Ucd400hg blew after 4 years

alvinlim · 10th August 2011, 11:12 AM

My ucd400hg blew a few days ago. 56v dc into my harbeth - burnt coil. Intermittent blinking now on the onboard led. Any ideas what's wrong?

I measured the power supply; no issues there.

Javin5 · 10th August 2011, 01:44 PM

Hard to say after the fact. Maybe some temporary, unusually high mains voltage?

Burnt coil? Does anyone know if the UcD has some built-in protection that should have prevented this?

10th August 2011, 11:12 AM	#1
alvinlim diyAudio Member Join Date: Jun 2003 Location: Singapore	Ucd400hg blew after 4 years My ucd400hg blew a few days ago. 56v dc into my harbeth - burnt coil. Intermittent blinking now on the onboard led. Any ideas what's wrong? I measured the power supply; no issues there.

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10th August 2011, 01:44 PM	#2
Javin5 diyAudio Member Join Date: Mar 2006 Location: Switzerland	Hard to say after the fact. Maybe some temporary, unusually high mains voltage? Burnt coil? Does anyone know if the UcD has some built-in protection that should have prevented this?