Originally Posted by cablebandit3
Make sure your cabletv feed is grounded somewhere. Mine is NOW grounded at the splitter as it comes into the crawlspace but I am convinced that this is where the voltage spike is coming from that has killed an onkyo 3007 3x...3010 1x and a denon x4000 1x and an old dlp tv hdmi port 1x.
AMEN!! A $10 Holland Coax ground will do awesome things for buzzing in your system. At least in mine it did. And power issues, but I guess I didn't get mine hooked up soon enough.
I haven't seen much about Onkyo's lower end products on the thread, so I'd thought I'd post my experience so far.
I bought a AVX-290 HTIB online (refurb) and it was awesome until tonight. Having the HDMIs go out in the middle of the game is... well, less than ideal.
I have about three inches of space between the unit and the shelf above (obviously no other components stacked), but not much room to the left or right. Boy did it get hot before the ports failed. Actually it's weird, mine won't give me video out, but for some reason the audio is still coming in fine through all the HDMIs. It's only when I turn the TV (or my projector) on that the HDMI indicator flashes, then goes solid, and that's when I lose audio and no video.
This is the really interesting/annoying part. Called Onkyo, was surprised they had someone working on the weekend. It's still under the 1 year regular warranty that came with it, so the repair should be covered according to the support guy that didn't seem interested in my problem. He gave me the name of a place in Ausin (I'm in Waco, so short drive) to take the receiver.
I found their website, scrolled to the list of vendors they do work for, and found this beside the Onkyo logo:
"We know their receivers inside and out. We no longer do warranty work for them, but out of warranty we can help. If you have an HDMI problem, you probably have a bad circuit board, which we will not be able to order. Please contact K-O Electronics in Plano if you have an HDMI problem."
So it looks to me like this place got annoyed (or wasn't cost effective) replacing HDMI boards and stopped their in-warranty support for Onkyo. This is a clear testament to the problem... that is still clearly occurring. Apparently this place (Pyramid Audio) is a big center that does warranty stuff for every vendor you can think of. One of eight "Denon Super Service Centers" in the USA.
This is 2014, and even though my unit is refurb, it's still recent. I have no idea on when it was actually for sale new, but certainly not more than a few years. So I guess I'm taking it up to Dallas sometime this week. It blows.
Call me an idiot, but why isn't there a fan(s) in these receivers?? I have loved reading through this whole thread and people talk about putting a fan here or there, cutting a hole in my cabinet here, etc etc. I guess the day of use and throw away products is here to stay. I sternly believe there is no reason any consumer should have to leave a FOOT on all side of the receiver for ventilation, in the case of the Denon products. That is the most absurd thing I've ever heard. That pretty much restricts you to a rack in a closet somewhere, not in a normal TV stand like 98% of America has.