1st post here guys hi to all,hope somebody can help me out not sure what forum to post so here goes,

i recently got sky tv installed combining with my video machine and my dvd machine,up until i got sky installed my dvd machine was working perfect then a day or 2 after it was installed i switched my dvd machine on to watch a movie and now my picture colour is all distorted the picture is there but colour very poor looking,someone gave me advice to open up the both ends of the dvd scart lead and snip number 10 on both ends ive not done this as not sure if its the case or not to do this,hope someone can help me out if this is right or not