Maybe you should have used the spray setting on your hose instead of the flood setting!
I feel your pain, dude.
It is a major hassle to get an AVR or AVP repaired as it is the center piece of most of our systems. Due to the heavy weight and the multitude of connections, it is not only a physical problem to deal with, it is a big time inconvenience to pull it out of the system, box it, lug it, wait a few weeks for repairs, unbox it and then put it all back together. Lugging 40-70 pounds around ain't fun. Then you have lost the use of the gear for a time too. It almost becomes like our cars - Not only in terms of ticket price but major inconvenience. At least with my car, I don't have to swap cables.
I just designed a special listening room in my house with 'gear swapping' in mind. I have a rack on rollers that fits into a special-made closet. I can roll the whole rack out of the closet into the room in about 5 mins. Still an aggravation should something konk out but much better than having to contort my body around the backs of a cabinet to wire it up.
I asked for an extended warranty for my new AVP but couldn't get one from the dealer or Denon. Would like to see at least 5 years on the Denon AVP.
Before I started using Denon gear, I went through about 4 Harman Kardon receivers in a row that were bad before finally giving up on that brand entirely. They were all made in China. At least my AVP is made in Japan.