Just to clarify, your looking to change the source in order to watch \ connect to a device such as a DVD player?
Can you please help me out with the make and model of your TV?
Sorry for the delay, I was with another customer.
I believe the pop up you saw requesting further payment was for remote assistance, unfortunately I cant provide that for the model of TV you have.
If you want to proceed without a phone call you can decline\ignore the offer for a phone call, and I can continue to provide you support via instant message. Please give me a few moments to lookup the details for your model of TV.