The power supply is designed to stabilize an alternating voltage of 220 volts, which it converts into a stable 12 volts. When the power supply is warming up, urgent measures must be taken, which will be discussed later.
Operating temperature, and how to know it
Since the computer power supply does not have any temperature sensors, it will not be possible to carry out temperature measurements using the program. Therefore, you have to use the physical method of determining why the power supply is heating up.
First, pay attention to the smell coming from the computer’s power supply, if overheating has already taken place, then the smell from it will come out very unpleasant, reminiscent of burning. Another method is to simply touch the computer’s power supply and determine if it is overheating.
An important role is played by the air flow that comes from the fan, which will help determine how much the computer's power supply is heating up. For this kind of measurement you will need a thermometer, whose range can cover up to 100 degrees Celsius.
In some power supplies, a temperature increase controller is installed, which responds to overheating by a complete shutdown.
Causes of overheating of the computer power supply
The main cause of overheating is the dusty state inside the power supply itself. However, there are cases when the energy consumed by the system approaches its maximum and the power supply is heated simply because it lacks its own power. Another point can be called a malfunction of the fan itself, which cools the radiators inside the power supply.
Cleaning
First, disconnect the power supply from the network, then disconnect the wires from the motherboard and other devices. After these manipulations, you can wind the power supply from the body of the system unit.
When spinning the bolts, you need to get rid of the cover and look at the degree of dusting of the device, because it is it that prevents the flow of air from cooling it from the inside, while reducing its performance.
Dust can be removed in two ways - using a simple brush, and using a conventional vacuum cleaner for the computer.
If the matter turned out to be a fan malfunction, then it is worth taking the power supply to a service center, where the cooler will be replaced by a working one. The fact is that if you simply clean and lubricate the fan, then after a short time, a vibrating sound will again be heard, which will lead to breakdown of the fan.
If the power supply is heated during the launch of the games, then the matter is overloading the unit itself, since it reaches the maximum possible power consumption. In this regard, you should replace a low-power device with a more productive one. To choose it correctly, you can use the online service, which is called the power calculator. By entering the data of each component there, you can find out how much power the power supply will suit your computer.
Laptop power supply
Laptop power is much more complicated than a similar system in a desktop computer. First, it is worth noting that a laptop is a portable device with its own battery that needs to be recharged periodically.
The power supply itself is located outside the laptop case, on the charging cable. It looks like a rectangular transformer that converts AC 220 volts into stable 12 volts. Normal heating is the period when the laptop is in working condition and is connected to the network. This happens because the transformer must not only charge the device, but also supply a charge for operation.
Consequences of overheating
If the laptop power supply is heated, then the reason for its appearance will be easy to identify. This usually happens due to a breakdown of the mains cable or damage to the transformer itself. Overheating in this case can lead to such irreversible consequences as a malfunction of the entire system of the portable device.
At the first detection of overheating of the power supply, you should contact the service center, where experienced people will diagnose and offer solutions to the problem.
TV power supply
In TVs of modern models, there is always a switching power supply. Its task is to supply a voltage calculated for a certain power, which allows the device to function normally.
If there is abnormal work or its absence, then the fact is that the TV's power supply is heating up. Despite the fact that frequent breakdowns of TVs occur in this area, it is necessary to observe some operating rules, which few adhere to.
The causes of breakdowns can be different:
- Violation of the temperature regime in the room where the named equipment is located.
- Simple construction of circuits.
- Poor TV repair.
- Blown fuse.
- Unstable voltage in the power supply circuits.
- Combustion power transistor.
If the power supply is warming, what to do, a specialist will tell you. Of course, it is better to call the TV repair wizard , but there is the possibility of self-diagnosis and repair.
Diagnostics and repair of the TV power supply
To get started, you will need a pair of skillful hands, a soldering iron and a multimeter. When the tools are available, you can proceed directly to the repair.
The first step is to disconnect the TV from the network by disconnecting the plug from the outlet. Now it’s worth the wait a bit, since it takes some time to discharge the high voltage capacitor. It usually takes no more than 15 minutes.
After the capacitors have lost their charge, you can remove the board from the TV. It must be carefully examined for physical malfunctions or defects.
Next, a multimeter will be used, since they will need to measure diodes, resistors, capacitors and transistors. Then you need to deploy the board and inspect it for defects and the strength of the parts.
When measuring a resistor, you should pay attention to the resistance - if it is zero, then it is faulty and the breakdown is in it.
Capacitors, in the event of a malfunction, will look like inflated barrels. It is worth checking their fullness, and if the deviation is not more than five percent, then there is nothing to worry about.
As for the diodes, one of its units should demonstrate in the forward direction resistance, which should be from 3 to 6 kOhm.
If it is possible to unsolder the defective parts, then it is worthwhile to replace them, otherwise the service cannot be avoided.
Some TV models have an automatic overheat protection system, which works when the TV heats up to the maximum allowable temperature.