More advice about how to measure in stores can be read here: 
https://www.dropbox.com/s/l4bh00td5pgr8ce/low_EMF_TV.txt?dl=0

Warning!!
Some people have damage their TV beyond repair trying to open it to disable Wi-Fi. Don't do it without professional help of someone who has experience with your model.

Useful websites about TV's:
https://www.displayspecifications.com/
https://www.rtings.com/tv/

The older Plasma TV with the high amount of dirty electricity was this model:
LG 50PQ30
https://www.lg.com/ca_en/tvs/lg-50PQ30-plasma-tv

Most tests in this 2022 video were done in 2018.
(This video is an edited re-upload.)

Tools used:
Tecsun PL-310ET:
https://www.aliexpress.com/item/4000189002006.html

Sony ICF-P26:
https://www.sony.com/electronics/radios/icf-p26

Dirty Electricity meters:
https://greenwavefilters.com/dirty-electricity-meter/
https://www.trifield.com/product/em100/
https://www.geotellurique.fr/84-detecteurs-d-electricite-sale-cpl-linky

Gigahertz ME3851A:
https://gigahertz-solutions.com/Measurement/Low-Frequency
https://www.geotellurique.fr/6-detecteurs-basses-frequences

Esmog Spion:
https://www.esmog-shop.com/messtechnik/endotronic/

EMFields pocket PF5
https://safelivingtechnologies.com/products/pf5-pocket-emf-detector.html
https://www.geotellurique.fr/6-detecteurs-basses-frequences

Star Wars rhythm (read the description of that video):
https://www.brighteon.com/6b7a829a-7997-4974-a39c-508e8ff25c21