Samba de amigo Maraca repair

[Washp]

Hi, I got a set of maracas about a year ago, and they were working great. but recently i've noticed one of them has stopped detecting when i shake. I've flipped the controllers around to the opposite ports and the same maraca wouldn't hit the notes. has anyone dealt with fixing maraca controllers? are they repairable?

[fafadou]

Probably fixable but you have to open it.
I guess for a false electrical contact somewhere.

A clean may be enough.

[Gocha]

Hi everyone, I'm reviving this post just to check if someone knows how to properly open the maracas. I'm not sure, but I suspect I have a similar problem with one.
As I'm not sure yet I think I need to test it a little more, but it would be nice if anyone has experience in repairing the maracas, if not and I confirm that i'm having this problem I could try to make a tutorial myself, but I'm a little afraid of breaking the maracas even more.

[Wombat]

With one of my sets it was the cable going from the maracas to the sensor that had a bad connection. I fixed this by replacing that small piece of cable with a CAT/UTP cable. It's not an visually pleasant solution, but its gets the job done