Chosen Solution
hi i have one imac a 1224 and non video on the screen The diagnostic led on the logic board are 1on, 2 on 3 on but there isn’t install the video card because the led 3 is every on my logic board is dead? please answare me dear Silvano
LED Startup Sequence LED #1 = Power available. If no LED is visible: • 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 LED #1 + LED #2 + LED #3 = Power available, system is powered on, and video card found. If third LED is not visible after power on: • Verify that MXM video card is seated properly • Verify logic board
hi but on my logic board the led 3 is every on when i press the power button but the video card isn’t install? thanks Silvano
hi if i install the video card on the logic board the led 3 is on but there isn’t the video on the screen. dear Silvano
