LED Display FAQ

LED display common faults and fixing method

    The whole screen failure:
     

    A. the whole screen is not bright (black screen),

    1, check whether power supply electricity.

    2, test the communication lines connected, do you have any wrong. (synchronous screen)

    3, synchronous screen test sending card and receiving cartoon - green with or without blinking.

    4, computer monitor whether protection, or screen display area is pure blue or black. (synchronous screen)

    B. the whole unit board not bright (black screen)

    1, the successive frames horizontal direction not bright, check the abnormal and normal cell plate unit board wiring connections between connected; Or the chip 245 is normal,

    2, successive frames and longitudinal direction is not bright, check this column if the power supply is normal.

    C. upward unit plate is not bright

    1, check the lines and 4953 output pin if there is a pass.

    2, 138.

    3, check whether the 4953 hot or burned.

    If there is a high level 4, 4953.

    5, 138 and 4953 feet if there is a general control.

    D. unit board is not bright

    1, 595.

    2, check whether the module corresponding to the up and down through the foot through.

    3, 595 if there is a pass to the module output the feet.

    E. unit board lack of color

    1, 245 r. gutierrez is the data output.

    2, check the normal output of 595 feet, and if there is a general abnormal input 595 feet.

    Led display maintenance simple and easy process

    A control system

    1, the whole screen is not bright or squares

    Control whether the host open

    Communication line is good

    Sending card is good

    Multimedia card and acquisition card, whether cable connected between the sending card

    Receiving card JP1 and JP2 wrong switch position "open the host

    Plug the communication line

    The sending card inserted

    Even a lot of media CARDS and acquisition card, cable between sending card.

    Adjust JP1, JP2 switch position

    Computer monitor whether protection, are pure blue or black or display shows field. (synchronous screen)

    2, each time you start the LED studio tip can't find the control system

    COM port to send data card signal gathering line not connected or the computer itself

    The COM is bad.

    Connect the data line or replace the computer

    3, the whole screen picture shaking or double

    Check the computer and between the lines of communication

    Check the DVI line multimedia CARDS and send CARDS.

    Sending card is bad. The communication line inserted or replaced. Reinforce inserted the DVI line again. Replace the sending card

     
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