First use multimeter to measure and check the drawing. It is found that when the 1.8V display card core is VCC en pin(36 pin), the PWM chip ordered on the Internet arrives and the chip is replaced. After that, the display card runs normally after the machine is repaired and the maintenance is over.
Asustek PRIME B250M-A has rebooted auto power off, the resistance corrode is skewed, and a 2.2 ohm resistor is replaced, and the fault is eliminated.
SAMSUNG Galaxy S21 can't be turned on and cannot be charged. After charging the battery, the mobile phone can be turned on. However, when the battery is charged to 60%, the current will be very small or even zero. After the battery is replaced, the fault will be repaired.
BIOSTAR A78LMZ motherboard does not run out of code, after replacing q106, the fault is repaired.
When the current is stopped at 0.018, it is obvious that the standby condition is not satisfied;We need to find out whether the standby of EC is not satisfied or the standby of bridge is not satisfied.
ASUS P8H67 has no memory. After removing the red components (silk screen 3320a) in the figure, it returned to normal.
Mechanical revolution x6ti-s notebook no booting, the South Bridge is broken, and there is a sr2c8 in hand, which was disassembled before, so weld it REBALLING,Connect the power supply press the start button, the current jumps from 0.03 to 0.7, pause for 5 seconds or so,auto power off, the same is true for me under synthesis.I changed the backup BIOS and flashed it back. After pressing the power button, the screen turned on for 2-3 seconds. There was no auto power off in half an hour. The touch panel and keyboard were normal.
After HUAWEI Mate 40 Pro Fall hard, the screen and shell glass cracked into spider webs. After dismantling the machine,Inductor was replaced and the CPU was replaced. The mobile phone can be turned on.
ASUS B85 PLUS R2.0,no power on, pr825,pin are out of order, and the tin is directly put on, and the fault is repaired.
