The above technique is a myth . See https://youtu.be/1AcEt073Uds https://youtu.be/1AcEt073Uds . Trying to randomly unsolder and put back resistors or other co

The above technique is a myth . See https://youtu.be/1AcEt073Uds https://youtu.be/1AcEt073Uds . Trying to randomly unsolder and put back resistors or other components when you don’t know what the error is is another bad idea. The author should have tried to actually attempt to fix the logic board first. But before all that he should have inspected the board and use a voltmeter to see what the issue is. But even doing that he might need a replacement part.