Hello, my name is XXXXX XXX I will be helping you today.
I need to ask a couple of questions to see if there are other reasons why one of the inputs is not working. Having 2 of the 3 inputs working is a good sign.
Can you tell me a bit about the sound bar - it would be great if I could get a model number from you so I can look at the proper documentation on my end.
Also, can you tell me which inputs work and which one doesn't?