#92289 - 01/07/13 07:05 PM
Re: 7700 Hum
[Re: rubbersoul]
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Gunslinger
Registered: 12/28/05
Posts: 99
Loc: Rhode Island
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What if the idea that the voltage in out out of the house is the issue? Then I waste my time and money bringing into the shop.
Is there a chance you could bring the amp to a friend's/ relative's house for testing purposes?? As I have mentioned in other posts, I have had amp hum at certain times of the day...all told, maybe about 1% of my listening or TV viewing (and its at a very predictable time of the day-I sometimes go week's at a time without hum). When I first bought the 7500, I tried everything to track it down..no luck. Who knows, the frequency of it happening since then has greatly diminished. I know another time when the hum reappeared, it turned out to be a faulty old desk lamp that must of been on the same circuit. As I said in other post, I really believe it originates with the power grid (its a very old neighborhood/no upgrades in line transmission). I do have DIRECTV; there is a ground wire outside the house, i.e., that I would assume there is a ground rod associated with that wire. I would really try and move the amp to another location for testing purposes.....
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Anthem MRX-500/ Outlaw 7500, Paradigm Studio 100's Fronts, Paradigm CC-590 Center, Phase Technology Dipole rears , Martin Logan Dynamo sub, Oppo BDP-103, DIRECTV H22-200 DVR HD receiver, Samsung PN60E8000 3D Plasma 60" 2nd System B&K ST 202 Amp, Outlaw 990, Rotel RCD 1072CD, Yaqin CD 1 Tube Buffer, Apogee Centaur Minors, Phase Technology Model 10 Sub, Rotel RP-855 turntable, Panasonic DMP-BD30, DIRECTV H21-700 DVR HD receiver, Free Agent Home Theatre+, Vizio 40" LED
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#92290 - 01/07/13 07:10 PM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
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I would do the inspection at least to get an idea of the scope of the repair. I saw a review of a Yamaha Aventage reciever and they wrote about Yamaha installing a fifth foot under their torroidal transformer because the weight was a concern. Maybe you could temporarily install a piece of wood or rubber of the correct thickness to prop up the middle under the transformers.
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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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#92301 - 01/08/13 10:39 AM
Re: 7700 Hum
[Re: XenonMan]
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Desperado
Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
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Up early today Just uncovered the 7700. Pretty cool! Wish I knew what I was looking at haha. Have to lighten up a bit. I did what i would call routine inspection and did not fine any LOSE parts.
I called the electronic repair shop that I have dealt with previously and spoke to the owner about my problem. Off course he did reccomend NOT doing my inspection saying I could make matters worse. I am bringing it in today. He told me he will be able to evaluate the 7700 this week maybe Thursday. On the phone he told me it sounds like a power source problem but he would have to look at it. I am bummed especially if I do not get this back in time for the Super Bowl. Unfortunately it is out of my hands. I will get back to everyone as soon as I get any updates.
I do appreciate everyone's input on this subject and I really was hoping to fine the problem myself.
Does anyone know if it is a part issue can the service shop get parts from Outlaw and if not would they be able to get the same quality parts from somewhere else?
Thanks
_________________________
Outlaw 990/7700 Conrad Johnson Premier140 Tube Amplifier Conrad Johnson 17LS MKll Pre Amp B&W 803D2’s HTM3S DS7's HSU Subwoofer Mitsubishi 6800 Projector Da-Lite Screen, Oppo BDP93 Comcast PS Audio DSD Stack Variac Kill-O-Watt Nakamichi cables Audio 8 cables Air-Server Mac-Mini ROON
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#92302 - 01/08/13 11:46 AM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 11/11/09
Posts: 514
Loc: Canton, MI
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If it's a part issue and the the shop is a good as you say then they should be able to pull the part number off the offending part and get the exact replacement from a distributor or, in some instances, directly from the manufacturer.
Unless it's a custom part with a sole source agreement, of course...
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#92303 - 01/08/13 12:43 PM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
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The likely direct source of parts would be ATI since they built the amp for Outlaw. Keep us posted as to progress and what the shop finds. I had my 7125 repaired by Outlaw several years ago and it was back within 10 days. Your local shop should be able to match that I would think.
_________________________
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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#92306 - 01/08/13 02:26 PM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
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Just dropped the monster (7700) off at 12:30 EST. They said they should be able to look at it tomorrow. I asked for the chances of it being fixed by Super Bowl Sunday and they said I should have it "way before that". We will see. I will kept you guys up to date. I am really curious as to what the problem is with the 7700. Just as anxious to hear that information as I am to getting the amp back and on-line.
_________________________
Outlaw 990/7700 Conrad Johnson Premier140 Tube Amplifier Conrad Johnson 17LS MKll Pre Amp B&W 803D2’s HTM3S DS7's HSU Subwoofer Mitsubishi 6800 Projector Da-Lite Screen, Oppo BDP93 Comcast PS Audio DSD Stack Variac Kill-O-Watt Nakamichi cables Audio 8 cables Air-Server Mac-Mini ROON
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#92312 - 01/08/13 06:46 PM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
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Hopefully it is something simple. If it is a delaminated transformer core it should be a simple repair. Did you ever notice any noise in your speakers?
_________________________
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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#92319 - 01/09/13 12:22 PM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
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No XM. The humming was strictly from the speaker. I am hoping that I hear from the repair shop by tomorrow since he said he would probably be evaluating it today.
_________________________
Outlaw 990/7700 Conrad Johnson Premier140 Tube Amplifier Conrad Johnson 17LS MKll Pre Amp B&W 803D2’s HTM3S DS7's HSU Subwoofer Mitsubishi 6800 Projector Da-Lite Screen, Oppo BDP93 Comcast PS Audio DSD Stack Variac Kill-O-Watt Nakamichi cables Audio 8 cables Air-Server Mac-Mini ROON
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#92321 - 01/09/13 03:13 PM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
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RS did you mean strictly from the amp?
_________________________
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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#92342 - 01/11/13 10:09 AM
Re: 7700 Hum
[Re: rubbersoul]
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Desperado
Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
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Sorry XM. I just saw this. The hum was strictly from the AMP. They have had the 7700 since Tuesday at 10 am. They told me that they would for sure be evaluating it the next day (Wednesday). This is Friday and I have not heard anything. I intend to speak to them today at High Noon.
Will keep you in the loop. Thank you for your interest.
_________________________
Outlaw 990/7700 Conrad Johnson Premier140 Tube Amplifier Conrad Johnson 17LS MKll Pre Amp B&W 803D2’s HTM3S DS7's HSU Subwoofer Mitsubishi 6800 Projector Da-Lite Screen, Oppo BDP93 Comcast PS Audio DSD Stack Variac Kill-O-Watt Nakamichi cables Audio 8 cables Air-Server Mac-Mini ROON
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