why everytime i change the channel some disapear.why is that?
then they dont come back.what should i do.

have seme problem and the message "scrambled or bad channel ".

check your signal, if its not maxed out try to tune it a little bit, if it is maxed out check and tighten your connections

see if that helps <_<

ok i'll try that i'll be back and i'll let you know how it turned out.thank you