I too had the problem, that the thread (tutorial ' Display Assembly ', Step 13, yellow screw) separated from the logic board. Actually I think it was broken off when I opend the phone (crshed display due to droping). You can see this here: position and removed screw and thread: I decided to assemble the phone without this screw and thread. Up to now I did not have any abnormalities (well, I had the proximity sensor not working problem, but I think this is not related). As an electrical engineer I consider it at least as very uncommon to use a shield or antenna as a conductor at the same time. Reasons against are: 1) bad testability of the board while not integrated into handy 2) the use of a screw is not as reliable as a soldered connection. But of course there remains a chance they do it anyhow, as space is really crucial inside such a device! If the shield really has a jumper function at the same time: What kind of malfunction have you found in devices without this screw?

... continued from above

Some people report success with the above steps, but some of them had the problem showing up again after hours or days. Beside the power supply there is one main second possible reason for a defective 245B: the CCFL-tubes itself. They just wear out after many hours of usage. So if a Samsung 245B shows a black screen in 2016 take this possibility into consideration as well. There are spare CCFL tubes and LED refurbishing kits for displays on the market.

Please note: There are two different boards for the Samsung SyncMaster 245B Power supply. The one shown here is the BN44-00173A (Board A), the alternate one is the BN44-00195A (Board B).

There are 3 main problems with the power supply

- defective capacitors (sometimes, but not always bulged top)

- defective resistors (sometimes, but not always looking burnt)

- defective fuses, simple to check

There are reports of other defects as well! Sometimes it helps to completely resolder the power supply board. Board A is far more likely to show one of the above defects than Board B. For Board A you find much more information and repair instructions. I think Board B is the younger one (redesign of Board A) and less likely to be defective. For this reason you hardly find instructions for Board B.

Board A can still be purchased. Price is usually $60-$85 + shipping. At least some of those boards are not used but used. Read careful...

And Board A is still available from my Samsung repair center.