ytesfay80
Member
I have this liquid damaged machine. Initially the fan spun very fast and was making the 3 beeps Ram sound. I took the machine apart and noticed the underside of the fan was sticky and had liquid damage.
After the board was ultrasonic'd the machine boots fine now but the fan issue remained. In ASD the fan was the only thing to fail.
I even tried plugging in a fan from a 13" Air but that still did the same thing.
I put the board under a microscope and noticed that Q6060 was missing from the board so i put another one on it but still the fans spin on high immediately after the charger is plugged in.
Here are some voltages I get from that area.
R6061 Pin 1 - 3.32v Pin 2 - quickly pulses around 0.85v but then stays at 0.05v
R6065 Pin 1&2 - 1.62v
R6060 Pin 1 - 3.32v Pin 2 - 1.61v
J6000
Pin 1 - 5.1v
Pin 2 - 1.62v
Pin 3 - 4.63v
After the board was ultrasonic'd the machine boots fine now but the fan issue remained. In ASD the fan was the only thing to fail.
I even tried plugging in a fan from a 13" Air but that still did the same thing.
I put the board under a microscope and noticed that Q6060 was missing from the board so i put another one on it but still the fans spin on high immediately after the charger is plugged in.
Here are some voltages I get from that area.
R6061 Pin 1 - 3.32v Pin 2 - quickly pulses around 0.85v but then stays at 0.05v
R6065 Pin 1&2 - 1.62v
R6060 Pin 1 - 3.32v Pin 2 - 1.61v
J6000
Pin 1 - 5.1v
Pin 2 - 1.62v
Pin 3 - 4.63v