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Recent content by Epoch
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820-00840-A Not powering on, voltage fluctuates.
So far things looking good. Battery Charges, Wifi connects, Audio sounds good, Sleep mode works. Going to leave it on overnight and check in the morning to make sure everything stays working. We'll see!- Epoch
- Post #7
- Forum: Macbook Logic Board Repair Questions
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820-00840-A Not powering on, voltage fluctuates.
I wanted to report that the motherboard does turn on now and all the jumpy readings I was getting have disappeared for now. I'm not sure why it's working now because all I did so far was test L7030 In diode mode to ground and got 0.466v on both sides. Before moving on to the next coil I wanted...- Epoch
- Post #5
- Forum: Macbook Logic Board Repair Questions
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820-00840-A Not powering on, voltage fluctuates.
Hello, Thankyou! Yes I had the mother board completed removed from the device with nothing else plugged in.- Epoch
- Post #3
- Forum: Macbook Logic Board Repair Questions
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820-00840-A Not powering on, voltage fluctuates.
Hello! I have an 820-00840-A that does not power on. The amp meter reads 20v but the amps loop from .00a to .50a. I'm not sure of the history of this motherboard but it does look like some rework was done around u7000. PPBUS_G3H: Starts at 13.09V and holds for about 5 seconds then jumps around...- Epoch
- Thread
- Replies: 6
- Forum: Macbook Logic Board Repair Questions