The graphics card capacitor is off, and I want to solder it.

Steps: First, use a knife to scrape off the oxide layer on the capacitor foot (this step is very important).

Second, heat the soldering iron, and when the solder can be melted, the power is off (anti-static).

3. Press the capacitor foot and the circuit board tightly, melt the soldering iron with tin, stick the flux (rosin), spot weld the capacitor foot, and quickly remove it after the solder wraps the capacitor foot.

Don't be afraid when welding, but don't be unscrupulous.

Have you ever soldered anything else?

That's the same, the more scared you are, the worse the welding, as long as the welding is not short-circuited, there is no problem.

It's normal, it's just not tin.

Remove the entire capacitor, polish the pins with spinning paper, and then smear them with flux, and then solder.

The solder you use is hollow and has rosin in it, so it's normal for you to have this situation, and rosin is used to cool down and make it easy to bond with the board, so it's okay and it won't affect you.

Are you sure the pads are still there? If not, it won't be welded at all.

By the way, there are many types of capacitors, and you have to have a BOM and component location diagram to know how much capacitance should be on those positions.

It is best to clean the board with alcohol before welding according to the upstairs method.

Don't weld it, let's change it.

Have you ever heard of a hot air desoldering station? It's dangerous to use a regular welding pen!

If you don't have a very strong do-it-yourself ability, it is recommended to find a professional to do it!

Simply dig and you can buy the same type of capacitor and go up there

You can't make him as good as he does without its professional tools

Don't just solder your temperature too high

You can try to lower the bottom temperature

There is an electric welding pen that does not add it to the one with the metal material rewelding.

It can be said to be a point.

I advise you not to solder it yourself, or find someone who specializes in repairing graphics cards to help you.

The general practice of rookies, you can look at which capacitor is packaged, directly replace the same model or be larger than its value, but it is generally OK not to be smaller than its value

If the financial conditions allow, wouldn't it be better to buy a new one?

Since you don't know how to judge the quality of capacitors??? I doubt it.

1) Observe with your eyes first, and confirm that the capacitor is bad.

2) Use a diode to measure whether the capacitance is broken down, and the conduction indicates that it is broken. Or use the ohmic file to measure the resistance should be infinite, otherwise it is bad.;

3) Charging, and then use the voltage to measure the voltage of the capacitor, the voltage is zero, it means that the capacitor is not charged, and it may be that the capacitor is connected to the wire and the circuit is broken;

The above methods are for your reference, you can try it, but the capacitors on the computer motherboard or graphics card are broken, and you can generally distinguish it with your eyes.

It's best not to use it until it's repaired. The analysis is as follows:

1. If the capacitor is burst, it will generally cause voltage undervoltage, if the voltage is a filter, it will cause problems such as unstable current, interference, etc., find a shop to repair the computer, and replace the capacitor that bursts out.

2. The capacitor is exploded, if it is still in use, there is no problem on the surface, and it may burn out other electronic components on the graphics card after a long time, and the graphics card will be completely struck at that time, and the gains outweigh the losses, so repair it.

3. You can buy a few of the same according to the withstand voltage value and capacitance value of the capacitor, and you can get it if you have welding skills.

1. The function of graphics card capacitors is filtering and energy storage. Damaged capacitors of the graphics card can affect the image quality and even cause the graphics card to not work properly.

2. There are two reasons why the capacitor of the graphics card is damaged: the ambient temperature around the graphics card is too high; , the quality of the capacitor is not good. The use of solid-state capacitors in high-quality graphics cards is an effective measure to improve the quality of capacitors.

There are two cases of electrolytic capacitor bulges:

1. Bulge at the top.

2. The bottom is bulging.

That is, the pin bulges. In serious cases, the capacitor will be tilted and easy to find; Lighter ones require eyes to be at eye level with the board to see, or to be felt by shaking the capacitor body by hand.

The bulging capacitor can be soldered with a soldering iron and replaced with the same capacitance value and withstand voltage value or slightly larger.

No. The burst capacitor is on the top, not the bottom.

The graphics card loses capacitance, whether it can be used normally, it's hard to say, but it won't expand the fault, as long as the pad does not encounter a short circuit together, it is recommended to test it directly on the machine, if it can work normally, you can ignore it, if it can't work normally, then send it for repair or make up for the loss back to the thick pants.

The capacitors on the graphics card can be several according to the use: filter or bypass capacitors, oscillation capacitors, coupling capacitors, reset capacitors, the main filter capacitors are generally larger, and the welding is firm, it is easy to fall off the small chip capacitors, if the use is oscillation capacitors, reset capacitors, there are only a few on the board, the probability of falling is not high, that is, it will not expand the fault, the coupling capacitor will only cause the audio or ** abnormal, usually will not expand the fault, filtering and bypass pure sail capacitor barrage, The large volume is not easy to drop, those small filters or bypass capacitors, there are generally many components with the same function on the board, and dropping one or two or even a few pieces has little impact on the entire circuit. If the volume of the capacitor is relatively large, especially the round electrolytic capacitor or solid-state capacitor, the square tantalum capacitor, it is best to make up for it and try again.