Last night I was watching the Oscars. I was a couple of hours in and Billie Eilish was singing her James Bond song (minutes before Will Smith punched Chris Rock) and the picture went out. I could still hear singing, but no picture. I turned the TV off and then back on, but got the same result, plus a sizzling noise. Eventually I noticed a pretty strong smell of burning electronics. The TV sometimes would have a darker than normal screen that I could reset by unplugging the TV, but this was worse than that and obviously something was physically wrong given the sound and smell. First I looked up whether it might possibly be under warranty. I had used my Best Buy credit card to buy it at Best Buy so I could get 6% cash back, but the Best Buy card does not double the warranty, which wouldn’t have helped either since it turns out I bought it more than 2 years ago. TV’s have been getting better and prices have been dropping, so I shopped a little to see what was out there, but it would clearly be $1000 to $2000 to get another 75-inch TV that was any good.
Then I started looking for other people who might have had similar problems. I did find some things, but not for this particular model of TV, the TCL 75R615. There are places that sell replacement circuit boards that can often fix the problem, but there are 4 main boards where the problem could be. The other possible problem source would be the LED’s that backlight the screen, which are harder to replace. It seemed like it would be the power board, given the sizzle and smell. It seems like the lower power electronic boards wouldn’t melt down like that and the LED’s probably wouldn’t all go out at once. I found some videos online showing how to take the rear cover off of the TV to reveal the boards and hoped I could see something that had burned out. I had to remove over 20 screws to get the cover off but didn’t see any damage.
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