Mr Klein
I spotted your conversations about the Soundcraft Spirit studio. I am a design engineer who happens to be repairing a CPS150 power supply. You mentioned replacing R32 with a 2K7 resistor. That is fine...but note that it is dropping 3/4 watt of power...so you need to either fit , say, a 3 watt type or alternatively wait for it to burn out again (cos it will!!!) . This is in fact a minor design fault. They use a TL783 high voltage IC regulator which needs to drop 16 mA at its output in order to be stable....so soundcraft fitted 82 ohms as top resistor and 2K7 (with a trimpot in series) for the bottom resistor. This bottom resistor has approx 45 volts across it so draws the required 16mA but 45 X 16 =720 mW.
Also in this thread someone said the bridges will die....so true but if you upgrade them...fit them to the case metalwork using extension wires cos they too will just die again eventually otherwise (they exceed the package dissipation figures) best ones are International Rectifier "glass passivated" bridges. Shame the power supply lets down a fine mixer. I am in UK at
www.coastelect.com if anyone wants to contact me re. CPS150 issues.