Found a nice looking Denon receiver on Best Buy's website, with 4 HDMI inputs, 120 watts per channel. Don't need speakers, being my existing ones are still functional. Thinking of paying Best Buy a visit in the next couple of hours or so, and maybe this time investing in an extended warranty.
As is my usual policy, when something doesn't last as long as I think it should, I never buy anything made by that company again. Yamaha is now on my "shit list", along with RCA and Panasonic.