Chosen Solution
So, decided to take a look at my iMac. A few years back I accidentally damaged the LCD display when I opened up the device (wanted to replace my HDD). I think the problem lies with the LCD connector (surprise, like most of the questions, already asked). Back in the days, I bought a new cable, because I noticed the pins were destroyed on the cable. But couldn’t get it working with the new cable, unfortunately. And now I want to try to repair it an maybe use it as an extra desktop. I honestly think the problem lies in the pins in the socket at the motherboard (?), but I can’t really see the pins cleary because of the socket itself. Is there any possibility to get to know if the problem is in the socket? And if it is, can I repair it? Thanks in advance! Update (03/19/2018) I will provide you with a picture of the socket. Maybe this will be some of help for you guys, as the response is not as what I hoped. The pins however, don’t look that bad at all… 3/4 of the LED lights work, which means something is indeed wrong with the connection. Anybody got a plan how to troubleshoot what the problem actually is Update (03/19/2018) External monitor works, could actually confirm the GPU was working because I heard the start up chime. Would you say this one is broken?, considering the fact this iMac is no longer in use, i might try to repair it. But it does not really look broken to me, therefore, it’s hard to find the actual of the LCD not working.
Update (03/20/2018)
Front side, hopefully, this is less blurry
The external connector. This is the one I replaced back in the days. Some of the pins were destroyed.
Tried as good as I could to take a photo of the slot from the upper side of the iMac. It looks like however, one pin is a little bit displaced?
Hook it up to an external monitor to help isolate the issue. If the external fails to work, you probably have a GPU issue. Yes that display to logic board connector on this machine is just not designed well and I have damaged a couple.
