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pop noise on shutdown

  1. CosmoK

    Tandberg TR-2075 turn-off pop and restoration

    I've recently revived a TR-2075 and it sounds great. However, I have a loud pop that visibly moves the woofers when I turn the receiver off without disengaging the speakers via the speaker selector switch. This is a non-issue for me, since I'm used to turning down the volume and turning the...
    • CosmoK
    • Thread
    • pop noise on shutdown restoration tandberg tandberg tr-2075 tr 2075
    • Replies: 10
    • Forum: Solid State
  2. RICK KING

    Pioneer SA-9500 : Troubleshooting Noise

    Hi, I bought the SA-9500 new in early 1977, but pretty sure it is a 76. I have never serviced it. It sat from about 1990 until last year (2020) when I brought it out to use with my phono system. So was used almost every day for 16 years. I opened up and did basic cleaning and once pots and...
    • RICK KING
    • Thread
    • 1976 ground connection noise pioneer pop noise on shutdown sa-9500
    • Replies: 89
    • Forum: Pioneer Audio
  3. MattiaM

    Sony TA-5650 loud pop at power-off

    I recently refurbished a Sony TA-5650 v-fet, with a full recap, replacement of the killer diodes, addition of the voltage doubler on the power supply and replacement of the speaker relay. Bias adjusted fine at 50mV and the DC offset at the speaker output is about 2-3mv on one channel, and 15mV...
    • MattiaM
    • Thread
    • pop noise on shutdown sony vfets
    • Replies: 8
    • Forum: Solid State
  4. 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...
  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...
  6. N

    Yamaha CR-620 Pop sound when shutting off

    This receiver has a relay that puts a delay on turning the speakers on for about 3 seconds after you push the power button. When I shut the unit off, regardless of where the volume is set, there is a fairly loud pop sound in the speakers. Could this be related to the relay or am I looking at...
    • Natsil42
    • Thread
    • pop noise on shutdown
    • Replies: 29
    • Forum: Yamaha
  7. W

    Rotel RSX-972 Pops Upon Power Down. Advice?

    I'm working on this Rotel unit that had an output transistor blown on the right channel due to accidental crossed speaker wires. The offending transistor (and its matched partner and the emitter resistor) have been replaced. The amp now turns on and plays... However the DC offset on the output...
    • W.T. Holt
    • Thread
    • dc offset dc to speakers pop noise on shutdown receiver rotel rsx-972 stereo
    • Replies: 4
    • Forum: Solid State
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