i have an OFDM Modulator and suddenly it didnt give Output, then i have checked that modulator and found that it contains IF Converter Card which is faulty then i have checked that card, it contains one chip which looks like a Crystal or Oscillator(Well i donot know what it is.)the chip contains (S+M B576 KB/KN).i have serach from internet but i cant find anything.
if anyone knows about that part plz do inform me.