Mini-tutorial: How to disassemble Marantz pushswitches for better cleaning/de-Oxiting

Discussion in 'Marantz Audio' started by Leicalover, Nov 30, 2009.

  1. ringading

    ringading AK Subscriber Subscriber

    Auburn, WA
    My experience:

    I had a sticky mono switch on a Marantz 2230 and despite trying Deoxit it would not work properly. Getting the switch apart was pretty easy and cleaning it was straightforward. My issue was getting the little metal pin at the top of the switch to go back in correctly. It took dozens of tries with lots of losing the pin and needing to go looking for it inside the unit. Many bad words were uttered.

    It is not for the feint of heart but sometimes there is no other options available other than replacing the whole switch. Just be prepared for a ;ot of trial and error and keep track of that little pin should it go off on its own adventure.
  2. SoCal Sam

    SoCal Sam Lunatic Member

    I've had dozens of vintage Marantz come through here and most had dirty and or stuck switches. IME, they were all cleanable without taking them apart. The flush method works. I put a 90 degree bend at the end of the straw to better target the seams.
  3. EchoWars

    EchoWars Hiding in Honduras

    Kansas City
    Well, if you look there's also a hole in the top of the switch body. Fill the whole damn body with D5 and work it around. Between that, and shooting it in from the front only the worst should still be a problem.
    quadtech likes this.
  4. Southpaw69

    Southpaw69 Active Member

    Great thread!

    This thread gave me the inspiration to tackle my 2230 and give the switches and knobs a good going over.

    My 2230 would crackle, buzz, and the left channel would come and go- but now, all is well!

    I didn't take the push switches apart- I just shot some D5 in, worked them back and forth several times, then hit them with some F5, and worked them some more.

    I had that wacky blue power switch, that would feel really sluggish, and didn't go on & off easily- I hit it with some D5, and worked it back & forth for a while, and wow, what a difference. It's not perfect, but works MUCH better.

    In the near future, a recap is coming!
  5. Moska77500

    Moska77500 New Member

    Hello Mr. harleyrider: I did exactly what you mentioned on your tutorial. My Marantz 2220 looks brand new now. THANKS !!!!

    From Buenos Aires, Argentina. Alex.
  6. Gregoire

    Gregoire Turn up the music, HI as FI can go... Subscriber

    Delaware, OH
    Leicalover likes this.
  7. tbone8

    tbone8 Active Member

    I had to replace a busted button, thank goodness this topic was posted. All went well except for getting the rascal back together. I used some floss to tie sides of the spring compressed and just cut it with a razor blade. I don't know how in the world a guy could get that little retainer slipped back in without that spring compressed. Hope this helps anyone doing this task.:beerchug:

    Croaker likes this.
  8. jFF_Bulbo

    jFF_Bulbo Member

    How do you remove the aluminium covers of the botton? thank you
  9. Beamer302

    Beamer302 AK Subscriber Subscriber

    Try freezing them and then drop them into a pot of hot water. It rapid expansion should pop the glue holding the plastic insert. Use the right size screw driver to twist the insert. Just a suggestion. Good luck
    jFF_Bulbo likes this.
  10. jFF_Bulbo

    jFF_Bulbo Member

    Leicalover likes this.
  11. Leicalover

    Leicalover Love vintage cameras too!

    Darmstadt, Germany

    sorry for the late response, I am not here much often any more.....

    Just pull them down. Sometimes it works, sometimes not. If not, don't pull too heavy, there is the risk, that the shaft will break.
  12. orsen

    orsen just another old cheapskate that likes audio Subscriber

    i have also gently slipped a tiny jewelers screwdriver under the top to get the spray in there
  13. paultlaw

    paultlaw Active Member

    It is a pity that all the pictures in the thread are not there anymore. It seems all the pictures have been disappearing from threads lately, or is that just me?
  14. Rockyhill

    Rockyhill "I rarely rip CDs but when I do, I rip to FLAC" Subscriber

    Not just you. It’s a combination of AK migrating to the XenForo platform and photobucket disabling photos on third party sites (unless you pay a fee).
  15. grampa48

    grampa48 New Member

    Wow! great presentation and pics! I was under the impression that all of my scratch and dropouts were coming from the various pots including the balance, I will clean these as soon as the truck project is out of the garage! Do you have any switches or a balance pot by chance? Over the years and times this unit sat on the floor I broke the metal knobs off the on off switch and the balance pot.
  16. thxdave

    thxdave Lava Lamp repairman Subscriber

    Has anybody tried the new Caig L260 grease on these switches? From their description, it seems like it would be perfect for lubrication as well as keeping the contacts clean. They have an offer right now (Feb. 2018) for a free sample so I might try it on my current rebuilds.
  17. Mike Sweeney

    Mike Sweeney AK Subscriber Subscriber

    Orange CA
    yes I have.. I use it for the slide switches and I use in rebuilding the power switches.

    This thread shows the rebuilding of the power switch with the L260 grease.

    I've been very happy with it. On the speaker switches I just did, I measured a .5 ohm decrease after cleaning and using the grease.

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