Hi,

D9...1N4007
D12...MUR120

I am sorry to tell you there is no repair shop, you need to find some willing specialist to fix this in your location, but you must know that the fix for this speakers needs tons of time and tons effort and some money (sometimes a lot of money compared to actual value of the speakers.) No commercial repair shop will take this job because it will cost you more than its original price. Or try it yourself following this topic.

There is a lot of bulged caps, replace all capxon junk and the other lytics as well.

Fot he part 100M 05399, i have no idea what it is.

You can track the red and black paired wires from the amp boards connected to the JST-VH connectors on the I/O board, there are marking on the pcb which channel it is.