It's amazing how this happens in realtime
but never noticed till it quits with triggers
dropping out etc.
Took me about 3 days & several tear downs
under bright light to see slightest evidence
of micro spill, possible sip of coffee combo
sneeze. And you have enough force to get passed
Sure enough, a stain mark about size of pencil
eraser bridged across a processor from the board surface.
Only tool used,
Trimmed tooth brush,, with scissor,
making it uniform, dipped in five drops of rubbing alcohol
Now forced wiped at full flex of bristles
across paper towel to clean the brush, and
leave brush wetted just right,,
with battery removed, going at the board in scrubbing action,
quickly drying it with paper towel,, vs micro cloth - that tends
to grab at everything..
Give both sides of board a scrub,
tapped dry, give it a shot of warm air.
Hair dryer what ever,
Set it aside w/o battery for an hour.
Put battery on w/o bottom cover,,
does it work now ?
Note: make sure bump strip to circuit board
contacts are bright - this strip controls all Buttons/Triggers
Best of Luck.
I meant to add a custom shield to lay over circuit board,
by simply cutting sample from ziplock bag,, pull up joysticks
and give it one more edge of protection.
But I was so thrilled to actually get back to killing Assassins
I totally forgot.