After 5 hours of operation burned down!

Wanted to use the device for transmission between turntables in the next room and stereo system in the living room .... The first test installation were quite OK, but after the cables are somehow lying around, the devices are then migrated times in the drawer. So - now even wired the receiver neatly in the living room ... was quite euphoric .... Suddenly funny smell in the transmitting device (which is thankfully been free - so no heat accumulation possible etc) ... And I see there really is a small column of smoke .... ascend immediately disconnect the power cord. Résumé: 5 hours - a few months in the Schu charge, so that the warranty has expired - charred transmission part.