I have a saunders enlarger which is contentiously on as soon as i plug it in.
The power supply is runnig OK, and inside all looks ok.
The timer circuit in the power supply seems to have no effect on the power to the bulb or fan.
I am guessing the fan should be running as long as the power supply is switched on however in this case the bulb is also on at all times.
Any ideas?
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