So after much time spent cleaning and everything else am left with a UGC-74A teleprinter that has a bad power supply, don’t know if it had anything to do with all the goo running onto the card or not, tend to think not but the power supply board definitely has issues. Found an open filter capacitor (C3) but also have an issue with the strange four legged power transistor that drives the MPU switcher transformer or its unknown part number 16 pin integrated circuit driver.

Long story short is I need a UGC-74A power supply card, that’s the big one under the chassis. The manual refers to it as a 3A1PS1 with the following numbers on it B60063 / SM-E-915606

Ray F/KA3EKH