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pop noise on power up

  1. D

    Sansui 9090DB Poppy Buzzy Bass

    Hello! I have been playing my rebuilt 9090DB for about a month now. Yesterday I finally was able to turn it up to see how she sounds on a higher volume. I did a full recap, replaced fusible resistors on the driver board, replaced some diodes, rebuilt the bridge rectifier, fixed the through...
    • degdug
    • Thread
    • 9090db bass driver board help pop pop noise on power up repair advice
    • Replies: 5
    • Forum: Exclusively Sansui
  2. Halisson

    Sansui QRX9001 POC Speakers on 2x mode

    Hello everyone, I'm having trouble with a Sansui 9001. The equipment is in very good aesthetic condition and little or no technical intervention. I did preventive maintenance replacing the resistors and transistors to92 of the F2624, overhauling the output transistors, replacing the capacitors...
  3. robitaille03

    Proton D1200 strange behavior

    I have a Proton D1200 amp and every once in a while when I power it up and play something, the left channel is at a much lower volume and the sound is distorted ... if I turn the volume all the way down, the left VU meter will not bottom out, instead it'll read around 0.01 but no sound is heard...
  4. camgilbert

    Marantz 1150D Snap Pop!

    Hi gang, I have an 1150D that send a power surge through both channels at power on and off and makes a loud pop just prior to the relay clicking in or off (power on or off) I have rebuilt the power supply P800 (replaced all caps and trs 2 x 313 and 1 x 507) I have also replaced caps and relay...
  5. The Stone

    Need help with 2275 pop on power up power down

    My friend wants me to take a look at his 2275, I told him it is probably the dc offset. The pop occurs when the speaker relay engages or when turned off. I read the explanation in the service manual on how to do it, but I have a feeling there are some weakening components changing values from...
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