Does the system work using the onboard controls? (most important detail)
Initially the only button it will react to on the remote, is when you press CD to turn it on.
Have you tried looking through a phone camera to see if the remote is sending out IR. Press CD on the remote and you should see the two IR emmitters on the remote glow/flash (I’m told that if using an iPhone look through the selfie cam).
What speakers do you have connected? I assume they are not B&O Beolab Speakers. You only need the Dummy Plug if NOT using Beolab Speakers. There are two powerlink sockets (as marked). The third socket you see is an AUX input.
If you have non B&O speakers connected, how is that being achieved with your speakers? The BS9000 cannot power non B&O speakers so do you have a separate Amp connected?
Option Programming may be what the issue is. You need the system in standby when you set the options. I believe that it should be set as A-OPT 1 if you are using the dummy plug.
You are correct that people have had issues with the IR eye failing. Ther are a few posts on the Archive Forum 2012-2022 if you do a search there.
Hopefully your answers will assist us to help you. Good luck
Scroll down in the article for a link to the pics. They work really well with my system but are bought inside when done with and as they have the built in IR eye they are an easy “all in one” solution.
You could look at a couple of Beolink Passives (one fitted inside near each balcony) feeding out to specialised outdoor speakers with an IR eye in the weatherproof mount. They will be controllable via the eye and work the same as a BL2000.