i have my onkyo 876 connected to my MF A5CR Pre Amp with a 5m set of rca interconnects to the Home Theatre pass through - if i change to the HT setting on the pre amp with the onkyo off i get a mass of noise/interference through front two speakers that i can hear from my sofa - if i then turn on the onkyo and press mute on the onkyo it is silent - can't hear it when the onkyo amp is on either as seems to disapear, any ideas - not a major problem but bugs me!!!!
grounding/interference problem? how do i cure it?
- Thread starter matengawhat
- Start date
Sounds like a grounding problem.
What happens if you disconnect the interconnects at the Onkyo end and turn to the AV input?
It could be that the cables are picking up some hum, but this vanishes when the Onkyo is in circuit, unless the noise is still there when the Onkyo is on, not muted, but not passing any signal.
The simple answer seems to be to turn the Onkyo on before switching to the AV input on the preamp - you could drive yourself crackers trying to find the problem, which may be something as mad as interference from your TV or anything else connected to the Onkyo.
What happens if you disconnect the interconnects at the Onkyo end and turn to the AV input?
It could be that the cables are picking up some hum, but this vanishes when the Onkyo is in circuit, unless the noise is still there when the Onkyo is on, not muted, but not passing any signal.
The simple answer seems to be to turn the Onkyo on before switching to the AV input on the preamp - you could drive yourself crackers trying to find the problem, which may be something as mad as interference from your TV or anything else connected to the Onkyo.
its fine when onkyo is on can't be heard during quiet seens - think it is sky tv related as can hear voices very faintly - no jokes!!!!
have a second just rack stand arriving tomorrow so will be rewiring everything extensively so hopefully maybe that will cure it
have a second just rack stand arriving tomorrow so will be rewiring everything extensively so hopefully maybe that will cure it
Even with the Sky box off? Could be interconnects acting as an aerial and picking up other people's TV, radio or even the local minicabs!
not tried with sky box off but will tomorrow as turned everything off - def was tv of somesort as could hear male/female voice and canned laughter
noticed can hear hum when onkyo on when all very quiet - have rewired everything and bought new interconnects - not helped - any ideas for possible causes/solutions?
Tried the standard troubleshooting techniques?
First try disconnecting the coax cable from the wall to the skybox, as this is a common culprit. Then continue by turning off the amp, disconnecting a piece of equipment from it, turning on the amp, testing, turning off the amp, disconnecting another, testing etc. until you find the culprit.
The solution depends on which item is causing the problem.
First try disconnecting the coax cable from the wall to the skybox, as this is a common culprit. Then continue by turning off the amp, disconnecting a piece of equipment from it, turning on the amp, testing, turning off the amp, disconnecting another, testing etc. until you find the culprit.
The solution depends on which item is causing the problem.
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