Fixing sticky buttons on IQ brain

Does anyone have advice on how to fix sticking buttons on the brain? The arrow buttons are sticking down when pressed. If I remove the screws on the bottom of the unit, can I get in there to clean it out?

I’ve had this happen. I’ve used canned air with the tiny straw on it to blow schmutz out of the keys on both the brain and the joystick.

I also have used contact cleaner (NOT WD40), it’s a spray that does not leave a residue. My can is from Radio Shack, that shows how long I’ve had it. Reach out through your parent network for an uncle / grandparent that’s an Amateur radio operator, they will have some.

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Pro-tip on how to use your tribe!

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Thanks. Air didn’t do it. I’m gonna try contact cleaner.

you could try to pressurize the buttons and force them out