What parts to move from the broken screen?
Hi, I have successfully replaced several Touch 4th gen. screen assemblies but there is something I am still wondering about. No one really mentions anything about the adhesive you need to put on a new screen assembly. I got those but always have a hard time figuring out how to use it. The iPod Touch 4g screen adhesive is a big part and you have to remove the middle area (I do at least). Then on the top of the screen there is a small metal latch (step 9 in the Touch 4g screen replacement guide) that I alway move from the broken screen to the new one. But the adhesive seems to cover that part so I what I do is I only use the left top part of the adhesive and use some of the spare adhesive to glue the latch on to the new screen.
So I wonder what others are doing with the adhesive and if they move the latch over to the new screen. I have a feeling the latch helps keep the screen in place better than adhesive alone.
Also I always take the small pad under the digitizer cable from the broken cable to the new one. You can see it in step 13 in the same guide. It puts some pressure on the connection I think. This should have been in the guide.
Take a look at this picture: https://www.dropbox.com/gallery/943721/1...
You see the metal bracket on the top of the original touch screen. I have not been able to find anyone selling a touch/LCD with this bracket. So I always have to move it over from the broken one.
And regarding the adhesive I found out that I can use the same adhesive used for iPhone 3G/3GS except the top sticker which you cant't really use. At the top you need to get on the bracket from the old screen and put a thin line of adhesive (i.ex. cut from the top iPhone sticker) along the edge. And you need small strips along the sides of the screen. You can easily cut that out yourself. I am going to buy a roll of the 3M 300LSE like this one: http://cgi.ebay.com/3M-Sticker-tape-Adhe...
Not sure if I need the 3mm or 2mm. Anyway there doesn't seem to be much instruction or help on replacing the screen assembly although there are some good instructions on disassembly like on ifixit.