Macbook came in with the costumer not naming one clear cause. The fan spins for 1 second then turns off, it's taking 25mA not entering S4 state. Here I have some measurements.
PP5V_S4RS3 = 0V
PP3V3_S4 = 0.31V
PP3V3_S4SW_SNS = 0.01V
PP3V3_S4_TBTAPWR = lowering to 0V
Thinking about replacing TPS51980 but since the fan does spin for a short second I think it is an active short somewhere which makes it get to S0 and then stop.
Is replacing TPS51980 then still my best bet or does this fan activity point to something I overlooked?
PP5V_S4RS3 = 0V
PP3V3_S4 = 0.31V
PP3V3_S4SW_SNS = 0.01V
PP3V3_S4_TBTAPWR = lowering to 0V
Thinking about replacing TPS51980 but since the fan does spin for a short second I think it is an active short somewhere which makes it get to S0 and then stop.
Is replacing TPS51980 then still my best bet or does this fan activity point to something I overlooked?