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muting circuit

  1. dtone

    Audio Muting Circuit Question

    Hello - New guy here. Great site with great info, so figured I'd seek some assistance. I'm not an electronics tech/expert, but have basic knowledge/skills/tools and ability to learn. I have a 1990s era Roland GP-100 effects unit that stopped producing sound and think it might be related to the...
    • dtone
    • Thread
    • gp-100 muting circuit no sound
    • Replies: 11
    • Forum: DIY
  2. JoseHH

    TU-717 crackling noises in audio output, cutting out the sound intermittently

    This tuner worked fine for several years since I bought it second hand. Two years ago I noticed it began producing a crackling noise in FM and I thought it was bad reception. This problem slowly became so severe that it started to cut the sound intermittently which became a very annoying...
    • JoseHH
    • Thread
    • crackling noise ha1137w intermitent sound muting circuit tu-717
    • Replies: 8
    • Forum: Exclusively Sansui
  3. goldswimmerb

    7070 popping when relay closes

    Hey all, so I have what seems to be a simple issue, or so I thought it was... I have a 7070 here that makes a fairly loud pop when the relay closes, what I noticed was that if I disconnect the normally closed pins which have 12 or so V from the muting circuit the pop goes away, the muting...
  4. tusntuk2

    Sx-626 FM Stereo problem - Does this sound familiar? Need some help.

    Just finished recapping a lovely little SX-626, and the FM board doesn't want to go stereo. The Muting switch sometimes works, sometimes cancels all strong signals and goes silent. The Stereo light flickers while tuning, sometimes indicates stereo on weaker stations, but often does not glow on...
    • tusntuk2
    • Thread
    • awe-011 decoder fm stereo mpx multiplex muting circuit stereo light sx-626 tuning cap
    • Replies: 5
    • Forum: Pioneer Audio
  5. Brett Becker

    Pioneer SX-1080 - No Delay Before Speaker Relay Engages

    First post ever on AudioKarma so be easy on me. :) There is one issue I can't figure out on a beautiful SX-1080 I'm working on. There is no speaker muting delay when you first turn on the unit leading to a nice pop and some impressive speaker cone movement. You can hear the two relays...
  6. S

    Dual 1219 no sound except one moment on return

    I have a Dual 1219 that has given me mostly grief and occasional joy for many years. I was having issues with the headshell contacts slipping during playback, resulting in low hum and bad sound after playing a side. I replaced the tonearm wires and got good sound from one channel plus hum. I...
  7. tusntuk2

    How do you tell what is most important when substituting transistors?

    A constant topic - transistor substitution. I needed a sub for a 2sc1222, and as the dates on the threads change, so do the answers. Some is due to obsolescence, of course, but it is changes due to the understanding of how the transistor is applied in the circuit that seem the most important -...
    • tusntuk2
    • Thread
    • 2sc1222 compare transistors equivalent ka-3500 muting circuit transistor replacement transistor substitute transistors specifications
    • Replies: 6
    • Forum: Solid State
  8. Traverso

    Marantz 2270 muting blocking audio and no stereo

    Hello, Can you please help to solve the following new issues with my Marantz 2270, when FM is selected: 1- When muting is activated, there is no audio whatever muting preset level. 2- When muting is off, audio is there but no stereo. To be noted: The stereo lamps are displaying when Aux or...
  9. Chilliwack

    Technics SL-DL1 Distortion

    I posted this on another forum as well and thought it should be here as well since it doesn't seem to be a documented issue... Hope this helps someone: I've looked extensively around the internet and it seems that most people with this turntable or others similar blame distortion or sibilance...
    • Chilliwack
    • Thread
    • distortion low volume muting circuit muting relay sibilence
    • Replies: 0
    • Forum: Turntables
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