Netonix Forums

Hello I have a ws-12-250-ac connected for the past few months working great.
We have a mimosa B5 connected to port 2 and powered with the 48VH output.
The B5 started to have issues with the connection so I remotely power cycled it at the netonix. The link never came back up. I noticed then that the link was showing 150Watts of power used by the B5. I came in and changed the B5 to a brick and moved the connection to another port and all came back up again.
Now when I turn on the POE on that same port (it has nothing connected in it) it shows a large amount of wattage being used. I am sure it is a bad current sensor or something like that. My question is do you think this is something I can repair on my own (I am good with soldering equipment) if I order the get the correct parts from you or is there something deeper that may be wrong with it.
I think it is under warranty still but shipping through the border from Canada and back is going to be an expensive pain.

This means your current sensors are damaged.

Most common cause for current sensor damage is BAD grounding where you do not have the Electrical Service Ground Rods bonded to the Tower Ground Rods and or your Electrical service ground rods are degraded or inadequate so the excess current trying to get to Earth Ground see the tower ground rods as the better path to ground which it gets to the Tower Ground Rods through your Ethernet cable to the B5C to the antenna to the tower because the Tower Ground Rods are not bonded together.

You will need to RMA your switch for repair and fix your grounding or it will continue to happen. This time it damaged the switch next time it may damage the radio Ethernet port and your climbing a tower to replace your radio.

99% of all WISP equipment damage is from ground current (I own a WISP)

Here are some good posts on grounding:
http://forum.netonix.com/viewtopic.php? ... 279#p19279
http://forum.netonix.com/viewtopic.php?f=30&t=1816
http://forum.netonix.com/viewtopic.php?f=30&t=188
http://forum.netonix.com/viewtopic.php? ... =30#p13447
http://forum.netonix.com/viewtopic.php?f=30&t=1429

Read the posts above but the basics are as follow:
Tower ground rods must be bonded to electrical service ground rods HEAVY #2 wire.
I always add 1 or 2 “new” ground rods to older existing electrical services.

Next time when you fry your B5C Ethernet port we also fix them to, read this post:
viewtopic.php?f=37&t=3446#p22621

Thanks very much for the info, I will take a closer look at the tower grounding for sure. Good to know about the repairs I will do up an RMA for it soon