LB2120 not booting / unknown LED pattern

Hi I have an issue with an LB2120 LTE modem (LB2120-100AUS - H/W 1.0(0701)). Once switched on, the power LED comes on for a moment or two, and then the modem displays the following LED sequen...

Hardware

Mobile Routers

Troubleshooting

JasonN

NETGEAR Employee Retired

Apr 18, 2018

Hi Stephen12345 & Bowlo,

Will your LB2120 boot up or is it just the LED light that are in a weird pattern? Is your device up-to-date with the most current firmware? Have you done a factory reset?

Have you tried another power supply because the power LED is amber?

Please let me know. :]

- Jason N

Bowlo

Aspirant

Apr 20, 2018

LB2120-100AUS

H/W: 1.0(0701)

The device recently automatically updated but I didn't note the update or previously installed versions.

The amber power LED comes on at startup and stays on.

The green LEDs 1, 3 & 5 come on about 15 seconds after startup and stay on.

The network LED flashes briefly about 20secs after startup but then extinguishes.

The network LED flashes with activity when a computer is connected to the WAN but the computer doesn't see the LB2120 and doesn't connect.

There's no way to do an online factory reset as the computer won't connect in either port.

Pressing the factory reset button has no effect. I've tried momentary holding, holding for various periods and holding while starting up all having no effect.

I've tried another power supply with no difference in behaviour.

I've also removed and re-inserted the SIM card with no change.

The device was quite impressive in operation before it failed.

Thanks Jason.

I hope this is helpful for you.

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LB2120 not booting / unknown LED pattern