Gigabyte B365 motherboard does not light up, dry the tin to a 2.5V resistor, and the machine lights up.
When the mobile phone is turned on, the flower screen is found. Due to the universal tin-planting steel mesh, the CPU is removed again, and several spots are found to be soldered. After reinstalling the CPU, the mobile phone is turned on normally, and all functions are tested normally. The maintenance is over here!
Gigabyte GA-B85M-D3V triggered the power failure, dried the resistance, and the troubleshooting and maintenance were completed.
Test B0 channel video memory error exception. Disassemble and replace a single 512M memory chip of Magnesia. Run full load with MODS again, make sure there are no hidden faults in other video memories, run MODS test, and the test results are all PASS. When the machine is installed, the driver is automatically installed. Troubleshooting, the maintenance is over.
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.
When the chip is disassembled, the resistance value of 27 pins is infinite, and the resistance value of the installed chip is 638, indicating that there is no problem with the board layer. Replace the fifth chip, change the installation method, heat and weld from the bottom, the quasi-voltage comes out, the sound is there, and the headphone sound is there!
Yingtai B85 motherboard does not light up, and the system lights up successfully after brushing BIOS.
By looking at the same circuit from point to point, it is found that the capacitor corrosion is severe near the circuit corroded by water. Remove the CD3205 chip near the corroded circuit, and there is slight corrosion under the pin. Clean up the capacitors and resistors with corrosion around them, and stick the CD3205 chip again. It is normal to boost the voltage by 20V.
HUAWEi Mate 20 Pro restarts automatically from time to time, and the CPU has a common fault of virtual welding. The fault is repaired after the CPU is redone.
