I seem to be having an intermittent problem with my DB 500s.

i plug it into my sky dish and it will find the channels and i can watch them no problems. then all of a sudden the agc goes to 0%, the ber raises and i can view nothing.

if i leave it on for a while it may come back.

also it sometimes doesnt work wheh i turn it on at all.

anybody any ideas on this?