Storm

Hi everyone, this is my first post on this fourm so please if youve answered this question a thousand times im sorry. I just picked up a 2600 the original with the 6 metal switches. The problem is I can get a picture on the screen and I have purchased the coaxial adapter that screws into the back of the tv where your cable wire goes but still no go. I was going to replace the rf cable itself but it is internally hooked up and cannot be removed unless I open the case. Is it a good idea to open the case and take a look or could you guys suggest another way to help me out please!!!!!!, im dyin to play here. Thanks Tony