Failing contact on buttons

[dle]

My Bsp button contacts are failing mainly when I press the Seq > (Next) it jumps all over (happens on all three seqs)..   any one fix this themselves is it just a cleaning job?..

[MajorFubar]

If it's out of warranty and you feel confident enough, have a go cleaning the circuitboard with IPA. It all depends on your personal skill / confidence level.