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Author Topic: Good contact cleaner for switches?  (Read 851 times)
KE2KB
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Posts: 524




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« on: September 13, 2017, 02:18:49 PM »

Hi;
I have pretty much completed restoration of my old HW-101 Xceiver. I seem to be having some trouble with the band switch, which is a multi-wafer rotary switch. After rotating the knob a dozen or so times, it has gotten better, but I would really like to do a better job at cleaning the contacts.

Any suggestions for a contact cleaner?

Thanks

Frank - KE2KB
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K8AC
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Posts: 1739




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« Reply #1 on: September 13, 2017, 04:13:30 PM »

I use DeOxit for switches.  You can apply it to each contact with a toothpick or a fine artist's brush. 
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KE2KB
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Posts: 524




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« Reply #2 on: September 13, 2017, 04:36:38 PM »

I use DeOxit for switches.  You can apply it to each contact with a toothpick or a fine artist's brush. 
Actually, I've got some of that. But I'm not sure I will be able to work it into the switch contacts. I'll have to see if I can gain access to them without too much trouble. Otherwise, I'll have to look for something that comes in a spray.
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SWMAN
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Posts: 1047




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« Reply #3 on: September 14, 2017, 04:14:56 AM »

 I use CRC , QD contact cleaner. Comes in a spray can.  You can get it at Home Depot. Works very good for me.
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KD8IIC
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Posts: 594




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« Reply #4 on: September 14, 2017, 04:57:43 AM »

  WD40 is good in a pinch!
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KA5IPF
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Posts: 1387


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« Reply #5 on: September 14, 2017, 06:03:53 AM »

Don't use WD40 on Kenwoods. It dissolves the wafer material. I don't know why, they just crumble after a bit.
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KA0SBL
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Posts: 61




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« Reply #6 on: September 14, 2017, 11:26:19 AM »

I use DeOxit for switches.  You can apply it to each contact with a toothpick or a fine artist's brush. 
Actually, I've got some of that. But I'm not sure I will be able to work it into the switch contacts. I'll have to see if I can gain access to them without too much trouble. Otherwise, I'll have to look for something that comes in a spray.


Sometimes a syringe & needle works to get just a drop or two in the right place, sans oil slick in your radio.

 Grin
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KD0REQ
Member

Posts: 1998




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« Reply #7 on: September 14, 2017, 07:17:16 PM »

DeOxit in the original steel needle squeeze bottle can put a fractional drop just about anywhere you can stick a toothpick in.  just on the contact, please, all this stuff can arc over if there is enough DC being switched, and then you can have carbon tracks.
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