Short FUR hazard actually!
Many years back, I offered to (attempt to) fix a couple of synths belonging to a friend of a friend. One of the synths was an ARP Odyssey (similar to the one in that pic) and he couldn't get it to trigger properly, along with lost reponse on several of the panel controls. Upon opening it up, I found the keybed and other parts bristling with fur. I phoned him and asked "Do you have any pets like a cat or a dog or a gorilla or something?"
"Err, yes I have a cat"
"I see. And where does it usually sleep?" :grin:
There had also clearly been some sort of liquid spilt inside (but I was afraid to ask about that). It took a fair bit of doing but it eventually worked. I offered to send it to a good home (ie, mine!) but he wouldn't part with it at the time. The curious thing was that many of those vintage synths are generally quite resilient to all kinds of .. err, "substance" abuse, but not this particular one it seemed.
Cheers
MPA