Ours is on a fixed mounting bracket with a lever on each side. I know this because I bought an inspection camera with a long flexible tube to examine it.
If you can't find a chain in the center you may want to try to feel the side levers. The bracket is very small so the levers are hard to reach if you have a 32 inch TV. Once I get mine off, I plan to replace it with a Jensen 32 inch 12 volt TV and an articulating mounting bracket.
"We're all here because...we're not all here"
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