EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: sequoia on October 28, 2015, 07:42:23 pm
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CyberPower PR1500LCD UPS has recently developed annoying "crackling" noise. (Attached MP3 has sample of the sound)
This doesn't sound to me as typical inductor/coil whine (?) Any ideas what this could be?
Unit is powering punch of equipment currently and passes self-test fine, so I haven't been able to take a look inside, yet.
Need to also check if this thing is still under warranty...although shipping might not be worth it as it weights over 50lb and I doubt warranty in US covers shipping (in EU/Australia it might be different story....)