i am using the airtel digital tv set up box for more than 10 days , i am getting power supply through audio pins, video pin, dish antena cable on the rear side of the stb., due to this my digital tv has gone dead, my electrician informed me there is a problem in the stb, or there may be some problem in AC/dc power adopeter supplid by the airtel , requested to all guys to check up their stbs , tell me solution, but however audio, video is working, but getting electic shock when i touched audio video pins