I have new Helix 10 SI Mega.  Everything has been working fine and really was liking the Mega Imaging...until Sunday.  I attached a picture of what the screen looks like now.  Left side works great and has good quality images.  Right side is pretty much all black.  I checked the transducer placement to make sure it didnt move, made sure the brackets were tight and checked level.  The wiring looks fine but I can only trace is from the transducer up a few feet until it goes into the boat.  I have multiple units networked so I switch to another unit and it is doing the same thing so it is not the head of the unit.  Any ideas?  System is only 3 months old, are people seeing problems with the transducers?