gcasey0513 Posted September 5, 2009 Share Posted September 5, 2009 Hi All -I was trying to plug in the PoE injector for a touchscreen and got the wrong ethernet cable. Instead of the one going to the touchscreen, i got one going to the video switch(Sony CAV-CVS12ES). At first none of my video signals worked. Then I unplugged the two cables I had connected to the POE and the rest of the zones worked once I plugged them back in one at a time. I tried swapping out Baluns but that didn't make a difference. Also - when I plugged a working video zone cable into one of the "bad" switch ports, all TVs went down again.Any suggestions?Thanks,George Link to comment Share on other sites More sharing options...
RyanE Posted September 5, 2009 Share Posted September 5, 2009 I think the only suggestion is to not use the ports you fried, and to not plug any more PoE injectors into the video switcher.Apparently, Bad things happen when you send 48V into the 'video' port of a balun.Sorry.RyanE Link to comment Share on other sites More sharing options...
bebster Posted September 5, 2009 Share Posted September 5, 2009 Hard lesson to learn. But I think I'll get some red patch cables and use those for POE. And for those blue cat5e wires that I crimp going to a TS, maybe get some red strain-relief hoods to signal POE. Link to comment Share on other sites More sharing options...
henniae Posted September 5, 2009 Share Posted September 5, 2009 There is a negotiation process that POE uses to determine if power should be applied. The POE switch just doesn't assume that the end device needs power and turn it on. If the negotiation process fails no power is applied. Link to comment Share on other sites More sharing options...
RyanE Posted September 5, 2009 Share Posted September 5, 2009 Yes, but he was plugging in a PoE injector, which may or may not follow the PoE specs for applying power.The inexpensive ones don't have much in the way of brains for negotiation.RyanE Link to comment Share on other sites More sharing options...
AS2 Posted September 6, 2009 Share Posted September 6, 2009 Restart the Sony switch and try it again. Link to comment Share on other sites More sharing options...
jbs Posted September 8, 2009 Share Posted September 8, 2009 And if the setup doesn't allow for easily substituting in red patch cables then labels at the other end might do the trick. I'm a big fan of the Brother P-Touch. As my 5-year old recently said out of the blue, "Mommy, pretty soon Daddy will have labeled everything in the whole house." :-) Link to comment Share on other sites More sharing options...
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