The screen is not clear when the LED screen is plugged in. What is the cause of it?
First, if the new panel mount electricity as the picture is not clear, it could be control card set scanning is wrong, or no rows to (check from control card to the first row of the board line), 5 v power supply wrong also can appear the problem. If this phenomenon is suddenly discovered after a period of time, the biggest possibility in addition to the control card failure is that the board water has burned the chip or the power source.
Second, you can also try a DVI interface display, first to see if the DVI output of the video card is normal. In general, the resolution of the DVI interface is 1024 * 768. The reason for the lack of clarity in the led display screen is likely to be a problem of graphics CARDS or driving problems. Try to unplug the receiving card from the back of the screen and press the debug button on the receiving card to see if the screen body scan is normal.
In addition, other reasons for the unclear picture of full color LED display are also provided for reference:
1 LED display cannot display > > > solution:
◯ view electronic display power supply is normal, whether to have 220 v high voltage input;
2. The signal on the LED display is abnormal> > > solution:
◯ check the LED control card parameter Settings are correct, if there is any signal transmission to the LED electronic display control card;
◯ check whether the communication line is normal communication, to see if the LED control card have signal input;
◯ check the LED control card 5 v power supply is normal;
3. Partial screen body of electronic display screen is not normal > > > solution:
Check to see if the abnormal screen power supply is working properly; Signal transmission line failure, output problem; Single module failure of the screen body.
◯ detection output interface to the signal output of the IC circuit connection or short circuit.
◯ clock latch signal detection output is normal.
Level between the last driver IC ◯ testing whether to output data to his mouth with the output interface of the data connection or short circuit.
4. There is a problem with the heat dissipation function of the chassis> > > solution:
◯ eliminate heat dissipation problem. Check if the fan is running properly, fill the fan, clean the dust in the box, and solve the problem of heat dissipation.
5 graphics card or display does not support high resolution > > > solution:
◯ restart computer, press F8 key continuously, in the advanced boot menu, choose to enter the “safe mode” enter login system, and then under the Windows into the display Settings, select 16 colors, click “apply” button, click the “ok” button.
◯ restart your computer, in the normal mode, the Windows into the device manager, remove the graphics card drivers, reboot the computer.
The above is an introduction to the reasons and solutions of the color LED display. From simple to complex, start from the basic start to conduct the check, must be able to solve the problem. I hope I can help consumers.