LCD
Fault phenomenon; screen tearing
Fault analysis; The main problem of LCD screen flickering is concentrated in two directions.
1、 Damaged LVDS cable, poor contact, etc.,
① Remove the LVDS cable, check the copper platinum interface for
blackening and oxidation, and clean it with alcohol or eraser if there is any.
② The LVDS cable interface is complete
Okay, press the screen cable connector with your hand and observe if
there are any changes in the screen. Any changes are mostly due to
loose or poor contact of the connector. 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.