Facing TV Problems? Ask a TV Technician.
Hi and welcome to JustAnswer, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.Initially, re-confirm and post back with the complete make and model number of the "...samsung 55 inch hd plasm..."
Is the TV fully operational? ...when connected directly to an antenna? ...or satellite receiver?
Thank you for your kind understanding of automated-systems / machine-generated followups, ads & offers.
...checked / replaced the HDMI cable?
Even if just for test purposes, have you tried straight A/V - analog connections from the Panasonic to the Samsung?
Please see above post / reply.