Press the stand by button first. Press SHIFT, MENU. You will get Terminal Set Up? shown on the screen. Press PLAY. You will then get VIDEO TWO WAY shown on the screen. Use the up and down keys to toggle to what you want and then press PLAY to accept. It will then do Audio and press PLAY again to accept. Finally press PLAY one more time to store the changes.
On the repair front, there seem to be a couple of danish members able to undertake repairs. Search in the Workbench area.