Fault analysis; The main problem of LCD screen flickering is concentrated in two directions.
Fault phenomenon: blurred screen
1、 The LVDS cable is damaged or has poor contact.
① Remove the LVDS cable and check the copper platinum interface for blackening and
oxidation. If there is, clean it with alcohol or an eraser.
② If the LVDS cable interface is intact, press the screen cable connector by hand and
observe if there is any change in the image. Any changes are mostly caused by loose
connectors or poor contact. Replace the LVDS cable or add a screen of thermal paper
on the back of the plug to prevent the screen cable socket from becoming loose.
③ LVDS line disconnected, replace with new LVDS line
2、 The logic board is damaged, and the flower screen is mostly caused by a fault in
the gamma circuit of the logic board; Replace the gamma chip or replace the logic board.
3、 The motherboard chip is damaged, so it is best to use a through board to check
the screen during maintenance, confirm the screen fault, and then repair it.
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