- Joined Mar 11, 2019
I bought this ∧ 30V 10A dc supply not too long ago (4 months maybe) as a secondary unit. Hardly used at all and already dead. I have an older similar unit that's always worked great so I am not sure if this one was just a lemon or from a bad batch. At first it seemed to work good, I used it for brief 3/5v loads once in awhile. Til last week I decided to use it more often (mostly 14V 2a loads, nothing fancy or over demanding) Pretty much soon as I started using it full time I started seeing it have issues with dropping power. It would slowly drift from 14V down to 0, Then come back full. This would happen about every 10 minutes. After a few days of monitoring this behavior it finally decided to die completely by blowing the main fuse. Wife told me I should buy a better one so I quickly agree'd, set the dead unit on the junk shelf and found a great deal on this guy:
After the replacement supply arrived and got settled in, figured I finally take a look at the busted one. The 2 mosfets are shot for sure, completely shorted. Other then that I'm not seeing anything out of the ordinary. Power supply's are not really my forte tho so I figured I'd see if anybody had any other suggestions on things to look out for while I'm waiting on the replacement mosfets.