Lenovo ThinkPad X1 laptop does not turn on when it is cold. When encountering Lenovo x1, it is not necessarily the CPU that causes this problem. It may be caused by the faulty soldering of the crystal oscillator. The machine is currently in normal use, and the fault is repaired!
the whole board of sotay geforce RTX 2060 super-8gd6 graphics card is not VCC, the fan starts to run wildly, does not recognize the card, installs the radiator graphics card, the computer operates normally, troubleshooting!
ASUS p8h61-m LX3 Plus motherboard memory, but the dud4 anti-static tube and yellow circle of the 6 pin chip, troubleshooting.
Jijia b75m-d3v computer auto power off, remove Q16, power on normal run code, this board repair.
No VCC was found on the main board no power on and rsmrst of MAXSUN ms-n520l. It was found that one of the resistors was damaged. After replacement, it turned on normally.
Lenovo cm3a760me motherboard boot into the system is normal, P port and USB port can not be used, add a 4.7K resistor on the chip, the function is normal.
The IBM x3550 M2 was powered off within 10 seconds of startup, and the fault indicator showed BRD. It was caused by the corrosion of two resistors and one capacitor at the eighth pin of max1917 near the fan port. After replacement, it was turned on normally.
Gigabyte ga-z87p-d3 motherboard no reset,auto power off restart, VCC1_5_The PCH VCC line was disconnected, and it was started up normally after replacement.
Lenovo m3a760m motherboard no booting, the actual fault is that the motherboard does not run out of code and there is no memory VCC. The oscilloscope measures the waveform and finds the fault point. The replaced component turns on normally.
