Marantz 2220 selector switch problem

Discussion in 'Marantz Audio' started by Andy Hi-Fi, May 15, 2017.

  1. Andy Hi-Fi

    Andy Hi-Fi New Member

    Messages:
    33
    Location:
    NJ
    I've been doing a restoration on a 2220, I upgraded the P-800 power supply, P-500 pre-amp and P-900 phono boards so far, anyway I'm no sure if I noticed this before but when I switch from phono to fm or from am to fm on selector switch I hear a loud click in the left channel only, you hear it even if the balance is all the way to the right channel and volume all the way down, phono to aux or aux to phono no problem only to fm. It's not a big deal but annoying. Has anyone noticed this one before, also you hear it through the headphones also in left channel only.
     
  2. Steven Tate

    Steven Tate AK Subscriber Subscriber

    Messages:
    2,123
    Location:
    Burleson, TX
    I would start with a good Deoxit cleaning, multiple times while working the switch through it's various positions.
     
  3. tranguru

    tranguru Active Member

    Messages:
    131
    Location:
    Brussels
    Maybe there some DC on the line.

    Maybe the phono P900 amp is leaky. check the output of the p900.

    luck
    Robin
     
  4. Andy Hi-Fi

    Andy Hi-Fi New Member

    Messages:
    33
    Location:
    NJ
    I did the Deoxit cleaning a few times and click is still there , strange it's only in left channel, could it be in the FM board I believe the P-200, maybe leaky caps?
     
  5. Andy Hi-Fi

    Andy Hi-Fi New Member

    Messages:
    33
    Location:
    NJ
    I restored the P-900 board over the weekend, changed (7) e-caps, (2) film caps and (2) 2SC458's transistors.
     
  6. rBuckner

    rBuckner Luv 2 Restore Subscriber

    Messages:
    9,314
    Location:
    Prescott, Arizona
    Post a clear picture of the P900, perhaps something is amiss that someone will spot.
     
  7. Bert 1100

    Bert 1100 Super Member

    Messages:
    1,098
    Location:
    Planquiri, Switzerland
    I restored two 2220's, and if I remember well, on both of them there was a SMALL ticking sound on both channels when switching to FM. Just a small short "tick" sound, nothing that made me worry.
     
  8. Stereo501

    Stereo501 New Member

    Messages:
    1
    Pop noise on selector switches comes from DC going through the switch and it is present only when the switch is moved from source to another, usually is a leaking capacitor, using an oscilloscope see the signal going through and if you see a dc component, follow it through the circuit to find the defective capacitor, it could come from the previous stage or the next one, you can also use a voltmeter in the low voltage scale, just be sure that there is no signal going through and the volume control is all the way down.
     
    Aaron99 likes this.
  9. Aaron99

    Aaron99 AK Subscriber Subscriber

    Messages:
    210
    Location:
    Vancouver WA.
    Funny you posted today. I was going through a 2220 today and I notice the same symptoms as the OP. A slight click when switching to FM on the left channel only. I am working on troubleshooting the issue with the oscilloscope.
     
  10. Aaron99

    Aaron99 AK Subscriber Subscriber

    Messages:
    210
    Location:
    Vancouver WA.
    Did you ever figure out the source of the click?
     

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