You didn't say which TO you have but I can guess it's early one between 47-53. The early ones had steel hinges that rust and do really bad things to the reception. The last ones like the Y600 had brass hinges. You have a few options that you can try. Carefully take the top apart and clean the hinges.. really a dicey job, spray contact cleaner into the hinges and try to clean it as well as you can, use the Wavemagnet and cable which bypasses the hinge problem or a combo of the above. My 49 is rusty and sometimes just a tweak of the hinge fixes it for the time I'm listening. Hope this helps some.
Mike