Hardware GBA Start and Select issue

[Beaps]

Hi all

I gotta GBA with nothing happening when I press Start but when I press Select it presses Start & Select at the same time.

The insides are pretty clean and it's not an issue with the membrane.

Any ideas

 

[FAST6191]

What model of GBA? It matters little at this point but best to have such info.

If the membrane is good then such things would usually speak to a short (say someone spilling a nice drink inside it and causing something sticky to jump the gap) or a break in a trace somewhere that goes elsewhere. Can also be around the test pads.