Chosen Solution
Cannot answer with a solution I’m afraid but I have an A1311 whereby the number 1 LED illuminates momentarily when the power cable is applied. Have swapped the PSU already but still unresponsive. Any advice?
Paul Scarbro right now it means your system does not power up. You replaced the PSU now time to check further. Check these LED Startup Sequence LED #1 = Power available. If no LED is visible: • First disconnect the AC cable from computer, then reconnect it to reset the LED status, in case computer was correctly shutdown and AC was kept connected since • Verify AC source • Verify known-good AC cable is connected • Verify cable connection between AC inlet and power supply • Verify cable connection between power supply and logic board • Verify power supply LED #1 + LED #2 = Power available, and system is powered on. If second LED is not visible when power button is pressed: • Verify power button connection to logic board • Verify power button functionality • Verify cable connection between power supply and logic board • Verify power supply • Verify logic board
