The Goldmund needs two power supplies: one for the motor and one for the T3 arm. The T3 needs an 24 Volts DC supply, which according to Goldmund itself doesn't even has to be regulated. See also here:
http://www.goldmund.com/support/faq/ and scroll down a little.
As for the motor power supply: sorry, can't help you there. By the way: congrats on a great TT/arm combination.
Just one more thing: be carefull with the motor. According to your serial number, it is probably fitted with the Pabst motor. This motor is no longer supported by Goldmund or Pabst, so if it breaks down, the Goldmund cannot be easily fixed. Later models of the Studio/Studietto were fitted with a JVC motor, which is still in stock at Goldmund, as are the strings for the T3 (F) and T5 arm.
http://www.goldmund.com/support/faq/ and scroll down a little.
As for the motor power supply: sorry, can't help you there. By the way: congrats on a great TT/arm combination.
Just one more thing: be carefull with the motor. According to your serial number, it is probably fitted with the Pabst motor. This motor is no longer supported by Goldmund or Pabst, so if it breaks down, the Goldmund cannot be easily fixed. Later models of the Studio/Studietto were fitted with a JVC motor, which is still in stock at Goldmund, as are the strings for the T3 (F) and T5 arm.