Hướng dẫn thay tụ cho mainboard

Brief introduction about capacitors : Capacitors are electronic components used to filter sources, filter noise, for oscillator circuits. On the mainboard, there are 2 types of non-polar ceramic capacitors and polarized capacitors. Capacitors on the mainboard are often used to filter noise, used in oscillator circuits. Commonly used capacitors for cpu vcore circuit, chipset circuit, ram source circuit. This is the main gigabyte image of the condenser ram source circuit, killing the ram source ic (8 pins ic).

The capacitor is dry or edematous, causing the machine to flicker at times when it is not, the machine is suspended and it is turned off. Or not even up dead ic. Replacing the capacitor for the mainboard needs to pay attention to the following 3 parameters:

+ Positive and negative poles. Need to mount in the right direction to avoid exploding capacitors or dead power ICs.

+ Capacitance of a capacitor is the capacity that the capacitor can hold, which can be replaced with a higher capacitance type. The symbol on the mainboard is μF (Micro fara)

+ The higher the withstand voltage of the capacitor, it will not be punctured, if the capacitor is replaced with a low voltage, the voltage   will puncture the capacitor.

On the mainboard, there are usually 6.3v capacitors with 820μF capacitance, 6.3v capacitance 1000μF, 6.3v capacitance 1500μF, 16v capacitance 1500μF type 16v mounted in the 12v circuit of the vcore source. The rest of the sources from 3.3v to 1.2v, attach a 6.3v . capacitor

Instructions for replacing capacitors for mainboard. If the capacitor on the mainboard is  6.3v with a capacitance of 820μF  , it can be replaced with a capacitor of  6.3v with a capacitance of 1000μF, 1500μF or maybe higher, as long as it can be attached to the main board. But do not change lower, if the voltage is lower than that, the capacitor will burn, if the capacitance is low, the machine will run erratically.

To replace the mainboard capacitor, you should use a large soldering iron, with a capacity of about 65w, if possible, buy a DC welder of about 300K instead of fast. The brothers put turpentine and a large lead on the swollen capacitor leg to remove it.

Pay attention to put a lot of lead and turpentine will take it out quickly and avoid scratching, or breaking the circuit on the main, the soldering iron must not solder plastic, solder plastic makes the soldering iron not solder anymore. Capacitors after removing from the mainboard are like the picture below.

On the mainboard, there is usually a white and colorless color to distinguish the pole – and +, the main is white + and the main white is -. On the capacitor, the white side is the pole -. As the picture above is main asus white side is pole +. On the capacitor, the white side is negative. Please pay attention to the main and capacitor polarity instead.

Attach the capacitor as well as when removing it, after replacing the capacitor, clean it with aromatic gasoline and check the machine again. If the disease is mild, after replacing, the machine has run stably, if it is severe, the IC circuit will die, you proceed to replace the IC.

Wishing you success.