I've heard that some jungle ics have their unused ports disabled in the eeprom in itself, so im wondering if there's anyways to confirm it, other than finding it out the hardway.
It's using a Toshiba TB1230AN chroma.

Circuit Digram of JVC 20NT11

gambar album foto
Here are the files and at page 48 of the service manual, is my tv's schematics.
https://drive.google.com/drive/folders/ ... 6-mdJBVyeu