#92527 - 02/01/13 01:33 PM
Re: AV7005, Oppo 103 and Epson PJ
[Re: vp8000]
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Desperado
Registered: 11/13/02
Posts: 336
Loc: Illinois
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Easy to understand your frustration and length of post to express it but HARD to figure out what circumstances have NEVER had intermittent "buzz from speaker" and which have resulted in that problem... I suspect that you may have a fault in the case of the 7005 and/or the cable jacket. I know it sounds a little goofy but I have seen audio installers resort to literally layering the whole metal back panel of a PA amp with gaffers tape to prevent any electrical connections from getting shorted against the case... Not gonna say I would recommend going to such a length but if you can isolate this to just the one input you might try to cut a little template out of insulating electrician's tape so that it prevents any metal-to-metal contact... The smooth vinyl products from 3M work well for this -- http://www.globalindustrial.com/p/janito...66-100-per-casehttp://www.globalindustrial.com/p/janito...CFacWMgod_D8AMQHey again guys,
Now this is what is going on!!!!
I have an XBox 360, Samsung cable box, PS3, Nintendo WII, Sony ES CD player, Oppo 103, Outlaw Audio 7700 amp, Toshiba 50 inch DLP TV, Epson 5020 and a Marantz AV7005 all running into 2 Panamax 5300's. The 3 new components are the Epson PJ, Oppo 103 and Marantz 7005 which I nstalled a few months ago. They replaced a panny PJ, Pioneer BDP51 and Outllaw 990 Pre. With the old system I never had anything more then a slight hum. Right before I added in the new components, the system started to hum louder. I didn't do anything about it as I knew I was changing some of the pieces so I would deal with it then, nothing new was done to the house.
I installed all the new equipment, all new cables, turned it on and the dam hum was still there. I pulled the cablebox in wire, hum gone. Purchased a Jennson transformer isolater, installed, hum gone. Great!! Next time i turned it one, hum came back, equal in all speakers, volume does not effect it, steady buzz. I started pulling wires trying to isolate it. When I pulled the PJ HDMI, buzz stopped. Someone on this forum asked me if the PJ was plugged into the Pannamax, it was not as it is on the other side of the room. I ran a cord over from the PJ to the Panamax and the hum stopped again. I then ran SJ cord 14/3 from the PJ to the Panamax, turned everything on, hum was back, this time in only the rear right speaker. I am running a 5.2 set up.
I pulled all the cables etc and couldn't find what was making the buzz. I switched the wire from one speaker to the other, the buzz followed, it was in that wire. At this point I was so pissed off I decided to run a dedicated 20 amp circuit from my panel to my componenets. Using 12-3 i ran the circuit with an isolated ground and used that type of recepticle. Plugged everything into that circuit, still buzzes from the rear right speaker.
I was playing around with the back of the Marantz 7005, I pulled out HDMI 2 cable which runs to the Toshiba TV, buzz still there, when I went to put it back in, I was off a little and the HDMI end was tapping the back of the 70005, I heard static and all of a sudden, bam, the buzz went quiet. I plugged back in the HDMI cable to HDMI out and the buzz was still gone. I shut down, turned it back on, buzz back, still out of the rear right surround speaker.
Again, I tap the cable to the back ot the Marantz, some static and the buzz goes quiet again. WTF!!! If the HDMI cable taps a back screw on the Marantz, the buzz stops also. Almost like a capacitor is discharging.
What is going one, can someone please help me on this one, I am at a loss here. Brand new 20 amp circuit, isolated ground, nothing on the line but my home theater, back right speaker buzzing kind of loud, then tap HDMI out 2 from Marantz, static then quiet???
I tried it with HDMI 1 out of the Marantz and nothing. This is the one to the PJ which is a Monoprice 60 foot Redmere cable. It is the only Redmere cable I am using.
Sorry post is so long, I tried to keep it as short as I could.
Thanks!!!!
Brian
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#92528 - 02/01/13 03:43 PM
Re: AV7005, Oppo 103 and Epson PJ
[Re: vp8000]
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Gunslinger
Registered: 12/01/06
Posts: 131
Loc: NJ
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Thanks but I am not sure I follow you here. Fault in the case? The unit is only a few months old. Should I return it and get another one? Why only the one speaker? Why when I touch the HDMI cable to the back does the hum go away and stay away until I turn it back on. Also if I turn it back on with the HDMI cable off, it still hums.
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Brian
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#92529 - 02/01/13 06:41 PM
Re: AV7005, Oppo 103 and Epson PJ
[Re: vp8000]
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Desperado
Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
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Check the back of the 7005 for any stray wires touching the case. You may have found the problem in that HDMI connector. One of the majors gripes about HDMI is the weakass connector they chose. Maybe it is not grounded correctly internally. I would write up all of your efforts so far and send the unit back for repair. I would be very careful disconnecting and reconnecting cables with the power on. Most of the signal cables you are dealing with are meant for very small voltages and a static discharge could be disastrous much less one from an energized source. When you say "bam" were you describing the sound or your astonishment like Emeril. A loud noise would be a bad thing.
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Music system Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD APC H15 Power Conditioner
TV System Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv
Home Theater System Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv Harmony ONE Blue Jeans and Monoprice interconnects APC H15 Power Conditioner
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#92531 - 02/01/13 11:08 PM
Re: AV7005, Oppo 103 and Epson PJ
[Re: vp8000]
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Gunslinger
Registered: 12/01/06
Posts: 131
Loc: NJ
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Thanks, "bam" was my reaction as I have had it, hah. I just don't know where to begin again. Brand new 20 amp circuit with isolated ground, I was sure it would be pin drop quiet at this point. Also the 2 brand new Panamax 5300's. I am just so drained from all this. I just want to sit back and relax and enjoy my equipment, but this darn noise is killing me.
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Brian
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