Funky display, external monitor doesn't work
Display used to work, now can’t see anything but colors are visible in cracks (see image). Want to replace display. Hooked to my TV via Tb3 port and Tb3—>mini-display connector—>HDMI. NO image on TV, not even the lines I can see on laptop (see image) and TV says “no signal”.
Will this machine not display on my HDMI TV? I’m concerned that this mean something besides the display and/or cable is bad? VERY recent (when display only partially gone) hardware diagnostics run and they said all was OK. Suggestions??
Sorry. Tried Command-F1 and it didn't switch to TV. TV is Panasonic Plasma, NOT 4K.