Video card failure causes computer monitor to spend screen

The phenomenon of computer malfunction has many styles, the graphics card malfunction causes the computer monitor flower screen is also the computer maintenance frequently meets the breakdown, the former friend uses is ASUS V1326 graphics card, uses the SiS6326 chip. Just open the machine work normally, the running time is slightly longer after a flower screen phenomenon occurs. Pro, the video card failure caused the computer monitor flower screen, can not afford to hurt ~!

It seems to be the graphics card PCB board and a component of poor contact. To observe and measure the components that may produce a large amount of heat in the video card, in the detection of the main chip SiS6326, found that the left leg of the chip (is on the chip) has two pins and PCB board contact bad, gently broke the PCB board, heard a slight "pa" a sound, and then observe the SiS6326 chip, Found that this position has 9 pins and PCB board off welding, a total of 11, and other welding normal pins, this should be the cause of the failure!

Failure analysis and processing: Under normal circumstances, this phenomenon may have the following reasons: Video memory internal physical damage, graphics card BIOS problems, video card has been overclocking; PCB board and components contact bad. With the above thought, we can proceed to the fault check. First, the video memory inspection, careful observation, detection of four pieces of memory chip and peripheral components, no virtual welding and damage characteristics (such as burst, discoloration, off welding, short circuit, etc.) are then flushed the video card bios to a normal public version bios, and then the graphics card is installed to test, until the failure occurs, touch the main chip on the card , and there is no phenomenon that the chip temperature is elevated. This eliminates the problem with the graphics card BIOS and the possibility of memory corruption. Graphics card PCB board does not have any on the overclocking jumper, after inspection found that the video card does not overclocking phenomenon, excluding the video card overclocking caused the possibility of failure.

With a good grounding point 25W heat iron, with the finger grounding ring after the repair welding. First with the rosin and alcohol solution gently daub off the welding pins and PCB board, and then weld off the welding pins, the card will be loaded back to the computer test, a long time running without flower screen phenomenon occurred, troubleshooting!

Know that the video card failure caused the computer monitor flower screen failure, processing is much easier. I hope the above analysis is helpful to you!