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g) HDMI with no sound
Check if R187 3pins output square-wave, and check if G4 outputs signal normally.
3.5 Abnormal picture
a) A certain differential wire pair of LVDS of X50 (RX0+/-, RX1+/-, RX2+/-, RX3+/-) is abnormal,
which may lead to lack of color or color splash.
b) The DDR matching resistor row of N2 is rosin joint, which may lead to lack of color or color
splash.
