Fix Your Stuff Community Store

Repair and disassembly information for the Samsung Galaxy S21 5G Android smartphone, announced and released in January 2021.

63 Questions View all

Options

Screen won't turn on after new display cable / new screen

Hey guys,

I replaced the screen in my girlfriend's S21; the touch was going whacky. In the process of getting the back off of the phone, I cut the display cable with a guitar pick. So I ordered a new one off of Amazon. It is identical to the one that was originally in the phone. Anyway, I put everything back together with the new screen, but I cannot get any picture or touch functionality at all. The screen came from iFixit obviously. What can I do?

Answer this question 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
Most Helpful Answer

Options

Hi @foothand

Does the vibrate motor buzz when you first turn on the phone?

Here's the troubleshooting section from the service manual that may help.

Go to Sect. 8-4-1. Power on, on p.8 (of 67 pdf numbering) and follow the flowchart paths and see how far you get.

Use the search function in your browser e.g. if Win OS use Ctrl + f, and type in the component ID of components shown in the flowchart to find their location on the board layout diagrams in the guide. You will have to zoom in a lot to see them. ;-)

Unfortunately, there's no parts list in the manual so if there's a faulty component it may be difficult to find the correct replacement part.

Was this answer helpful?

Yes No
Score 1
Add a comment

Add your answer

Austin McDonald will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 4

Past 30 Days: 4

All Time: 28