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Bad capacitance also depends on where it is bad.
If it's bad in the signal filtering circuit, it's generally not too much of a problem to break one or two.
Because this part of the circuit is generally a lot of capacitors connected in parallel.
But there are some places, such as some circuits that affect the timing of the power supply.
Breaking one of them will affect the timing of the motherboard, causing a series of problems such as boot problems.
Again, if it's bad on the CPU power filter circuit.
It can also cause the power supply to be unstable.
In fact, the most important thing is to know the reason why the capacitor is broken, whether it is caused by the quality of the motherboard or the hidden design hazards, if there are these problems, even if the capacitor is replaced, it will continue to break.
You are now four capacitors bulging, it is estimated that the four capacitors are in the same part of the circuit, that part of the circuit must have a problem, it is recommended to send it for repair, so as not to cause greater damage, after all, it is not expensive to replace the capacitor, and it is depressing to burn out the board.
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You have to look at the position of the capacitor to judge, in general, the capacitor bulges as long as it does not affect the use of it, you don't need to care about it, the capacitor bulging may cause the motherboard to work unstable, easy to crash or black screen, or even unable to start the computer.
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Under normal circumstances, the bulging capacitor will not directly affect the use, but if the capacitor near the CPU bulges or bursts, it is likely to cause instability or failure to start, you can go to the market to buy similar products with the same withstand voltage and capacity for manual replacement.
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Muster? What do you mean, it's the capacitor "pulp burst".
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On the basis of electronic technology, the most basic characteristic of capacitors is charge and discharge. Regardless of the CPU on the motherboard
Memory. Graphics... The large-capacity capacitors on the circuit play the role of filtering, while the small-capacity capacitors play the role of bypassing high-frequency signals, and the capacitors play a resonant role in the oscillation circuit.
Therefore, if the capacitor fails, it will cause the corresponding circuit to work abnormally or not work, sometimes we can't see it, but the instrument can measure it. Your question is too general, can it be like this, I don't know if you are satisfied? ok?
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Next to the CPU is generally the CPU power supply rectifier bridge part.
If it's broken. There will be a failure to turn on.
or boot up.
There is also the blue screen. It's the same next to memory.
It's basically like that.
Don't think it's so complicated.
Because generally the memory is bad, it belongs to picking vegetables.
Hehe. There is also a memory master chip next to the memory.
When I was doing it, it was a small chip with 8 legs.
As for the model number, I remember it all.
Forget about it now.
Ay. Now the motherboard updates quickly.
Most of them are encapsulated.
If you want to study, you just need to figure out the power supply part of each part.
Feel like something is wrong.
Just check it out.
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Capacitors have only one function, which is to play a charge-discharge role in the circuit. It cooperates with some other electrical components, such as resistors, inductors, etc., to complete the simple work of a system, but in the end, many capacitors, resistors, and inductors work together to complete some very complex work. The capacitors next to the CPU and memory are mainly used to complete the filtering and current stabilization, if they are broken, then the voltage and current are not normal, so the CPU and memory are also not working properly.
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What should I do if the motherboard capacitor is broken. Generally, if the capacitor is broken, there will be capacitor explosion, slurry leakage and other phenomena. See it at a glance. Professional multimeters are also available.
To detect the test voltage, the first thing to do is to power on the motherboard, which is generally done by professionals.
If the capacitor is broken, you can use a soldering iron (or not live) to remove the broken capacitor and replace it with a capacitor of the same capacity or larger than the original capacity. Pay attention to the welding on both sides to prevent the occurrence of virtual welding.
If you don't have this technology, you should go to a professional maintenance person. The easiest way to remove the broken capacitor and replace it with the same capacity is to do this.
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You can find a professional to replace the capacitor, if you have a strong ability to do it yourself, you can also buy the corresponding model of capacitor to replace it, but my personal suggestion is to let the professional replace it as much as possible, the risk of replacing it yourself is too great, and it will directly damage the motherboard.
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Test whether the motherboard can light up, and if it can light up, change to a capacitor of the same capacity.
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Change to a capacitor with the same withstand voltage value and the same capacitance.
If you have the technology, you can replace it, and if you don't have it, you can find a computer maintenance personnel to replace it, and don't cause a bigger problem because of a capacitor, otherwise the gains outweigh the losses.
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According to your description, if it is confirmed that the capacitor is broken, after finding out the cause of the fault and eliminating other faults, then the capacitor of the same specification and model should be replaced. Thank you for your understanding and support!
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Some of the capacitors on the motherboard are broken, but they can still be used normally; Some can be used but are unstable; Some capacitors are broken, and the motherboard is unusable. The first two cases will eventually become the last case if they are not used for a long time. Therefore, once you find that the capacitor of the motherboard is broken, the safest way is to replace the capacitor of the same model in time.
The capacitors on the motherboard are also called electrolytic capacitors.
Most of them are used as power filters. Its shell is marked with its capacity and withstand voltage, such as 3000 microfar, 50 volts, etc.
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1. The motherboard capacitor will cause the computer to restart automatically for no reason, and it will take many restarts to turn on, and suddenly the blue screen will fail; In severe cases, it may cause damage to the CPU or Southbridge chip.
2. The function of the capacitor is to filter, which can turn the pulsating DC into an approximate straight line DC, high temperature is the main reason for the capacitor to burst, the power consumption of the computer or CPU is high for a long time, the capacitor of the CPU power supply part is easy to produce high temperature, resulting in the electrolyte inside the capacitor boiling, the pressure rises, when the pressure exceeds the pressure of the aluminum shell of the electrolytic capacitor, it finally exceeds the bearing limit of the capacitor top vent and bursts. Therefore, most motherboards no longer use electrolytic capacitors for CPU power supply.
3. If the capacitor on the motherboard bursts, it must be replaced with a capacitor with the same parameters as the damaged capacitor, and all the capacitors connected in parallel in the circuit should be replaced together.
Capacitors, often referred to as capacitors, are denoted by the letter C. Definition 1: A capacitor, as the name suggests, is a 'container for electricity' and is a device that holds an electric charge.
Product Name: capacitor. Capacitors are one of the electronic components widely used in electronic devices, which are widely used in circuits in terms of DC blocking, coupling, bypass, filtering, tuning loop, energy conversion, control, etc.
Definition 2: A capacitor, any two conductors (including wires) that are insulated from each other and in close proximity to each other form a capacitor.
Capacitors are not the same as capacitors. Capacitance is a fundamental physical quantity, symbol c, and the unit is f (farad).
The general formula c=q u parallel plate capacitor is the special formula: the inter-plate electric field strength e=u d, and the capacitance determination of the capacitor c= s 4 kd
With the rapid development of electronic information technology, the upgrading speed of digital electronic products is getting faster and faster, and the production and sales of consumer electronic products based on flat-panel TVs (LCD and PDP), notebook computers, digital cameras and other products continue to grow, driving the growth of the capacitor industry.
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The lifespan has reached its limit.
At this time, the electrical performance of the entire circuit will be seriously affected.
Here's why. The large capacitor on the motherboard is mainly responsible for current purification, that is, filtering, when the capacitor is used for a certain limit, the capacity of the capacitor will become smaller due to the change of the chemical composition inside the capacitor, and the overall performance of the capacitor will decline.
Therefore, if the capacitor has a burst or bulging, it means that the capacitor is about to hang up, if the visual effect is very obvious (you can see it at a glance), then it means that the problem has been more serious, it is strongly recommended to buy a new capacitor with the same label for replacement, otherwise it will seriously affect the use of such and such an inexplicable failure. The motherboard hangs up. And it will also affect other peripheral accessories...
It is recommended that lz think twice...
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What do you mean by not cultivating, do you mean continuing to use it?
The capacitors are burned, can they still operate normally, won't they crash frequently, and if the capacitor is broken, the motherboard is broken, and how to call it It's not much money to change a capacitor.
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If it is not repaired, it will cause the motherboard to be unstable, easy to crash, blue screen, and unstable voltage. Capacitors are generally filtered.
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You have to repair it, otherwise the stability will not be good.
Also, this kind of problem is usually caused by overheating, and you have to solve the heat problem.
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It's very simple, just buy a few capacitors and solder them.
How long will it take to break Generally speaking, it depends on the quality of the motherboard Then it is the surrounding environment, why it will be bad Because the voltage will be bad, because the ambient temperature will be bad, and the quality of the motherboard will be bad if it is not good.
The capacitance in the full state is much better. But there are individual special places that are good in a half-old state. >>>More
Listen to your should be a problem with sovereignty, my company has a few motherboards that are also 845gl, at that time it was also automatically restarted as soon as it entered the system, and then I reinstalled the system, but it restarted again when it was halfway through, at that time I suspected that it was a virus attack, and then took the hard disk to other computers to check for viruses, and there was no virus. I changed the memory, even the CPU was changed or the same, I began to suspect that it was the motherboard, looked at the motherboard, and found that there were a few bulges in the capacitors next to the northbridge chip and memory slots, and I replaced those capacitors and reinstalled the system normally. >>>More
According to what you said, the motherboard should be used for a long time, the capacitor capacity is reduced, it cannot be filtered normally, and even the pulp bursts, which causes crashes and blue screens, etc., you can replace the filter capacitor of the CPU power supply circuit first, and it can be done in ten minutes, and the charge will vary from person to person, generally not more than 50, as long as there is no problem with other components, it can continue to work for several years after repair.
Electrolytic capacitors are used in large quantities in electrical equipment, and the failure rate is very high. Electrolytic capacitor damage has the following manifestations: first, the capacitance is completely lost or the capacitance becomes smaller; the second is minor or serious leakage; The third is the loss of capacity or the capacity becomes smaller, and there is leakage. >>>More