I can’t tell from the photo. A leaking heat sink will cause a greasy type of residue stain. See if your stain is adjacent to the crimped ends of the heat sink. If so, replace it.
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I can’t tell from the teardown if this machine even has one.
I can’t tell from the photo. A leaking heat sink will cause a greasy type of residue stain. See if your stain is adjacent to the crimped ends of the heat sink. If so, replace it.