My dear , I am using this box from 7 months . In starting i faced lot of problems such as Some channels are working fine but few showing bad result broken signals. I much surprised because I don't understand why it happened . If the problem is only about signal so why another channels are working fine . So I though might be it appeared from head-in .
But.... once upon a time to resolve this issue I bough a cheaper amplifier ( china ) & put directly wire from output to box with out having any other joint .
I did many practicals and found the result if the signal from your cable wala have strong strength then some channels might be showing broken result or if you joint another wire simultaneously for your TV so that also effect on the result .
Right now 98 channels are on air and no any single channel having such problem . So its mean this problem is not from Solo end .