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Carlisle, PA
reply to rapamatic

Re: Powering ONT without BBU?

If your BBU is indeed fried, then you will need to bypass it.

That would mean feeding the ONT the 12V line directly.

I'm definitely not endorsing this action, but if you still want to try it, you could run a jumper wire from a 12V battery terminals to the corresponding wires that run from the BBU to the ONT.

I'm not sure if you need to do anything else to the other lines going to the ONT (eg. the ones that tell the ONT if the BBU is receiving power or not); you would need a pin-out guide to see all of this.

I don't see how you are going to bypass the fried BBU without literally physically bypassing it's electronics or whatever may be toast.