Facing TV Problems? Ask a TV Technician.
What all inputs have you tried?
Ok, so the on-screen menu works but you are not seeing a picture signal..
this does indicate a fault with the digital DG board.
The only sure way to test the board is to swap in another known good board.
The board can be pulled and tested in another working set.
I have checked with several reputable suppliers and all are out of stock.
The only place I can find these boards at the moment is on eBay.
There will be different revisions of the board, and they should all work, however if you check the exact part number on your existing board, then you can try and get an exact match if you prefer.