corgan4321
Well-known member
Hello,
I have an Urei 1176 Rev F on the bench that had a burned power supply. I replaced the failed 30V zener with a part I got on eBay but am only getting 26.5V out of the Zener when fitted into the unit. I tested the zener out of circuit with a 1k resistor in series and a 40V DC supply and I”m only getting the Zener to clamp down 24V. Is this a bad part? In circuit, R84 (the 3W resistor) is dropping 11V - about 125mW through there.
Thank you!
I have an Urei 1176 Rev F on the bench that had a burned power supply. I replaced the failed 30V zener with a part I got on eBay but am only getting 26.5V out of the Zener when fitted into the unit. I tested the zener out of circuit with a 1k resistor in series and a 40V DC supply and I”m only getting the Zener to clamp down 24V. Is this a bad part? In circuit, R84 (the 3W resistor) is dropping 11V - about 125mW through there.
Thank you!