XDJ RX3 CANT TURN OFF SYNC

Hello guys,

sometimes ive got a big problem with my RX3.

After a while i cant turn off Sync, so the Button is always on but the Sync-Function does not work. Also i cant change Master-Deck.

For Example:

I play a track on Deck 1 (MASTER&SYNC ON).

I load a new Track on Deck 2 (SYNC ON).

So the BPM is synced but Sync-Function does not work.

After Transition so Deck 2 is now the Master-Deck, the Master is still active on Deck 1.

Now if im loading a new Track into Deck 1 (Slave), the BPM of current played (Master) Track on Deck 2 is synced with the BPM of the new Track on Deck 1.

I can press any Button, i cant change this MASTER/SYNC - setting when i got this issue, i have to restart the Controller.

I´m using the Rx3 for Club Gig´s, so thats really embarrasing...