Verified answer

If you have programmed THREE universals and the ORIGINAL remote doesn't work either, you have a bad Infrared reciever or bad port on your Microprocessor....

Time to call a TV Repair Shop....

Look under Television - Service or Repair in the Yellow pages.

Remote Controller of TV

try asking panasonic service center about your remote. they should be the one to solve your problem without spending more money on buying new universal remotes.

Try getting up and changing the channel.