of the unit. Wait five seconds and press the Power key. 2. Try known-good power adapter. 3. Try known-good, firmly seated, charged battery. Repeat. 4. Connect power adapter and restart computer in 3-4 minutes. 5. Disconnect internal keyboard completely and try powering up unit. If unit powers up, replace keyboard. 6. Verify microprocessor card is firmly seated. 7. Replace sound card. 8. Replace power supply card. 9. Replace microprocessor board. 10. Replace I/O logic board. ------------------------------------ hth, Dan K ................................. http://macdan.n3.net/ carracho://dankephoto.dhs.org:9700 hotline://dankephoto.dhs.org:9500 ................................. -- 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 ---------------------------------------------------------------
