Narus Posted July 13, 2019 Share Posted July 13, 2019 Came home from being out of town two months for work. Plugged my Tetra into the power supply laying on the shelf and there was a cracking sound. After looking more carefully I noticed that I had actually plugged it into my 48V POE switch power supply. Found a 12V supply and plugged it in and smoke came out. After taking it apart noticed that the smoke was coming from the FR9888 DC-DC converter. Seems like it is not possible to get one in the USA so I am waiting an one to come to China. I have my fingers crossed and hopefully the FR9888 is the only thing I smoked. Anyway I am putting red tape on all my POE switch power supplies. Quote Link to comment Share on other sites More sharing options...
Forkish Posted July 13, 2019 Share Posted July 13, 2019 Ouch, I chuckled a bit because I’ve done something similar, twice actually. Once to a tetra actually (it wasn’t as bad yours, no smoke but I could only power it via usb. Eventually sold it on ebay) and also a hdmi recorder. I now write in white china marker to which device the plug goes to. Fingers crossed for you. Quote Link to comment Share on other sites More sharing options...
Narus Posted July 13, 2019 Author Share Posted July 13, 2019 Last month I smoked a Dlink DSR 500 router. The Tetra has a resettle fuse, if it had a real one maybe it would have survived and I would only have to change the fuse. I am actually pretty sure I will be ok. Anyway I put red tape on all my POE 48vdc supplies. Thanks for your sympathy. Quote Link to comment Share on other sites More sharing options...
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