Mac Pro working but logic board LEDs on when computer off!
Hello. I obtained a used mac pro 5,1 and it appears to work perfectly (even passes Apple Hardware Test without problem) — but when I first plug the unit in (supply power) without starting it up — — the S3 LED is green and the “PLT RST” LED is RED continuously (see picture).
AFTER STARTING THE UNIT… the following LED’s burn continuously GREEN:
3.3V, 1.5V, 1.05V in upper bank
S0 in middle bank
X1 PG, and 5V in lower bank
AFTER “Shut-Down” from Apple Menu, the S3 LED is green, and the “PLT RST” -and- “RSM RST” burn RED continuously.
Please Help! I was told that this machine was used as a server. I turned off all the “Wake On LAN” stuff I could find… but the lights still burn! I’ve searched the web and tried the macrumors website without success. I even tried to glean information from the intel website without solution. THANKS IN ADVANCE!
http://forums.macrumors.com/showthread.php?p=20502657
