Getting a lot of interference from my mains....

[avelanchefan]

I have the Lsi7's as my mains. We made a move about three weeks ago. Hooked up the gear no problem. Everything sounded good.

Tonight I wanted to watch a late night movie so I throw on the head phones, I notice a "electricle" noise right away. Like static. So I start trying to trouble shoot it. I disconnect the headphones and turn it up loud, well the static is there too.

But the static is only on my main speakers. My rear's, center, and sub all sound fine....IE no static. So I disconnect the tuner from the surge protector and run it straight from the wall, then I disconnect the speaker wires and re-hook them up again. Still have the static.

Is there someting else I am missing here. It does this on the TV cd player everything. I am at a loss.:mad:

[avelanchefan]

Ok so now I am messing around with it a little more and I notice that if I turn off the effects (DPL, DTS, DD 5.1) the sound goes away.

Now I am really confused.


Oh yeah its a Yamaha RXV series.

[avelanchefan]

Ok so now I have unhooked everything twice no go. At my reference level on DVD playing I can barely barely hear it. (Which is about -40db)

But when cranked up to -20 to 0 it is very obvious. Again when head phones are on at -45 it is very obvious.

I did notice too that when in the 2 channel stereo mode it did disappear, but whne you increase or decrease the volume you get a "clicky/staicy" noise with it.

So is my reciever going bad? Will a line conditioner help solve this problem?

[Tour2ma]

Sorry to hear of the problem... Chill and see what the 'morrow brings. Hopefully is some random RF/ EMF that will go away.

If it doesn't, will deal with it then...

[avelanchefan]

The noise is still there. The only thing that I can think of that I have done different since moving is getting a new Mega CD player/changer.

The receiver is sitting on top of it, do you think that could cause some type of interference?

[Tour2ma]

Possible... one way to find out for sure. Unplug the changer while playing another source...

[polkatese]

one small suggestion that may or may not work, but worth a try. See if you can get a DC blocker coax adapter, and use it to connect between the tuner antenna to the receiver. You can find them at ratshack for $1. It supposed to block any dc current leakage to the receiver. If not, I suspect it is something to do with your DAC, since you mentioned it exists when you employ dolby processing.

[Vr3MxStyler2k3]

Av,

Is this 'static' in your tweeters? Just in your mains??

I noticed this ALSO with my old Yamaha receiver.....I noticed it went away when I got the PE/Adcom combo......

that same static followed over to the Advents, and on to the KLH's. I could never get it to go away....

[avelanchefan]

Yeah its in the tweets. And only the main speakers. I really cannot afford a receiver at this time so i am stuck with this one. One nice thing is that it is still under warranty, (Yammie has a 2 year warranty) So I called my local dealer, but they have not called me back.

[Tour2ma]

ave,
So unplugging the chamger produced no improvment?

[Vr3MxStyler2k3]

Yeah, actually I believe its the main AMPS - as you said. It does not happen in the back or center....

I had this problem, and it bugged the heck out of me. As I would have to turn the yammer up alot to hear movies and stuff, and the static just gets LOUDER and LOUDER and it just bugs the living crap out of you. But then again, if you notice, when you turn your head.....at different angles....that static will go away

[Tour2ma]

C'mon guys... let's not guess. This is the troubleshooting section, not the "Take a wild ass guess" section...

First rule of troubleshooting, answer the question, "What has changed?" Ave has already answered this... the disc changer was added. Until he reports the results of removing it from the equation there is no benefit to speculating, recommending solutions, etc...

The changer undoubtably has a fair sized drive motor for rotating the stash of discs. It was added in immediate proximity of the AVR; it needs to be eliminated before going further...

[avelanchefan]

Ok, I just moved the CD player to a different location. Still get the static.

When I turn the effects mode off the static disappears, but when you turn the volume knob you get static when turning it.

Still at a loss of what it could be.

[Vr3MxStyler2k3]

Let me shorten this up....

My Yamaha...has been plugged up in 6 different rooms, 4 different houses

and in each room, houses, that static continued

It was played on 3 different players......

A Yamaha player, an apex player, and a kenwood player

all the same thing....

I have found NOTHING that can solve it....

[Tour2ma]

Sid,

All I was saying is that first you examine the circumstances under which the problem appeared. That's basic troubleshooting. Even educated guesses, such as your past experience, are not useful until a common context is established. Sorry to play the "experience" card, but this is 28 years of experience in the Chemical industry talking.

Now that the Mega CDP (the known change) has been removed, we can move on.

Ave,
It is possible that the Mega changer is still responsible. I suspect it has a reasonable motor inside to turn a fully loaded carosel. It may have scrambled your DAC's.

Have you tried powering the Yammie all the way down? Not just sending it to standby... May be analagous to rebooting a PC.

If the above did/ does not do it I am at a loss. In an analog receiver I would assocaite the static while adjusting volume to a dirty potentiometer, but in a digital AVR... don't think this applies. How old is the unit?

I'll keep racking the brain here, and others may have more ideas, but a service call may be the inevitable...

[burdette]

Can't imagine it is the power line or some sort of interference when he has in fact narrowed it down to DSP effects, and *never* gets it without those effects in place.

Have you tried plugging the receiver into a different outlet? Just wondering about grounding... doesn't seem that would be isolated to the DSP modes, but you never know.

You're going to have to disconnect everything for a service call anyway.. so you might try pulling the receiver out of its place, getting it away from everything else, having ONLY it plugged into the outlet, connect ONLY one source component.. in other words, isolate it and minimize the connections and see what you get.

I really don't think it is the tweeters given that the problem is very obviously isolated to particular settings on the receiver, and the static is NOT always there.