iPhone 5c Red lines when turning on

[JamyD]

Good evening,


I've recently changed my screen on a iPhone 5c (due to the previous screen was cracked).

Now when I turn it on using the power button, redlines appear and nothing else. The phone vibrates due to getting messages and emails. But I'm now at a lost, I've changed probably 15+ screens before and this has never happened before.

I tried three other screen and got the same result. I've also plugged and unplugged the battery and tried another battery at it's place.

Any advice on what next steps I should follow?

Thanks

JD

 

[Coastiejoe]

Generally, lines on a LCD is a bad LCD. Are you using a different LCD when changing the screen or just the top digitizer?


Sent from my iPhone using Tapatalk

 

[JamyD]

I'm using the screen and digitizer. I did my friends the same day same batch of screens and his worked no problem.

 

[Coastiejoe]

I would suggest swapping your friends onto yours. If it works, bad LCD. If not, issue with the phone. DFU reset time at that point, nothing to lose.


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[JamyD]

Alright did the dfu reset and still same result. I tried a different screen I had lieing around that I know works and still same result.

I'm not one to go down the board replacement road, I'm just getting the steps prior to that out of the way.

 

[Coastiejoe]

If you KNOW you used a good LCD., then I speculate that the board was damaged during the swap. I say this as, each time you used a new screen the odds of not fully plugging each in are low. So we KNOW we have a good LCD and not a plug issue. Pretty much as to be the board at this point. If it were me, I would pull a screen from a working phone to eliminate all options except the board.

 

[scifan57]

If the motherboard does turn out to be faulty it maybe easier to get a replacement phone instead of trying a repair.

 

[Coastiejoe]

I agree. The board is the highest price item within the phone. If you have a good board, you can easily build a good phone. But without a good baord, you have a paper weight.

I buy busted up phones all the time just searching for good boards.

 

[scifan57]

Buying a used motherboard also carries the risk that the motherboard may have been taken from a stolen or blacklisted iPhone. If you put such a motherboard into your phone you could end up with an iPhone that won't work because it's been blocked and/or blacklisted.