Stuck in DFU Mode Error 4014! - Itunes Detects recovery mode.

I have looked everywhere for an answer on this and have had no results.

I replaced the screen in the IPhone 4s yesterday, After about 10minutes being plugged into itunes.The display went off and when I tried to turn it back on ITunes flagged it in DFU.

I replaced the screen with full esd earthing so I know I haven't static shocked the board.

I have sinsce tested the screen in another IPHONE 4s and the screen is working correctly, So I know the screen has not damaged the board.

However this has been previously repaired via another team so who knows.

I have no display or life from the phone.

Things I Have tried.

Restore/Update + IPSW Recovery on Laptop Win8

Restore/UPdate + IPSW Recovery on Pc Windows 7

Apple store( Premium resller ) Restore MAC .

These all resorted in error 4014.

I have tired several differnt cables.

I have tired a new Dock connecter cable.

I have tried 3 different batteries.

TinyUmbrella Will not Detect as itis DFU.

RedSn0W will not work correctly as in DFU.

ReiB00t also will not detect.

ITunes Re-installed.

Host file altered in windows.

Anti - Virus disabled etcetc.

Iphone was getting extremely hot during the recoverys.

Even though everywhere says this fault is a connection issue. Am I right in thinking this is probably a logic fault and is not fixable.

The last thing I am trying now is fully charging the battery in another Iphone 4s ( So I can monitor the charge ) Then I'll put it back into the " Dead " iphone and try and recover.

HELP!