Apple Macbook Pro Aluminum 13-Inch Black Laptop Keyb Technical Guide - Page 77

2. Verify display listed in the Yes System Profiler's Graphics/ Displays device tree is not disappearing intermittently No (refresh System Profiler to observe). 3. Backlight flickering may be Yes related to EMI foam gasket shorting some pads on logic board or some pins from LVDS connector. Follow Take Apart instructions to remove the EMI foam gasket from LVDS cable No and retest. Verify if flickering is gone when operating without foam gasket. 4. Inspect and reseat the LVDS Yes cable and camera cable connection between display and logic board. Also test if brightness setting is a No contributing factor. Has flickering stopped? 5. Substitute a known good Yes display assembly to test logic board video output. Has flickering stopped? No 6. Verify the source of the noise Yes is the electrical as opposed to mechanical. Audio noise should not be a concern now that LCD components are all solid state devices including No LED backlights. Power and LCD panel ID are OK. Go to step 3. Go to No Video symptom code flow. Issue solved. Replace EMI foam so that it covers the connector frame, and does not touch any part of logic board or connector pins. Go to step 4. Loose cable connection. Issue resolved. Go to step 5. Replace display assembly. L06 Replace logic board. M04 Noises that are not audible from the normal user position are considered acceptable. Return unit to the user. Noise from another source. Go to Noise/Hum/Vibration symptom table.. 2010-06-15 MacBook (13-inch, Aluminum, Late 2008) Symptom Charts - Display 77