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I made it all the way through the instructions but when I replaced the screen the screen shows nothing but static like an analog tv with no signal. I know the screen wasn’t damaged during disassembly because I left the phone powered on up until I disconnected the screen and it continued to show my home screen with no errors. Did I do something wrong? Can I fix it?
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Same issue im having. Right next to the display connector are small line filters. You may have broken one off. I thought my new screen was dead on arrival but did some digging. You can either get a filter from a donor phone or replace the entire motherboard.
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I learned that yesterday after watching a couple Youtube videos. I took it in to a repair shop, no way I can attempt this repair myself. He said he could do the repair but it would cost around $150. For that level of cost I decided to upgrade to a new phone. Really wish I would have known about those little modules before disconnecting the screen.
I had this same problem when I was trying to change my battery just a few days ago.
The cause was as @christophe34554 described: I had broken off one of those small components on the motherboard near the display connector when I pried up the connector. This was the leftmost of 5 identical parts, each of which has 4 terminals.
For repair, I tried to figure out what they were. They were tiny little things (about 1mm by 1mm square). My trusty DMM showed a resistance of around 3Ω through them on the other 4 intact components. I replaced the broken part with a two separate 0201-sized 3Ω resistors, and that got the screen working again.
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