I have a pioneer PDP R03U that I got from a friend it was always hooked up to a surround system and amp the provided sound, I want to hook up the pioneer speakers that came with the TV, I can not get any sound, is there something on the remote that I am missing? And yes I checked the mute, had my wife ask me too.
That model number is for a Media Receiver that probably is hooked up to a PDP-5030HD panel.
Verify the panel model number.
Without looking at the model's pdf, I'd speculate that you have to be sure that the wires in the back are properly connected to the terminals based on my PDP-6070 which is long gone. It's also possible that in the menu, there is a setup option to turn on the TV's speakers rather than using an external surround sound system.
If that doesn't help, be sure to get us the model number and we'll see if we can figure it out.