Palhano
Member
The customer said they were using their Mac, the screen went blank, and the sound continued. When they turned off the Mac and tried to turn it on, it started with the fan running at maximum speed.
When checking the motherboard, I found oxidation on the UP800. I don't have this chip new, so I replaced it with a chip taken from the 820-01041 motherboard. But it didn't solve the problem. I tested the motherboard in another case, but the problem persists: the fan is at maximum speed and no display.
On the QP800:
PPVOUT_LCDBKLT - 0v
LCDBKLT_EN_L - 10.9v
PPVIN_LCDBKLT_R - 10.9v
Any tips?
When checking the motherboard, I found oxidation on the UP800. I don't have this chip new, so I replaced it with a chip taken from the 820-01041 motherboard. But it didn't solve the problem. I tested the motherboard in another case, but the problem persists: the fan is at maximum speed and no display.
On the QP800:
PPVOUT_LCDBKLT - 0v
LCDBKLT_EN_L - 10.9v
PPVIN_LCDBKLT_R - 10.9v
Any tips?