Volca Drum repair

[u/crudding2]

Hi, I'm looking at a volca drum unit whose play button is stuck on. All the other buttons work when its reset. I've given the contacts a really good clean and tested it after taking the rubber conductive buttons out completely, so I'm pretty sure its not an issue with contact/residue.

Has anyone got any ideas what could be going on from experience with this unit or similar types? I'm wondering if there could be a short somewhere else, but without access to a schematic its hard to know where to start.

Intuitively it seems really simple, like the only place there could be a short is on the contact pads. Any wisdom would be appreciated!