The reset light of Gigabyte f2a85xm-hd3 motherboard does not run out of code. The VCC of each major unit is normal, and there is no vdda 2.5V VCC. Replace the Q62 and start the machine normally.
GeForce gtx750-2gd5 graphics card does not display when it is turned on. Analyze the power management chip up1642p circuit,Jump wire,short-circuit, boot normally.
Gigabyte ga-h81m-d2 motherboard has no pwrok, which leads to no reset. Replace Capacitor of corroded by moisture, and the boot is normal.
ASUS p8h61-mlx3 Plus motherboard power on and restart, running line measurement Measuring diode value to find the fault point, replace the resistor, boot normal.
Evga gtx1080 graphics card does not display when it is turned on. A hole is missing in PCB board, ftwx Short circuit,Move Board (move the main chips to another motherboard),Normally booting up.
ASUS p8h61-m LX3 motherboard was powered on auto power off. It was found that the undervoltage Current protection was caused by the damage of pr510 resistance. After replacement, it turned on normally.
ASRock B75 Pro3 motherboard power on does not run out of code, no reset,Jump wire borrow power, boot normal.
Foxconn b85mx motherboard or so auto power off for 20 minutes, has been restarting no booting, oscillograph waveform to find the fault point, replace the triode, boot normal.
ASUS h61m-k does not display or run code after startup. Replace the small field tube on the PG line of the CPU, and the startup is normal.
