Quote Originally Posted by HighFidelityGuy View Post
From what I remember the main reservoir cap in the Caiman and standard 7520 are 16V. There is however a diode just after the power input that causes a voltage drop of about 0.5V. There's also a resistor which drops the voltage a bit more but I'm I can't remember if that's before or after the reservoir cap.
The big resistor situated behind the 7805 regulator can be replaced with a wire link if you have the Murata regulator fitted.