Power outlet troubles

I love machine this time encountered a lot of strange things. For example, after entering the operating system, there is an inexplicable "black screen"; the quality of the TV screen watched through the TV card is very poor, and the interference is serious; when using the Love Machine during peak hours, it is obviously a bit "dull "; when the monitor is started, the line width becomes larger.

These inexplicable faults have plagued the author for several months. In the meantime, I have re-installed the operating system, removed dust and replaced various accessories, checked the resource status, no problem.

One day, I accidentally heard a slight fire in the power outlet, so I took the power box apart and checked the contacts and wires carefully. No result was found. So where exactly is the fire? After analysis, I put the suspect on the "short-circuit protection" of the insurance tube, open the insurance warehouse, take out the insurance tube. It was found that the internal copper wire had become black, but it was not broken.

After changing an insurance manager, various inexplicable faults will not occur. At this time, I had a lot of feelings. As a diyer of old qualifications, I was tortured by an insurance manager for so long.

Cause Analysis: due to the poor quality of Insurance Management, a "quality" change occurs after a long period of use. In this way, the insurance tube indirectly acts as a resistance with a large resistance value, and this resistance value is unstable, so the voltage provided by the power outlet will be unstable, thus, a powerful interference signal is generated, which affects the video card's work and affects its image.

In addition, the unstable voltage also affects the power supply of the chassis, resulting in various inexplicable situations. For a display, the unstable voltage affects the initialization of its internal I2C control circuit, so the display bandwidth increases.

Finally, I would like to remind you that when there is a computer problem, do not blindly find the cause on the computer itself. External factors cannot be ignored.