Ucd400hg blew after 4 years - diyAudio
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Old 10th August 2011, 11:12 AM   #1
diyAudio Member
Join Date: Jun 2003
Location: Singapore
Default 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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Old 10th August 2011, 01:44 PM   #2
Javin5 is offline Javin5  Switzerland
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?
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