You should store it somewhere warm for a while to make sure its dry right through! High voltage breakdown can be difficult to fix once its happened.The sarcasm is k-k-killin' me Max they do have a pretty nice department, this came out of a deep dark warehouse so I'm told...and has been left in the rain for a couple weeks B4 I stumbled on to it...
Should I fan-dry it in the sunshine tomorrow, and try to *fire* it up ??
Modern electronics are assembled with water soluble flux so they can be washed instead of using ozone depleting solvents, but they don't have the porous insulations and all the nooks & crannies of old equipment.