I think it's that voltage regulator/mosfet right in the middle. https://digipres.club/system/media_attachments/files/113/303/878/774/586/084/original/affdc73e920a771b.jpeg
You. What are you? UTC 10N65KL... Unisonic Technologies 10A, 650V N-Channel Power MOSFET. There we go. https://digipres.club/system/media_attachments/files/113/303/899/420/978/899/original/8f7b62d3959e5947.jpeg