pixalted screen and jittering

[andy585]

has only recently happened its really bad and unwatchable i tryed my brothers dreambox hd800 and picture was perfect but when i use my m3 or new f5 its usless i have also noticed the signal jumps about and the lights on the front of the boxes the green one flashes constantly what could this be that the dish out or faulty lnb also its connected to a communal dish

please help

regards andy

[digicon]

you can rule out the dish or LNB as you already stated it works perfectly fine on your brothers DM800.

Must be the box

[andy585]

ok i have noticed that the siginal drops to the 40-45% intensity and signal 10% and goes grey for a split second then back up to 90% intensity and signal is 75%