Wow, this is great. Saved that from the recycle yard. Excellent work. I have a very similar Yamaha model. Mine have very very low milage on it even though it is older but will remember this if any problems. Amazes me how you know the the various relays that are known problems. It’s not like your channel is only about fixing receivers. Not even a majority of your vid’s are that, so great job! Cheers.