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You should get similar values on both lines, you've posted a big difference.
That could be the reason of no backlight; as it is controlled through I2C_BKLT_SCL/SDA bus.
Are the last values taken with LCD connected?
In such case, pot voltages without LCD too.
R7050/51 must be 0 ohm and R7052/53 2.4K.
Sorry for misstyping, I meant SCL, not SCKA.
I can only use aprox 60% of my eyes...
But I'm also not getting any internal DP because the 2 displayports on the side are not exporting any image. Only the HDMI on the other side of the laptop is working.
I will get you the other measurements this evening.
Well, I went back to check my work and as I was checking continuity on the lcd connector pins, it looks like i have a short to ground on I2C_BKLT_SCL.
Going to have to backtrack and try to find it. I'll try to tomorrow as it isn't my work as I removed the lcd connector and jumper wires and the short was still there.
"R7752/53 are not 2.4K they are 1.59k"
Is normal to get lower value indications for onboard measurments.
An o-scope can show if there is activity on I2C_BKLT_SCL/SDA and EDP_BKLT_PWM lines when backlight keys are pressed.
At least check if EDP_BKLT_PWM DC level varies.