Lenovo IB250MH did not trigger, but replaced with 32.768 crystal oscillator, and the machine returned to normal.
Gigabyte GA-H77-DS3H turns on the black screen and brushes the BIOS fault contact.
Gigabyte H81M-S1 has no CPU power supply. After replacing the IT8620E and ISL95812, the fault is eliminated, and the machine can be used normally.
Asustek A68HM-K can only press F1 when starting the machine. After inspection, it is found that the capacitor SC18 is leaking, causing the voltage to be pulled down. It is OK to replace it.
Gigabyte B365 motherboard does not light up, dry the tin to a 2.5V resistor, and the machine lights up.
Gigabyte GA-B85M-D3V triggered the power failure, dried the resistance, and the troubleshooting and maintenance were completed.
The black screen of the Yingchi GT630 does not display, and the NPN triode for power supply control is defective. After replacing the triode, all power supplies will normally generate a light.
Yingtai B85 motherboard does not light up, and the system lights up successfully after brushing BIOS.
The Sapphire PT-F2A85M-MA motherboard is powered down irregularly. Enter BIOSS and adjust the default voltage 1.4 to about 1.25. Find the H/W monitoring panel and turn on the CUP temperature protection.
