I've been having problems with the signal (8) on my pansat 2500 puff.
I did a blind scan and reloaded the channels, worked for a couple of days and now the problem is back... quality is rapidly fluctuating between 40 and 70 percent.
check your connectors at your lnb and switch then try a barrel connector instead of the switch on your echo 8 line that will tell you if its the switch