Fix Your Stuff Community Store

Repair information and guides for the iPhone 6 that was released on September 19, 2014. Model Numbers: A1549, A1586, and A1589

4994 Questions View all

Options

Screen flickering, white and blue lines

Hello, I got a iPhone 6 in these days that had screen flickering and touch faliure sometimes and had white or blue lines over the screen. So obviously I replaced the screen first and turned it on and it still had some white lines over the screen. And the logic board got verry hot where touch ic's are located. I figured it would be a bad Mason so I replaced 2 times already with new ic and also reballed cumulus and still the exactly same problems. Not sure exactly which part is getting so hot, but that place gets too hot to touch just like before. Sometimes when I turn it on, the touch works and other times the screen gets white and blue lines all over and touch is not responding. Any ideas what to look for next?

Answered! View the answer I have this problem too

Is this a good question?

Yes No
Score 0
Add a comment

1 Answer

Filter by:
Most Helpful Newest Oldest
Chosen Solution

Options

I would check the power rails feeding the Touch IC’s to see if everything measures okay. Also look for bridged components that could be causing a partial short, hence excess current.

I would check the coil directly above Meson, L2401. It has a tendency to crack or have a bad solder connection as it is on the fault line as well. Whenever I replace a Meson, I always reflow it to be certain. If it is cracked, I would replace it.

Try applying some freeze spray (locally) to see what melts first, that may give you some guidance.

Was this answer helpful?

Yes No
Score 2

2 Comments:

thank you for the reply. I replaced the coil and now it seemed like it worked fine so i handed it back to the customer. And guess what, now the flashlight doesn't work anymore. Anyway, he left the flashlight switched on even though it didn't work and after a few days, the screen flicking happened once again and while the screen flickered, the flashlight worked. Once the flickering was gone, flashlight doesn't work anymore. I'm quite stuck on where to look next.

by

On the reverse side of L2401, you will find the LCD connector and close by the chestnut and strobe driver IC. it's possible you applied too much heat and caused some issues elsewhere.

by

Add a comment

Add your answer

Hernando Berg will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 1

All Time: 151