My Problem
When waking from sleep. backlight is intermittent as display is raised. Examination shows that the image is always there, but the lighting is dependent on display/top cover position. But, the inverter cable may not be the problem. Could be loose/dirty plug, etc.
My Fix
Haven't replaced cable yet, as the computer is useable. Will do when I have time. Will check existing cable and if it's OK will send the replacement back to IFixit, along with another G4 laptop for parts.
My Advice
Don't know if this is a common problem; will see how it does after inverter cable replacement.
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