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It does not go to disk target mode. I have tried a lot. Do you know what the apple authorized workshop has that we don't have that they can recover data in DFU mode?
Also we are not owner of the laptop. Can we still take it there? Will they do data recovery?
We soldered to wires to the mainboard. We plan to assemble the laptop and try to turn on it by shorting the cables. Is this correct? We need advice here.
Hi there,
We have a MacBook that does not boot correctly. It says The version on the macOS on the selected disk needs to be reinstalled. We need to get the data off form the MacBook before erasing it. The thing is whatever we do on that MacBook the pink screens flashes once and the MacBook...
I am trying to connect external switch to force DFU mode. Reading logi.wiki web page. So my board is A2179 and it says I should connect the wires to between pin 1/R8010 to pin 1/C7845, or other convenient 1V8_SLPS2R point. I want to get confirmation that I am doing correctly. Basically we want...
Hi there,
We have MacBook Air A2179 doesn't charge and turn on at all. We removed Logic Board from laptop and inspected under the microscope. Looks like there is no visible damage. We checked all port using a USB-C meter. The laptop is stuck on 20v and 0.05 ampere. I need your help in this...
inserting 1V means I will connect 1V lab DC power supply to the F5200:2 point and ground line to the ground point on board. Can you tell me how to find it? Using thermal camera? I need your guidance at this step. Thank you.
Hi. Here are the measurement. What do you think about them?
LN480 - 0.31 kohm
LN980 - we dont have this could on the board
L5230 - 0.55 Mohm
L5840 - 0.49 kohm
L5820 - 0.31 Mohm
L5800 - 0.25 Mohm
LF800 - 0.30 kohm
LP800 - 0.23 Mohm
We checked C5251 and C5250 capacitors. There is voltage.
Yes you are right. Short remains on PPBUS_AON. But there are many elements. How do we proceed to find the next issue. Thank you.
So we removed both F5200/01 from the board. Checked C5200 and C5201 first leg and both of them shows 12.3 vdc. What should we do next? Looks like there is short somewhere. Please advise how to proceed next. Thank you
I did not know there is 138C solder paste. I just ordered and I will have it tomorrow. Thank you for helping me.
I will not write any voltage unit when I measure for diode mode when.
Pure short is the problem. It should not be pure short. So I will remove F5200 and check C5200, post it here...
Diode mode to ground is missing as well. It shows 0.0001 mvdc for PPBUS_AON and 0.3 mvdc for 3V8_AON. I put the multimeter on diode mode, put the red on ground and black on element.
Also we tried to remove F5200 from the board but 420C hot air cannot remote it. It does not get melted. It...