Leave protective plastic sheet on display until everything is working. This will protect the screen from any marks caused by solder splashes, etc.
Be careful when inserting the LCD module. Apply even pressure on both ends on the 40 pin header whilst guiding in the two 2 pin connectors.
Adjusting C6 doesn't seem to make much difference, possibly because C6 is a small percentage of the total capacitance (C6 + C7).
To adjust horizontal position SEL trigger slope, one more press to trigger level and then one press (right cursor now back to red). Then use + and - to adjust when looking at the green bar (top middle of screen) .
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