Sadly, I didn't take pictures and document. Pretty straightforward, open it up, disconnect cables, twist off the lenses on the diodes you are replacing, touch each solder point and remove diode, replace with new diode using same solder on the board (matching + to + and - to -), reconnect wires, and close it back up.Gig'em and I just did our backup units this past week and it took less than 30 mins to do.
Check with RCA for the Ocean Revive units if you haven't ordered yet. They just became a wholesaler and might be able to save you some money.