Seems to be several on ebay but they have different letters in the back like BUSWLJR etc, not sure if any of those will interchange but some of them are cheaper, see if this one is a match, notice how it says fits this and others: https://www.tvserviceparts.com/LG-EBT64220203.html
Ok, this is interesting, those boards might interchange, found this on shopjimmy, if that's the case I've seen some for less than 200 bux even 65 bux on ebay, how to confirm if they will interchange is the problem, I guess you could ask the seller IF they are knowledgeable, maybe email shopjimmy and ask, if they don't know who does?: https://www.shopjimmy.com/lg-55uk650...-parts-kit.htm
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