Toshiba 37XV505DB Tv

I receive standard digital sky (not HD), the signal strength was at 90%, I tried PAL to RGB change etc etc and no matter what, On match of the day or live ford super sunday etc THE PLAYERS ARE BLURRED!!!!!!! They all look like the kid off the old Ready Brek advert. Close up is great. I tried the signal from the Toshiba built in digital receiver - shockingly bad I tried David Attenboroughs life on earth thro my standard DVD player - sometimes good sometimes poor. 3 seperate signals, although not HD nor Blueray are all LCD''s like this? Luckily I bought from John Lewis - its going back next week for a full refund - 28 days - thank God!