I have an older Mitsubishi TV, model VS-50605, that has been giving me problems. I am not able to consistently get a picture and/or sound through cable. All my other inputs work properly. I can play my Xbox on it and my DVD player works fine. Every now and then I get sound but no picture. On the rare occassion I get a picture through cable, it only lasts about 15 minutes at the most and then it cuts off. I've tried switching between ANT-A and ANT-B but had no luck resolving the issue. Any suggestions?

U have a pay boxes from those Telicoms,cables or satalites compannies?Yes,tries unplug,replug those boxes back about an hour later for it softwares to updates it softwares,should solved this problems or if not trade it in for a new box.

Hi,
I've suspect a loose connection on your unit. I would advice you to check the cable wire for bad connection. Make sure that you have a good source of signal from your cable provider. Bad solder joints on the tuner section is also to consider but the problem is, this is internal, If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work in there if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.
Hope I helped you. Have a nice day!