Chosen Solution
Hi, At first, my backlight stopped working (I can see the screen with shining a torch through the logo). So I took it to a computer repair shop, he opened it up, plugged in a second screen through the LCD screen connector on the motherboard and that screen was working. Oh something wrong with my screen I thought.. But then he plugged in my screen again, and voila it was working again.. 3 days later, it stopped working again. So I opened it up myself and unplugged the LCD connector and plugged it in again. Working. For 1 day, this time the screen started flickering, like flashing, at the same time when it was flickering I decreased the brightness on the screen, and it stopped flickering and screen was working normally again. Same story again 1 hour later, decreased brightness, working. And now, the next day it completely stopped working it seems like. I tried unplugging the LCD connector and plugging it in. No backlight at the moment, screen still works. What could this be? Backlight fuse? Capacitors? Bad LCD cable/connector? I can’t see any kind of visible damage nor liquid damage. I’ve done as much research as possible but can’t seem to find anyone with similar problems as myself with the screen working every now and then.. I don’t have the right tools to remove the logic board. I can’t seem to find the backlight fuse.. is it on the “not-visible-side” on the A1502?
It’s not easy to diagnose such issues without known good parts and some troubleshooting skills and tools. If it was the screen cable you would probably get some odd backlight behaviour when you move the lid. If that doesn’t happen at all, a problem with the cable can almost be ruled out. The fuse doesn’t usually show intermittent behavior unless the board suffered some injury in the past (liquids or bad bumping). On top of that when a fuse blows it’s because of other faults that have to be identified and fixed before a fuse replacement or it’ll likely blow again. Since you have someone next to you with suitable parts, I’d think the most reasonable thing would be to hand them over your Mac and let them take care of it, unless you want to invest money in parts and tools and start a try and error repair attempt.
