Apple macbook pro 15 a1707 laptop motherboard repair

Motherboard repair for MacBook Pro 15 laptop. The model of this laptop is A1707
The motherboard of this laptop carries the coding
820-00928-a
The problem with this laptop is that it does not work at all (there is no power).
When connecting a voltage and current checking device to all USB-C ports, the data is exactly the same, which is that the voltage reaches 20 volts with very little current being drawn and the device does not work in any way!
First, an anatomical image of the motherboard was reviewed, showing all the important circuits with the correct impedance values in case the motherboard is safe.
Then we moved on to measure the impedances on all of the power supply circuits for this board, and it became apparent to us that there was a defect in the thunderbolt power supply circuit. By referring to the board view and the general diagram of the motherboard, and with the help of a thermal camera, the fault was identified and diagnosed accurately, and the fault was in the AC power supply circuit for the thunderbolt.
After removing the IC and before replacing it, we repeated the process of measuring the impedance at the ends of the circuit file to obtain values other than those we obtained before removing the IC, which indicated the presence of a short circuit in the circuit.
After confirmation, the IC was replaced with a healthy one, and we repeated the process of measuring the impedances to obtain normal impedances that indicate the integrity of the circuit.
We then proceeded to the process of examining the device to discover that there was damage to the battery and thus the device was not working either!
By removing the damaged battery, it was observed that the current drawn on the testing device had changed, and thus the device worked normally. Data was recorded on the device’s screen confirming the completion of the repair process, praise be to God.
Enjoyable and beneficial viewing, we wish everyone, and do not forget to send us your beautiful prayers

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#Laptop_repair
#Motherboard_repair
#Motherbrod_maintenance
#MacBook_Pro
#Mac _ maintenance
#Apple_MacBook
#Apple_device_maintenance