I have really vivid memories of this short, it was made either in the late 80’s or early 90’s and it was shown on the Disney Channel during the time where they would air non company properties like the Rankin Bass animes or British shows like Spot and Paddington. So I’m pretty sure it wasn’t produced by Disney.
It’s about some insect like cyborg creatures that inhabited a TV, the main character was a female spider and the plot revolved around fixing the broken TV after a video game damaged it, so the human family wouldn’t throw it out with the trash. The insects managed to fix it and the TV turns on in the middle of the night in a dump, the screen has a skull that introduces the game and it wakes up the family and they retrieve it.
It looked like very primitive CGI akin to The Mind’s Eye but also could have been some really well made stop motion.