iMac late 2013 - LCD Display is dead

Eccofreerider

macrumors newbie
Original poster
Aug 17, 2017
3
0
Hi, guys!

I've problem with my iMac. LCD Display shows black screen (no picture at all), external display works correctly through Mini Display Port - HDMI. 4th LED doesn't lit up, only 3 LEDs are lit up.

I've already changed LVDS cable and LCD Display - problem still exists. But if problem is a logic board or graphics - how external display works?
 

opeter

macrumors 68000
Aug 5, 2007
1,680
602
Slovenia, EU
The external monitor/display shows the image without problems?

What do you mean with "4th LED doesn't lit up, only 3 LEDs are lit up."? What LEDs?
 

Eccofreerider

macrumors newbie
Original poster
Aug 17, 2017
3
0
The external monitor/display shows the image without problems?

What do you mean with "4th LED doesn't lit up, only 3 LEDs are lit up."? What LEDs?
No problems with external monitor.
LEDs I have mentioned are indication LEDs on logic board.
 
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