i'm on my second 635 in 1.5 months & now the new one doesn't work. it mysteriously shuts off. if i turn it on from stand-by mode, it shuts off in 2-3 seconds. if i reset the processor, it will work for about 30 minutes then shut & stop working again.
i returned the first 635 after i attempted the upgrade which failed...causing the 635 to not even turn on...
the few days i had the new one working, it sounded great!!! even though it would never remember the surround settings (version 4.05).
i really don't see how i'm going to get a better receiver for the money i paid for this one...but i also need something the wife can easily use, & the way it's going, doesn't look like hk has anything to offer...