I’m surprised to hear that about your experience with TV warranty with JL, lucky I’ve not yet had to have any of my TV’s sent back to be repaired so can’t say how good their warranty is,
but till you mentioned it I’ve not heard anyone complain before about JL, now that you’ve mentioned it I’m sure if I do a google on JL there might be lots more
the one thing I did have repaired under warranty at JL was a Panasonic camera, it was just under 2 years old when I went in to explain the problem, they asked me if I still had my receipt for the camera, when I told them I more than likely bind it when I got home with the camera, they looked up my name on their computer and got the details from there, and two weeks later I returned to pick it up, all under warranty