COLORFUL gtx760 graphics card can be booting up into the system, irregular screen is black or frozen, replace VCC filter Capacitor, boot normal.
The VGA of emb-6011 motherboard is not displayed.VCC and c415 of the measuring bridge are not provided with VCC, and r486 is burnt out, resulting in Short circuit. Replace the Capacitor resistor and start the machine normally.
The EMB-6011 motherboard is turned on without display. The oscilloscope measures the waveform, finds the fault point, replaces the damaged chip, and turns on normally.
Inno3D GTX1060-3G video card turned on screen is black or frozen, and the main board Oxygenation was disconnected, resulting in only 5V VCC being normal, and nothing else. After Jump wire, the boot is normal.
The USB interface of Gigabyte-H81M-D2 motherboard can't be used. Only two of the six USB interfaces can be used. Replace two resistors, and the USB interface is normal.
Gigabyte-P61-S3 motherboard can't be turned off. After it is turned off,auto restart, two resistors are replaced, and it is turned on normally.
The MSI H170M PRO-VDH motherboard didn't respond when it was turned on, but the memory and oscilloscope measured the waveform to find the fault point. After replacing the resistor, it turned on normally.
Dell B75 motherboard didn't respond when it was turned on, and five alarms didn't show. IO chip 35 pin didn't return SUSC# signal. After Jump wire, it turned on normally.
Asus B250M-K motherboard, energy switch does not have CPU VCC. The measurement found that 7002 was damaged. After replacement, it started normally.
After the ASUS GTX580 graphics card water damage, the boot screen doesn't show. Test the line Measuring diode value, replace a few small components, and the display is normal.
