Recent content by R6266c

  1. R

    St 400 transformer hum is excessive. Fix or problem?

    Picked up a couple st 400 units. Replaced all electrolytics including 2 large 10,000 mfd units. Replaced the 10,000 mfd with 18,000 mfd new caps I got from eBay. Both units have very good reproduction, excellent bass, but have excessive transformer hum. With no signal you can hear the...