Television and Home Theater

I own this tv over 15 years every thing is still working well except I can not watch regular tv channel directly the acreen will not run smooth but if I pass it to a vcr then adjust channel from that vcr it is ok plus I can play all other dvd or sattlelite by rca plug all it work very well some friend told me it come from the antenna. Can I buy that part and replace by myself? Pleasegive me some suggestion thank you.

Turns on there is audio, but no video, At first the video would go off & on, now video went out completely. Any suggestions from expert tech,s out there in Plasma ? I am more experienced in projection, trying to catch up with the new technology Plasma, LCD & DLP. Any tips appreciated !!!

I have two 42" inch Toshiba Plasma, same problem.

I have a Hitachi 50VG825 that's a year and a half old.  Turned on the set today with the remote and the only buttons that operate the tv are the power and volume buttons.  Same goes for the buttons on the panel.  I can't change the channel, inputs or even access the menu screen.

Can someone help me please.