No Power-up on Mac Pro 2009
Second time my 2009 model 4,1 Mac Pro 8-core 2.26 has gone down with power-up issue.
Startup issue-- press button, brief fan, then complete shutdown.
Red LED shows behind cheese grating.
Repaired under AppleCare at authorized center in Boston over a month ago.
Only visit inside the tower was two weeks ago, upgraded to proper ECC RAM with thermal sensor to 24GB-- identified corrcetly under both boot partitions, working flawlessly.
Saturday evening I press the button, and---
It's baaaacck...
Unit has always been plugged into clean power -- 1500 watt APC UPS. Never plugged into wall.
Also, before touching the button I discharge possible static discharge, standard practice.
Very annoying, holds up client work. Not happy.
I have two eSATA host adapters and a Blackmagic Design Intensity Pro PCI card in slots, along with stock Nvidia G120.
I've been hearing power supplies may not be up to snuff.
Anyone else experience this?
Best, as always,
Loren S. Miller
Mac Pro, Mac OS X (10.5.8), and 10.7