hkcThe reason why the monitor has no signal and black screen and the solution: 1. The host power supply fails or the hot fan is damaged. You can check whether the power indicator light is on or whether the fan inside the chassis is rotating; 2. The power supply is blocked or the connection is in contact. If it is defective, you can turn off the power and open the case, re-insert and unplug the memory module, wipe the gold finger with an eraser in one direction, and then turn it on again; 3. If the power supply is damaged, replace the power supply to solve the problem.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
What should I do if the hkc monitor has a black screen without signal?
There are generally the following reasons for a black screen:
The first one
Check the power supply of the host to see if it is working properly. First, determine whether the host system is receiving power supply by checking whether the power indicator light on the host chassis panel is on and whether the power fan is rotating. Or the cooling fan in the chassis is damaged, causing poor heat dissipation and triggering the shutdown protection mechanism. This results in a black screen. The inspection method is to check whether the fan inside the chassis is rotating. If it does not rotate, the fan is damaged. You need to call after-sales service to replace the fan.
Second type
The host indicator light is on or off, the screen is not powered on (the power indicator light is off) or it is powered on but has no signal or display "no sighal", the former means power failure or poor connection, while the latter usually means poor contact of the memory module. If the monitor is powered on but shows no signal, turn off the power and open the case, re-insert and unplug the memory module, wipe the gold finger in one direction with an eraser (you can also scrape the back of your thumbnail), install it and then turn it on again.
Goldfinger:
The third type
The voltage may be too high or too low Automatic shutdown protection for circuits that cause overvoltage or undervoltage in the host power supply. The power switch and reset button on many low-quality chassis often become damaged after being used a few times, causing the entire machine to have a black screen with no display. If the power supply is damaged, replacing the power supply can solve the problem.
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