Apple MD094LL/A manual Panel with correct backlight, Logic board and LCD panel, Display

5.	Shine bright (low heat)	Yes	LCD panel functional but
	flashlight onto front of LCD.		backlight is missing or
	With computer powered ON		dim. Remove LCD panel
	verify if a faint image is visible.		and inspect and reseat the
			following cable connections:
			-Backlight power cable
			between backlight board and
			LCD panel.
			-Vertical sync cable between
			backlight board and LCD
			panel.
			-DC power cable to backlight
			board and power supply.
			Replace any damaged cable.
			Reinstall LCD panel and go to	X03
			step 6.
		No	No image nor backlight.
			Go to step 7.
6.	Power ON system. Verify if	Yes	Issue resolved.
	image is now visible on LCD
		No	Replace LED backlight board.	M04
	panel with correct backlight
			Retest. If issue persists, go to
	level.
			step 7.
7.	Inspect and reseat internal	Yes	Issue resolved.
	DisplayPort cable (between
		No	Replace internal DisplayPort	X03
	logic board and LCD panel).
			cable.
	Power ON system. Verify if
	image is visible on built-in LCD		If issue persists, replace LCD	L03
	display.
			panel. Run Apple Service
			Display Utility to verify the
			resolution of issue.
			Enter the resulting verification
			code into the “Notes” field
			of GSX and return system to
			customer if repair is complete

2010-09-09 iMac (27-inch, Mid 2010) Symptom Charts — Display  54