Imac late 2009 black screen

[koden]

Hi Forum

I have a imac that I have upgraded with SSD disk.
That worked fine.

But 1 month later it suddeenly goes black when turning on.
Sometimes I get picture and then it goes black after some minutes.
Sometimes it's black from start.

NVRAM reset and other commands have been done.

I have tried to switch LCD panel with my other imac...
But same issue.

I have tried install new SSD disk.
same issue.

So I would say the issue must be hardware issue.
Coulkd it be the LED board as I can read others have had issues with?

 

[007 Junior]

Could be a faulty video card, if you own a model that has dedicated graphics. I'm currently in the progress of repairing a Late 2009 iMac and discovered that the screen stays black when no graphics card is inserted on the logic board or when the video card is faulty.