Gigabyte ga-b250m-d3h motherboard does not display when it is turned on, vccsa VCC is not normal, replace Short circuit Capacitor, boot normally.
Gigabyte ga-h61m-d1 motherboard switch auto power off,switch again, no CPU VCC, oscillograph waveform test to find the fault point, after replacing the voltage divider resistor, the boot is normal.
ASUS h110m-k motherboard does not respond to boot, there is no CPU VCC,short-circuit small resistance,VCC is normal,Normally booting up.
ZOTAC gtx1050 video card does not display when it is turned on, and many groups of VCC have no output. The components replaced by corrode show normal display.
ASUS gtx960 graphics card point is not bright, graphics card has no core VCC, replace up1815p, boot normal.
ASUS b75m-a motherboard no booting,switch,auto power off did not reset. Replace 103 pull-up resistor, and the boot is normal.
The ASUS GTX960 graphics card is not lit. After measurement, the graphics card has no core VCC. Remove and open it.Triode, the boot is normal.
The ga-h61m-s2-b3 main board of Gigabyte did not respond when it was turned on, and the CPU VCC did not come out. According to the schematic running line Measuring diode value, the fault point was found, and the C47 small Capacitor was replaced, and the startup was normal.
INNO3D gtx550it graphics card automatically shut down when heated. The oscilloscope measured the waveform, found the fault point, replaced the core power supply chip up1609q, and the power on was normal.
