When I tried to fire up my SMS it didnt seem to work. Ran through autotune on telly and it didnt pick anything up. Tried swapping out the power supply with a mates, and same with the rf switch. Nothing seemed to work. So I picked up a second hand one on Ebay for $40 delivered (with a few games I didnt already have too!) and have struck exactly the same thing. Is there any known issues with using SMS with newer TV's, does anyone know the frequency that they tune into? As there is no power indicator I have no idea if the two units even work. I can test power supplies and will do as soon as I find my multimeter.... What else can I try?