lost colour on audiologic t.v x asda

[barrycollins2006]

well i had a bit of a tantrun with something on my television and must admit i hit the top of it not that hard but quite frim.
now ive lost all colour on every channel and built in dvd (combined)
ive took it apart and put it back together.
to be honest i dont know how to go about fixing it and its out of warantee at asda.
i would buy new one but id like to get this one fixed as i would have acchieved something.
im appealing to you all out there to help me by telling me what to look for and how to put colour back on.
its not a remote control thing the picture is perfect but will never be able towatch snooker again!!!

please help a newbie