Hi! I need some parts for a 820-01958 and don't really want to buy a dead boat just to harvest the parts I need. I can't seem to find the parts on Mouser or Digikey, but maybe the replacement just will not look the same. I need these parts ... L7210, L7220, L7230, L7400, U7210, U7220, U7230. I picked up this 2020 MacBook Air and after checking it out it looks like someone was working on it in this area and broke these components. Maybe the MacBook is cooked, but I want to replace the parts and see.
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820-01958 Need parts.
- Thread starter Zebulon
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Need to have scrap boards in stock.
I don't see other way to get the coils.
Apple also uses lot of proprietary chips, which are not available new from manufacturer.
However, T2 and M1 scrap boards are not cheap.
Mentioned components are parts of CPU power supplies.
I don't recommend to waste time on this board.
Keep it as scrap for other repairs.
I don't see other way to get the coils.
Apple also uses lot of proprietary chips, which are not available new from manufacturer.
However, T2 and M1 scrap boards are not cheap.
Mentioned components are parts of CPU power supplies.
I don't recommend to waste time on this board.
Keep it as scrap for other repairs.
The reason I am hopeful for this board is that it seems to have activity. Not sure if that activity is coming from the T2 and it's bridge OS or if it is a sign of something more, but it gets trackpad click and I can see the machine in configurator. Was even able to successfully revive it according to the host Mac, but I don't see an image. even on external display. Strange, or perhaps not, when the power cord is plugged in it give me the chime that it's connected. Almost seems like it's booted, but no image. Like I say, maybe that just due to the T2 chip and Bridge OS though?
Machine can be detected in DFU, without working CPU; it only needs SLPS2R and AWAKE voltages.
Also, trackpad force feedback is not a sign for working machine; is just a hardware response from actuator coils.
How can you expect image from a board where CPU coils are not present???
I bet CPU is fried...
Also, trackpad force feedback is not a sign for working machine; is just a hardware response from actuator coils.
How can you expect image from a board where CPU coils are not present???
I bet CPU is fried...
Ok, that's what I was wondering about with DFU and trackpad. However, because the damage to the components looks to be caused by someone who attempted to repair the board, I'm going to keep trying to get it working. The components are not missing, but a few that I named have chips or cracks in them, so who knows. Maybe I'm wasting my time, but in this case, I'm not in a rush. 
Do you get voltage at L7210?