A family friend asked me to replace a TV ariel point as the cable kept dropping out of the old one,and on certain channels the reception was poor. Changed the ariel point and it has improvedthe reception except on ITV channels. ITV 1 isn't too bad but ITV 2 and 3 are poor. The picture often freezes or breaks down into rectangular pieces. Now I'm the first to admit I ain't an ariel installer or audio visual expert but is there anything I can check/alter to give a beter picture. The oher TVs in the hous are fine. It's not the TV (well I don't think it is this tv has only recently been purchased as new). The TV is for a disabled boy n the family haven't got much money to get in specialists