Dead controller port #1, best way to troubleshoot?

[MrRetroGamer]

I'm trying to help someone troubleshoot a dead port #1 on a 4 port console using a known good controller, with no response of any kind. No bent pins on the port from a visual inspection. What is the best way to help them figure out if it's only that port that is dead or if it's a bigger problem like a POKEY or GTIA chip? They do not have access to a diag cart or any other special equipment.

 

Thanks

[jsoper]

I'd replace the 4052 IC first, those go out a lot, and you can't start a game without it.

 

They're socketed on some motherboards, otherwise you need to:

clip the pins

unsolder and pull the pins out one by one

clean out the holes with solder wick

install a dip socket and shiny new 4052.

If that doesn't start the game, you need to check the bigger chips.

[classics]

Is there any analog response, or keypad response?