Geary, first of all - congratulations - it looks sounds you have a real peach of an enlarger
I have a bench mounted Mk4 504
My transtab powers both the 24V bulb and the head cooling fan
The air coming out of the head when the bulb is on is suprisingly warm - you will need to do something with yours if you are running a twin buld head
As I had a working transtab I gave up on the other control box the unit and bought the excellent RH Designs Stop Clock Pro timer + DeVere lead.
The Stop Clock works relay well with the DeVere - but needs the transtab
Good luck
Martin |