I ought to make a FAQ out of this.
Doing your own physical repairs on a cellphone usually ends up costing you a lot more than bringing it to a good repair ship and having it repaired right the first time.
This time you cut the sensor board. When you're fixing that you'll probably break something else. When you finally give up and bring it into a shop - and find out that it took them X number of hours to locate everything you broke and, just for finding all the problems, they want $500 - you'll understand why fixing it yourself is a bad idea. (And they won't give you the phone back until you pay the diagnostic fee - that's their right under the law, even if you can buy a new one outright for less. [Of course, a good shop will explain that to you before they start, and have you sign a paper that you understand what they explained.])
And this assumes that you can find a shop willing to work on a phone that you've already damaged. I never accepted that kind of work in any of my stores. Dropped it in water? I'd try. Opened it up and broke something? Sorry. I could spend a week before I found every last little problem - and that would buy 2 Note 3s with a C-note left over.
