HP 15-ay011ne laptop motherboard repair - processor power circuit malfunction

In this video, we repaired a laptop from HP, model 15-ay011ne
The motherboard for this laptop is coded BDL50 LA-D704P REV 1.0
The problem with this device is that it works without displaying data on the screen
We began the maintenance process by measuring the voltages on all circuits and they were fine except for the processor supply circuits as well as the graphics processor supply circuit.
We canceled or disconnected the discrete graphics processor for the purpose of examination, and the situation remained as is
We then moved to reprogram the BIOS chip, but we did not get any positive results!
We then moved on to study the processor’s power circuit and try to reach a logical and scientific diagnosis of the malfunction through what we obtained from parts of another diagram, due to the lack of any general diagram or board view for this motherboard! Also, there is no data sheet available for the IC for the processor’s power supply
With God’s grace, and after many measurements and inspections, we arrived at an accurate diagnosis of the cause of the malfunction and repaired it, as you will see in this important lesson.
We wish you an enjoyable and beneficial viewing
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