Router hell - TG589vn works fine - TG582n doesn't work at all

[#1]

I currently have a TG589vn with a ADSL cable plugged into it which works fine.

I don't connect to the router directly wirelessly but I have wireless access points connected to it by ethernet cable.

I want to swap the TG589vn to a TG582n because the TG582n is smaller and can be mounted flat to a wall.

However when I do the swap then the TG582n will not work at all.

The broadband light flashes green and the browser window will not display the router home page, but just says that my ADSL connection is down.

I have factory reset the router and turned off the wireless access points before attempting this but still no luck.

What do I need to do to the TG582n to make it work please?

[#2]

Should be asked in MY ROUTER thread.

[#3]

Moderators Note.
Moved to My Router from Broadband

[#4]

Welcome to the forum.

You're not on a fibre connection by any chance? The 582 is an obsolete ADSL only modem/router so won't work on VDSL fibre.

These are the setting instructions.  https://www.plus.net/home-broadband/router-reconnect/

[#5]

Sorry to  hear you're having issues.

There are two types of TG582N(At least what we've sent out to people in the past) where they are either ADSL or FTTC.

If the router is an FTTC one it won't work with an ADSL circuit, and it will only work on a fibre line if you've got a fibre modem too.
Easiest way to find out which one you've got is by looking at the label, you should see FTTC written on it if it's a fibre router.

[#6]

I don't think @Gandalf was around at the time but the later versions of the FTTC firmware had the ability to switch to ADSL mode https://community.plus.net/t5/Broadband/New-TG582n-FTTC-firmware-10-2-5-2-For-testing/m-p/980490 . IIRC you used the setup wizard to select FTTC or ADSL modem...