I have a install that has been running fine for 2 years. I have 3 video sources: 1 cable ( coax) and 2 satellites (modulated) running through a 3-way splitter (combiner)then 1 out to a CP da-500 amp then to the whole house splitter.
Up till a couple of days ago the image was perfect but now it is all fuzzy excluding the Sat channels. I tried going direct with the cable to the amp and the (by passing combiner) and the image is beautiful again. I swapped out the combiner but the same problem persists.

Anyone have ideas?