I’m hoping someone can help me. I set up my parents Vizio TV model E321VL with a Panasonic blu ray player DMP-BD871 a number of years ago so they could watch Netflix. It worked but was a little slow in hooking up. Today I ran a “firmware update” on the blu ray player and now the Vizio says No Signal when I select HDMI. Before I did the firmware update, it worked fine. Any ideas ok how I fix this? Any advice is appreciated.