HT2652: About the Power Mac G5 (Late 2005) diagnostic LEDs
Learn about About the Power Mac G5 (Late 2005) diagnostic LEDsQ: My Power Mac G5 has been down for a month. I finally got it to boot up and noticed the date had changed to 1969. Now the screen ha ... My Power Mac G5 has been down for a month. I finally got it to boot up and noticed the date had changed to 1969. Now the screen has fine horizontal line on it and is no longer sharp. What should I do? more
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Sep 13, 2012 9:06 PM in response to WSMGINCby BDAqua,Hello, on the Date...
Might be time to replace the PRAM Battery, 4 years is close to their lifespan, far less if ever without AC power, & can cause strange startup problems...
See which one your G5 has...
http://eshop.macsales.com/item/Newer%20Technology/CR2032/
http://eshop.macsales.com/item/Newer%20Technology/BAA36VPRAM/
Have you blown the dust out lately, especially the Graphic Card & PSU?
Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
iStat Menus...
http://bjango.com/mac/istatmenus/
And/or iStat Pro...
http://www.islayer.com/apps/istatpro/
If you have any temps in the 70°C/160°F range, that's likely it.