iM 4,1-14,4 iMac 27 (2011) - Displayport power got reversed

[Thunder66]

Hi,
I'm trying to repair a mid 2011 Mac 27" with the graphics reflow this past few days, after everything is put back, the screen doesn't come up, not the backlight, nor any graphics on the screen. I double checked everything, and realized I may have got the displayport power plug from the panel to the motherboard plugged in reversed! (the plug in the picture below)
Now after i put into the correct orientation, the screen still doesn't come up. THere's three diagnostic leds on the motherboard. Anyone know if I burnt my panel? Or maybe the graphics card bake didn't work out?

Thank you!

 

[Nguyen Duc Hieu]

Hi,
I'm trying to repair a mid 2011 Mac 27" with the graphics reflow this past few days, after everything is put back, the screen doesn't come up, not the backlight, nor any graphics on the screen. I double checked everything, and realized I may have got the displayport power plug from the panel to the motherboard plugged in reversed! (the plug in the picture below)
Now after i put into the correct orientation, the screen still doesn't come up. THere's three diagnostic leds on the motherboard. Anyone know if I burnt my panel? Or maybe the graphics card bake didn't work out?

Thank you!

View attachment 2329194

The baking is not supposed to be work out 100%.
My successful rate was 0% (0/2), one on professional reflow station, one in my own infrared grill oven. I quitted rebaking since then. Buying a known to work graphic card is simpler to me.