I received my replacement audio board and successfully replaced my damaged one. I am happy to report that my AVR still works and I again have a working subwoofer output! here are some pictures.
The cover removed:
First you have to undo these connectors that connect the top board (Video) to the board below it (Audio) these are a pain to undo, there are three vertical interconnects to undo:
Here is the video board moved out of the way and you can see the audio board which needs to be replaced:
You have to remove a whole bunch of screws off the back:
With the audio board removed you can see further in to the component video board and below:
With the audio board out you have to remove the vertical connectors and then connect them to the new board:
Stopped taking pictures at this point but here it is all put back together:
Overall this was fairly complicated to take a part and put together. I have no problems building PC's but this is a different animal, everything is crammed so tightly together and delicate. Glad I was able to fix it myself though as i am sure it would have been quite a bit more to get it repaired!