In a message dated 3/23/02 12:14:04 PM, [EMAIL PROTECTED] writes:
<< > clicks loudly once and thats it . no video no nothing. sounds power supplyish. >> True, but these symptoms are also traceable to poor or incomplete connections. In one Q950 that displayed precisely this symptom, disconnecting the power supply from the motherboard, blowing both the motherboard and power supply connector with compressed air, and reconnecting them, resulted in the machine being restored to normal function. Power-on functionality is dependent, in part, upon the PRAM battery being up to snuff. A new PRAM battery usually measures about 3.68 volts. When placed in-circuit, these usually measure about 3.66 volts. When the voltage reaches about 3.2 volts, many functions become unreliable. If depressing the power-on key ... or activating the security switch ... fails to cause the power supply fan to start rotating (which indicates that the +12 volt supply is working), then the +5 volt supply probably also won't work. A short to ground of the +5 volt supply, such as could be caused by an improperly seated SIMM, could also result in a temporary power-on, followed immediately by a forced power-off. -- Quadlist is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Quadlist info: <http://lowendmac.com/lists/quadlist.shtml> The FAQ: <http://macfaq.org/> 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/quadlist%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
