What if the LED screen doesn't show?
Author:Zhou Lin Time:2021-06-11 11:20 Browse(617)
1. Check the power supply of the LED display screen, and use the test pen or multimeter to check whether there is power at the user end of the switch connection. Whether there is a problem with the switch, or check whether the line is broken.
1. Check the power supply of the LED display screen, and use the test pen or multimeter to check whether there is power at the user end at the switch connection.
check whether the switch has any problem.

What if the LED screen doesn't show?

or check whether the line is broken.
check whether there is power at the user end at the switch connection2. The screen synchronized with the computer.
first, check whether the computer is in the sleep state. If it is in the sleep state, go to the control panel first, click power management, and select the never option for the system to wait and turn off the monitor. In this way, the computer will not sleep and the screen can work normally. If it is not in the sleep state, open the chassis to check whether the control card and communication cable are firmly connected, Check if the communication cable is broken.
check if the communication cable is broken3. Check whether the parameters of display position and screen size in the software are consistent with those given by the installation engineer.
if you don't know the parameters.
count the number of pixels of length and width on the screen first. When the screen size is determined, then see the difference of display area on the screen, and then return to the computer for adjustment until the position is consistent.
if you don't know the parameters4. If the display is not comprehensive.
check whether the file size is consistent with the screen size.
if the display is not comprehensive5. Open the chassis.
check whether there is a short circuit on the control card6. Check whether the parameters in the software are consistent with those given by the installation engineer7. Check whether the serial port is firmly connected.
whether the communication line is broken.
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(1) check the power supply of the LED display screen.
use a test pen or a multimeter to check whether there is power at the user end at the switch connection.
check whether the switch has problems.
or check whether the line is broken.
check whether the power supply of the LED display screen is stable(2) First, check whether the computer is in sleep state; If you go to sleep,Enter the control panel first, click power management, and select the never option for the system to wait and turn off the monitor. In this way, the computer will not sleep and the display screen will work normally; If not, open the chassis to check whether the control card and communication cable are firmly connected, and check whether the communication cable is broken.
if not, open the chassis to check whether the control card and communication cable are firmly connected(3) Check whether the parameters of display position and screen size in the software are consistent with those given by the installation engineer.
if you don't know the parameters.
count the number of pixels of length and width on the screen first. When the screen size is determined, then see the difference of display area on the screen, and then return to the computer for adjustment until the position is consistent.
if you don't know the parameters(4) If the display is not comprehensive.
check whether the file size is consistent with the screen size.
if the display is not comprehensive(5) Open the chassis.
check whether there is a short circuit on the control card(6) Check whether the parameters in the software are consistent with those given by the installation engineer(7) Check whether the serial port is firmly connected.
check whether the communication line is broken.
check whether the serial port is firmly connectedIf the cause can not be found after testing.
you can go http://www.jnhtf.com/ Take a look at it on the website, or call the telephone above for consultation.
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