How to fix a PC restart due to a voltage issue 55

The computer uses a switching power supply, its voltage adaptation range is very wide (150 250V), in the suburban junction, the general voltage is not very stable, but generally not lower than 150V for a long time, the power supply of the computer can work reliably;

The restart failure of the landlord should not be caused by the voltage rise, but the problem of poor load capacity of the host power supply; Namely:

1. The performance of the filter capacitor and diode of the rectifier filter circuit is poor;

2. The gain of the power switch tube is low; Generally, the offset resistance changes the value, which reduces the gain of the switch and affects the stability of the output power supply;

3. The leakage current of the thyristor or Zener diode at the +5V output terminal is too large;

4. One of the high-voltage filter capacitors is damaged (accompanied by the "squeak" sound of the switching transformer), or the capacitance of the two capacitors is inconsistent;

5. The performance of the +12V rectifier diode FRD (fast recovery diode) deteriorates.

6. The gain in the oscillation amplification link is low; This fault occurs when the amplification circuit is in a non-linear operating state.

General voltage regulators or UPS, their voltage adaptation range is not necessarily wider than the computer power supply, often due to their own unadaptability, resulting in malfunction, forcing the computer to power off and restart;

In addition, their maintenance and maintenance (especially UPS) is a system engineering, and the operating cost is not low;

Therefore, if you can be sure that the supply voltage is stable in the range of 150 250V, there is no need to spend money on other *** or faults.

It may be more affordable and practical to repair or replace the host power supply (which is slightly more powerful).

Santak (China's well-known trademark, top 10 UPS power supply brands, leading brand).

If it's just that the voltage is unstable, you can buy a relatively low-end one. 200-300 will do!

Replace the power supply, the most affordable is the Great Wall's.

It's best to buy a voltage regulator or UPS.

1. Call the power company to solve the problem thoroughly, 2. Buy a voltage regulator.

The main reason should be voltage instability, it is recommended to connect a 5000VA regulator.

If the voltage is unstable, a voltage regulator is safe.

The host power supply is replaced with a low voltage one.

Listen to their nonsense.

It's all a lie.

The optical drive is usually not used, unplug the optical drive power supply, reduce the power supply of the chassis, and truly achieve the effect of stabilizing the current, and the external equipment should be plugged in less and used less as much as possible.

It will hurt the computer hardware very much;

If you have to use it, add ups is preferred;

The second is to add an AC voltage regulator.

It's voltage instability.

Or the point in your home is overloaded and the voltage is unstable, which can easily lead to computer failure.

Clean up the dirt on the fan, and if it still doesn't work, repair the computer.

Just buy a voltage device and install it at home.