Why did someone add these jacks to this old TV? (Magnavox 13MT143S) #repair

Time for a little exploration and repair of this Magnavox color TV which happens to have a couple strange mystery jacks added to the side.

Failed part: BUT11APX

Parts board: ST BUL312FR

-- Video Links

Extras Channel:
https://www.youtube.com/@adriansdigitalbasementextras/featured

My profile on Bluesky:
https://bsky.app/profile/adriansdigitalbasement.com

Adrian's Digital Basement Merch store:
https://my-store-c82bd2-2.creator-spring.com/

Support the channel on Patreon:
https://www.patreon.com/adriansdigitalbasement

Adrian's Digital Basement (Main Channel)
https://www.youtube.com/channel/UCE5dIscvDxrb7CD5uiJJOiw

My GitHub repository:
https://github.com/misterblack1?tab=repositories

--- Instructional videos

My video on damage-free chip removal:
https://www.youtube.com/watch?v=XQVjwPsVFd8

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino

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