Solution to "no HDMI signal" black screen on TV kind

Here is what happened when I did as you suggested. I got the following message
“ldupree@ssh-ldupree192168147 ~ % ssh root@192.168.1.47
root@192.168.1.47’s password:”

When I tried to type in the password, nothing happened. No characters were displayed. I hit enter and got

“Permission denied, please try again.
root@192.168.1.47’s password:”

I remembered I changed the password when I initially set up CreELEC so I tried my new password and I got the following

ldupree@ssh-ldupree192168147 ~ % ssh root@192.168.1.47
root@192.168.1.47’s password:
##############################################

CoreELEC

https://coreelec.org

##############################################

CoreELEC (official): 9.2.1 (Amlogic-ng.arm)
I then typed in what I was instructed to earlier and below is what I got.

CoreELEC:~ # fw_printenv hdmi_mode

Error: “hdmi_mode” not defined

CoreELEC:~ #.

I feel I am making real progress, I feel like I am so close but just not quite there yet. Your help is really appreciated.