Thanks to an alert arrivataci few days ago, we discovered the special software for Galaxy NoLED S. We're testing the software by first release (01) that had some flaws. A few hours is also available, NoLED_03 that is much better idea now and then.
The utility in practice adds a little red square where notifications lost on the screen. The square will become visible to screen off, thereby providing standby. Reactivating the screen (no need to unlock the phone) Led disappear. Version 03 allows the LED to move so they do not always turn on the same portion of the screen.
Source: (XDA Developers)