I have a DSi that is in very good condition but for the right shoulder button. It does work but I have to press very hard to get it to register. The “lift up the button and blow into it” does actually improve the function of the button for a bit (I use canned air, not moist mouth) but it doesn’t take long at all to NOT work either. Does anyone have a REAL solution that actually works short of disassembly and replacement of the button?
The switch underneath is most likely bad. I know that replacing it isn’t an option for you, but it may be the answer.
Have you tried disassembling the unit to see if there is any debris?
So there wasn’t any visible debris upon disassembly but directly attacking the button with contact cleaner was effective.
Hey, that’s great to hear! Generally, when those buttons fail to activate, they need replaced. I’ll try to keep this in my back pocket, though.