We all know how sky colours determine the next day’s weather “Red sky at night, shepherd’s delight. Red sky in the morning, shepherd’s warning”. 
Well, we need something similar for JUMP modems, e.g. “Blue light on JUMP, tutor’s pump. Red light on JUMP, tutor’s hump.” In other words, if the Network Mode light next to the white ‘on/off’ light stays red when the modem is powered up (it should change to blue), this means the modem is faulty and I don’t think there is anything you can do about it (apart from reporting this to Skinny, and they will send you a courier bag to send it for repair or recycling). The photo below is what modems should look like within 20-30 seconds of being powered up.
Digital Inclusion Alliance Aotearoa 
Comment from Punawai in Kaitaia
I signed a gentleman up yesterday who bought the modem back within a couple of hours for exactly this reason, he said he had rang Skinny and gone through all the troubleshooting with them but still had no luck so was told to bring it back. I checked the sim card and found it was installed the wrong way! The customer said he hadn’t touched it so it may have come from the factory like that? Once I installed the sim card correctly it worked fine. Just thought I’d share that with you.
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Laurence, Sue Kini has a copy of my Spark Jump troubleshooting notes and if you read through them you’ll see that Punawai (above) is right – the red light staying on almost always indicates a problem with how the sim card is seated in the slot.
Open the hatch and jiggle it a bit and things usually turn blue almost immediately!
Paul – Masterton
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I have also fixed this issue by checking the SIM card is properly seated
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