You will find a compatible part on Ebay, I just bought some similar caps there.
prcguy
prcguy
That was my thought, too.
Try finding someone that still fixes these things, and ask them if they would sell you the part. There should be an identifier on that board, for that part. It should be Cxxx, where the xxx is a number. (That can be looked up in the parts listing of the service manual, and should give the values for that part.)
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