The LCD connector on those is taped down with copper tape so I do not believe it came loose. Does it still make any noise when you plug it in or lock and unlock it? Chances are you need a new LCD/Digitizer assembly. This is a tricky one to replace and I recommend seeking professional help if you are not experienced with this sort of thing.

Either your LCD connector came loose or your LCD/Digi ASSY needs to be replaced. I suggest pushing really hard on the top/mid-right portion of the screen and then performing a hard reset using the Sleep and home buttons.

If a hard reset or putting it in dfu mode does not work.....White screen either is a bad lcd or a bad logic board. I have seen allot of bad logic boards in the 2nd and 3rd gens.

if you have dropped it in water which i did leave it on a radiator for a while it seems to fix it well this worked for me anyways :)

Hi! I had the same problem, my iPod fell on the floor and the screen is white as i turn it on.

iTunes recognizes it, it makes sounds as I unlock the screen. Tried to restore it, but nothing changed...

I´ll try the suggestions above.

Tks.

Hi!

I tried the two suggestions above and they didn't work....

Does someone have any idea what might be the problem?

It works fine with iTunes and does unlock, but the screen is white with a gray stripe on the side...

Thanks for any help!

Sounds like the connection is bad or the lcd was damaged during drop.

Butter Face.

If you would feel comfortable following the steps in this guide right here then go for it, it's almost guaranteed to solve your problem.

Installing iPod Touch 4th Generation Front Panel Replacement

If you want to go ahead with it you can find your part on eBay here:

http://www.ebay.com/itm/LCD-Touch-screen...

if you have a black one. If you have a white one,

http://www.ebay.com/itm/270945846612?ssP...

Best of luck. It's not as hard as some people say. Just be careful and steady, don't push or pull too hard, and use common sense.