Console Repair

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Help troubleshooting issue with Mega Drive controller (lemmy.ml)

submitted 6 months ago by [email protected] to c/[email protected]

4 comments fedilink hide all child comments

I have a "Professional control pad PRO-2" (this one https://segaretro.org/Konix_Power_Pad), but unfortunately it does not work.

When I open it up and toy with the contacts I can get all the buttons to work at the same time, and indefinitely, by bridging the start button contact with a single piece of metal. The 3 lights will go on and stay on, and the game will keep receiving start repeatedly. I have tested this with Virtua Racing, it will start the game, go through all menus and then when the race starts it will pause and continue repeatedly. When I touch both sides of the start button contact with a multimeter it does nothing.

I don't know much about electronics, but I would like to repair this controller.

Here are pictures of the inside of the controllers.

https://imgur.com/a/WTQsCIt

I'm not seeing anything wrong, and the capacitors don't look leaky, but I could replace them. How can I best proceed?

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[–] [email protected] 1 points 6 months ago (1 children)

I have already cleaned the contacts and the membranes. How would I go about tracing where the problem lies? I know there's no continuity when the button isn't pressed, but nothing happens when I bridge any of the buttons, either with the membrane or otherwise, with the exception of the start button, which then seems to trigger all the buttons continuously (judging by the leds).

[–] [email protected] 1 points 6 months ago (1 children)

It's really odd you wouldn't get continuity even using metal across the buttons. That seems like a physical issue with those contacts.

[–] [email protected] 1 points 6 months ago

Do you know how I can proceed tracing where the issue lies? Power is applied, as I can get the leds to light up.