Computer Innocent flower screen is the problem there?

Flower screen before the shortcomings I have said a lot of, today to tell us a practical case!

Flower screen defect Appearance: Brother use is Asus V1326, choose SiS6326 chip. Just when the operation is normal, working hours a little longer after the flower screen appearance occurred.

Disadvantages Analysis and disposal: Usually, the appearance of this shortcoming can have the following reasons: Memory internal physical damage; The BIOS is in doubt; PCB board and components contact bad. With the above thought, we can proceed to carry out the defect check.

The first video memory inspection, careful inquiry, 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.), and then rewrite the BIOS as a normal public version of the BIOS, and then installed for inspection, until the disadvantage occurs, with the hand touch on each of the primary chip, There was no apparent increase in the temperature of the chip. This will sweep the BIOS with doubt and memory damage can be. The PCB board does not have any on the overclocking jumper, after the examination discovered does not have the overclocking appearance, swept the overclocking to constitute the disadvantage can sex.

It seems that there can be PCB board and a component of poor contact. To inquire and measure components that can occur a lot of heat, 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, quietly broke off the PCB board, heard the thin "pa" a dynamic, and then query SiS6326 chip, Found that this position has 9 pins and PCB board off welding, a total of 11, other pins welding normal, this is about the cause of the shortcomings!

Know the shortcomings of the reason, the disposal is much more brief. With a good grounding of the pointed 25W hot iron, with the finger grounding ring after the repair welding. First use rosin and alcohol solution quietly daub off welding pins and PCB board, and then weld off the welding pins, will be installed back to the computer test, long hours work without flower screen appearance, shortcomings cleaning!