Bought fan second hand and found weird plastic object sticking out, It makes noise in oscilation mode because when head moves at some point It goes inside/outside. Is It a foreign object or something misaligned?
Imgur photo in comment
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[Photo](https://imgur.com/a/ur2UHUV)
[After disassembly It seems to be a part which has fallen out and makes led’s dimmer](https://imgur.com/a/uK9eebR)