Strange buzz

dholmes
dholmes Posts: 1,136
edited December 2005 in Electronics
I sometimes get a buzz in my surround spks, What I found out is when I plug in my projector, not turned on, just plugged in thats what causes the buzz. After watching a movie, its not there anymore. I checked the wiring. no loose grounds, it check out okay! Wonder what it is? The plug for the projector is a outlet on the ceiling that was for a garage door opener. Also its part of a ground fault circuit. thanks
My HT set-up Panasonic front proj, 120 in ws screen, ATI amp,Integra 9.8 pre-pro, 2 Polk rti150, cp 1000, 4 fx 1000, Pioneer blu-ray 2 SVS sub pb 12-ultra 2, & Paragon popcorn popper. ps 3 Coaster leather HT recliners.
Post edited by dholmes on
· Share on FacebookShare on Twitter

Comments

  • jcaut
    jcaut Posts: 1,849
    edited December 2005
    dholmes wrote:
    Also its part of a ground fault circuit.

    First off, I'd eliminate that GFCI and see what happens. They're noisy. Is it a breaker? Should be easy to change, regardless.

    Jason
    · Share on FacebookShare on Twitter
  • okiepolkie
    okiepolkie Posts: 2,258
    edited December 2005
    Do your speaker wires run anywhere near the electrical wire in the ceiling or attic? If so, you may have interferance from it. Also, is the power wire for the projector on the same circuit as the plug for your other electronics. I don't know if any of these will help, just trying to talk it through with you.

    Zach
    Tschüss
    Zach
    · Share on FacebookShare on Twitter
  • dholmes
    dholmes Posts: 1,136
    edited December 2005
    Thanks everyone, I hate gfci plugs, they never trip when they should. The surround spks wire is far away from the electrical wire. I have always had trouble with buzz-hum, it seems to come & go. Im not a electrical engineer but I know a little about electric wiring. Ive checked the outside ground everything that I can think of. What has helped is a ground wire from my pre-pro to my Panamax power center, hum is almost gone. I wonder if a ground wire from my projecter to the plug would help?
    My HT set-up Panasonic front proj, 120 in ws screen, ATI amp,Integra 9.8 pre-pro, 2 Polk rti150, cp 1000, 4 fx 1000, Pioneer blu-ray 2 SVS sub pb 12-ultra 2, & Paragon popcorn popper. ps 3 Coaster leather HT recliners.
    · Share on FacebookShare on Twitter
  • Tour2ma
    Tour2ma Posts: 10,177
    edited December 2005
    Just for the hell of it, power your system down and then flip your HT breaker(s) a dozen times or so. Ditto for GFCI.

    Then power up and see if there's been any change.
    More later,
    Tour...
    Vox Copuli
    Better to remain silent and be thought a fool, than to open your mouth and remove all doubt. - Old English Proverb

    "Death doesn't come with a Uhaul." - Dennis Gardner
    "It's easy to get lost in price vs performance vs ego vs illusion." - doro
    "There is a certain entertainment value in ripping the occaisonal (sic) buttmunch..." - TroyD
    · Share on FacebookShare on Twitter