Connecting the home button cable makes the screen turn off?
So, I was fixing a water damaged phone - I attach a screen to test the screen working on the phone (with only the two connectors - not the home button connector) and it works fine.
Then, I install the home button on to the screen and connect the flex cable to the motherboard connector (the one for the homebutton) and the screen doesn't come on.
But then, if I disconnect the home button connector the phone comes on as usual.
Then if I connect the home button connector whilst the screen is on, the screen just turns off?
What could be the problem? It works fine with a different home button, just not THAT home button - but that one's the original one!
Just to clarify which connector I mean - it's the one that the guy is prying off in this photo:
Is this a good question?