Macbook Air bad screen - or...??

This is replacement screen on A1466 macbook Air 820-00165-A. Half the screen image is dim. Did I get a bad screen? O'scope image is of LED_RETURN_1-6. Of all remaining pins - only I2C_TCON_SCL_R = 3.3 VDC. backlight is 24.66 VDC.
 

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2informaticos

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If all 6 return lines give the same signal, then could be the screen.

"Of all remaining pins - only I2C_TCON_SCL_R = 3.3 VDC"
I don't really what you mean to say.
SCL/SDA lines should both have 3V.
If not, check R8361-64 and diode mode to ground.
 
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