Does anyone recognize this video IC labeled 874-2? I want to see if I can find out the pinout of the IC without needing to buy an oscilloscope. I want to add composite video input to this set and if I can find the pins that carry the composite signal, presumably I can just piggyback off them with wires and run said wires to RCA jacks on the back.
https://i.imgur.com/KTiGSU2.jpg