显卡维修总结（国外英文资料）.docVIP

显卡维修总结（国外英文资料） Graphics card maintenance summary - One, the black screen Clean: clean your fingers with a rubber. The entire video card is clear. This is a necessary step. Inspection: examine the front and back of the video card carefully, whether there is the false welding of the component, damage and disconnection, the signal wiring is broken and distorted. Detection: use multimeter to detect the power field effect tube of the video card, and the control electrode of the field effect tube. The graphics card controls the power component of the chip. The voltage of the electric measuring field, the control chip, the BIOS chip, the memory, the main chip of the video card, and the voltage of the power supply is normal. Clock: A: does the clock signal of the motherboard AGP slot be sent to the graphics card. B: whether the gold vibration on the graphics card is normal, and whether the patch capacitor and the resistance of the metal vibration are normal. 6 reset: A: the reset signal of the motherboard AGP slot is sent to the graphics card. B: the BIOS chip on the graphics card. 7 line field signal: whether the line field signal on the graphics card is normal output. This is the 13 or 14 pins of the VGA interface to see if the resistors are the same. Whether the output voltage of the feet is the same. Memory: memory damage can also be black screen. If you have a good or bad judgment, you can block each foot against the ground, and you can touch the display if it is hot And so on. Main chip: the first 8 is normal and only the main chip is broken. So thats where the maintenance basically stops. Mostly it doesnt make much sense. Second, the flower screen 1 DOS lower screen: adding welding VGA pins, adding welding VGA, welding BIOS chip, and welding display, can be eliminated. For the more severe screen of the flower, the welding doesnt work, the possibility of the damage is the most, and the bad development. If you still I cant. That will only change the graphics card. 2