system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How could old tvs (and Home appliances in general) be fixed with just a hit? Why this doesn't work anymore?
gpt
Home appliances used to have a lot of "discrete", i.e. separate and relatively large, components.  Lots of problems were due to loose connections and other similar mechanical issues. By hitting the TV/home appliance, you could (with some luck) reconnect the components and fix it.

Nowadays, home appliances are smaller (think OLEDs vs cathod ray tubes). Because the components are so small (and often "integrated" in few chips), it's unlikely that you can fix a TV by hitting it.