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Yamaha RX-V596 humming
Hi, I have a Yamaha RX-V596 home theater that has all of a sudden started to hum, unit is about 8 years old. . You can hear it in all the speakers, it is coming from the unit itself, anyone know what I can do? Thanks, Adam
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#2
Posted to rec.audio.tech
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Yamaha RX-V596 humming
"Adamfarber" wrote in message
... Hi, I have a Yamaha RX-V596 home theater that has all of a sudden started to hum, unit is about 8 years old. . You can hear it in all the speakers, it is coming from the unit itself, anyone know what I can do? Thanks, Adam -- Adamfarber If the Yamaha were actually producing hum, this would indicate most likely a power supply problem. Normally the Yamaha's protection circuit would shut it down in this scenario. Does the problem with ONLY the speakers and no other devices hooked up? If not, perhaps a ground loop. This is not uncommon. If so, maybe a main power supply capacitor open circuit - I'm not sure if that would trigger the protect circuit. Mark Z. |
#3
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#4
Posted to rec.audio.tech
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Yamaha RX-V596 humming
On 6/13/2010 12:56 PM Adamfarber spake thus:
Hi Mark, I unhooked everything and hooked up a speaker to one of the outputs and listened to FM and I still heard the him. Thanks, Adam The "him"? Oh, you must mean the "hymn". -- The fashion in killing has an insouciant, flirty style this spring, with the flaunting of well-defined muscle, wrapped in flags. - Comment from an article on Antiwar.com (http://antiwar.com) |
#5
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[quote=David Nebenzahl;911263]On 6/13/2010 12:56 PM Adamfarber spake thus:
Hi Mark, I unhooked everything and hooked up a speaker to one of the outputs and listened to FM and I still heard the him. Thanks, Adam The "him"? Oh, you must mean the "hymn". Whoops, meant HUM, thanks, Adam |
#6
Posted to rec.audio.tech
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Yamaha RX-V596 humming
"Adamfarber" wrote in message ... David Nebenzahl;911263 Wrote: On 6/13/2010 12:56 PM Adamfarber spake thus: - Hi Mark, I unhooked everything and hooked up a speaker to one of the outputs and listened to FM and I still heard the him. Thanks, Adam- The "him"? Oh, you must mean the "hymn". Whoops, meant HUM, thanks, Adam Most likely a cap in one of the low voltage supplies has failed, feeding unfiltered DC to a regulator which cannot maintain smooth output voltage because the input is going to zero 120 times a second. You have to be a technician with troubleshooting skills, experience with AV receivers, test equipment and service information to fix this. Assuming that's not you, the unit needs to go to a Yamaha warranty station for repair (Yamaha's warranty stations have access not just to service manuals but also to confidential service bulletins, and more importantly they have access to the technical staff at Yamaha, which is the only really competent technical staff in the business). I can call Allen at Yamaha, give him the model number, and he'll tell me what the problem is and how to fix it because he and his staff know their equipment that well. Obviously, I work for a Yamaha warranty station. That's the only company we still do warranty audio work for, because it's the only one with a staff that knows a damn thing about their product. Well, them and McIntosh, but there are no Mac dealers around here, so they don't figure they need a warranty station here (Reno, NV). Fred -- Adamfarber |
#7
Posted to rec.audio.tech
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Yamaha RX-V596 humming
"Adamfarber" wrote in message
... 'Mark Zacharias[_2_ Wrote: ;911215']"Adamfarber" wrote in message ...- Hi, I have a Yamaha RX-V596 home theater that has all of a sudden started to hum, unit is about 8 years old. . You can hear it in all the speakers, it is coming from the unit itself, anyone know what I can do? Thanks, Adam -- Adamfarber- If the Yamaha were actually producing hum, this would indicate most likely a power supply problem. Normally the Yamaha's protection circuit would shut it down in this scenario. Does the problem with ONLY the speakers and no other devices hooked up? If not, perhaps a ground loop. This is not uncommon. If so, maybe a main power supply capacitor open circuit - I'm not sure if that would trigger the protect circuit. Mark Z. Hi Mark, I unhooked everything and hooked up a speaker to one of the outputs and listened to FM and I still heard the him. Thanks, Adam -- Adamfarber Well, you would need a schematic at this point, which brings up the question, are you a technical person and able to read the schematic? Mark Z. |
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