I'm not sure there. The larger Durst supplies that are regulated use a pulse-width-modulation circuit to control the voltage, rather than a big transformer. So, if the 'regulator' is blown, the whole thing is shot and shouldn't power up. But on the smaller power supplies, I don't know.
Originally Posted by Halford
Based on the specs, that transformer you posted should work as a substitute.
It is also possible to get 12V by a large diode and a power resistor, some enlargers used that, but maybe not for 100W.
Whatever you do, don't trash the EST305. It may be repairable, or useful for parts to make on working unit out of two blown units.
You can take the cord off of the EST305 and hook that to the new transformer. You will want to keep the original connector on the M305 head, in case a Durst power supply shows up sometime.
Can you post a picture of the innards?
Last edited by ic-racer; 07-08-2010 at 10:14 PM. Click to view previous post history.