EOS Rebel T7 Green lines in LCD monitor

[Tintype_18]

Taking some photos for a magazine. However, and never had this before, the LCD shows a green lines about one fourth from the top and bottom. Lines don't show on the viewfinder. I experimented with jpg and RAW; the lines don't show on the photos when downloaded. Camera is Canon T7 with the 18-55mm lens. Lighting is Curly Q bulbs with soft cloth covers. Camera was checked for fluorescent setting  plus verified other settings to be compatible with the setup. Three cards were formatted before use, JIC. Thought I would start here. TIA.

[Tintype_18]

OK, will see what Staples has. Thanks two bunches.

[kvbarkley]

And it is a mini HDMI connector, not the full size, so a standard HDMI to HDMI cable won't work.