Chosen Solution
led lights on logic board stay lit when powered on. how do i turn them off? what should i pay attention to in order to fix it?
@thedon here is the table that explains why and when the lights are on. Compare this to your computer and see what you get.
Notes for LED Table Power Mac G5 (Late 2005 Dual 2.0/2.3 GHz) logic boards include LEDs 1–5 and LED 7, but not LED 6. Power Mac G5 (Late 2005 Quad) logic boards include LEDs 1–7. CPU A is located closest to the PCI Express slots; CPU B is located below CPU A (closer to the power supply). Make sure CPU screws are tight. LEDs 3, 4, and 5 operate differently from the other LEDs. They remain off until you remove the air deflector (clear door inside the side access panel), at which point they should go on. If LED 3, 4, or 5 is on before you remove the air deflector, check the operation of the air deflector sensor. Note that the fans will run at high speed while the air deflector is removed. LED 5 verifies that Open Firmware has loaded. To allow time for it to load, be sure to wait at least one minute from first power up before you check this LED. Some logic boards have two additional LEDs: one located near the bottom edge of the logic board and the other to the right of the top bank of DIMM slots. These LEDs were used only during manufacturing and should be ignored.
