Chosen Solution
Fan worked fine last year. Just tried it this year and it shows no sign of operation. Changed fuse and have stripped down fan but every part seems to be a sealed unit. Any ideas?
I’d suggest disassembling it further — you’ve probably got a power supply problem. Maybe a bug crawled into it. Use some more… aggressive… disassembly techniques. It’s not working now, so you’ve got nothing to lose! Posting some photos of the internals might help out the next person.
