My Umax Supermac s900L ran with out a hitch for 8 years. Suddenly it would not boot up. All power lights go on and all CD drives, IDE, and SCSI hard drives are powered-up. The monitor remains black and no startup chimes are heard. I have checked the usual things like connections, lithium battery power, memory seating, trying to bypass the startup drive etc. Any suggestions? Could it be a bad ROM chip?
The stuff powering up just means that the 5V and 12V supplies are present (though not necessarily good) and that the ADB controller (CUDA chip) is working. My first guess would be that your power supply is heading south and the 3.3V supply is wonky.
The easiest thing to try is to unseat and reseat your processor as it may have worked its way loose. You may also wish to remove all your DIMMs (in case one or more has come loose). You can get to the chime and flashing question mark on the 16 MB of RAM soldered to the motherboard.
If you have a PPC604/150 or lesser CPU card handy try installing that as they run on 5V and do not require the 3.3V supply--this is a test, not a recommended CPU to live with.
Anyway, the power supply is the most vulnerable component to age-related failure.
Jeff Walther
-- SuperMacs is sponsored by <http://lowendmac.com/> and...
Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! |
Support Low End Mac <http://lowendmac.com/lists/support.html>
SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> --> 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/supermacs%40mail.maclaunch.com/>
--------------------------------------------------------------- iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com ---------------------------------------------------------------
