Think I've killed it.Ogo pwm 30 amp.
During plate conditioning today I left it running while taking youngest son to his mates.

On my return (less than 15 minutes)
The fan wasn't running and the pwm was buzzing like a good un.

Current was still going to the cell @ the 11 amps I set it to.

picked the unit up to see if it was warm and something "rattled"

Don't want to open it up as it's a month or so old (waranty job)

Same unit is $24 in the USA.

£30 here in the UK (f$%^&** rip off Britain)

It's a case of you get what you pay for.

Mine was made either Monday morning or late Friday afternoon.

Getting on to the vendor in a minute and if no joy then Ogo themselves.