Single work

820-2523, No POST


Board has green light.
Starts when we short the turn on pads to ground.
Doesn’t chime, or display video. Display turns on but wont show anything.
Board doesn’t attempt to boot for any bootable device.
Nothing on external display via thunderbolt neither.
Beeps when it doesn’t have a ram in the slot
Some times doesn’t want to turn on after being on for a few minutes.
Checked the inner side of the LVDS connector and found that some pins are loose.
Replaced LVDS connector board now chimes, works normal and passes ASD.

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Completed on

May 4, 2015