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When it comes to contact cleaner...

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When it comes to contact cleaner... Empty When it comes to contact cleaner...

Post by JasonAMFM on Sat Aug 23, 2014 3:02 pm

I've been using Radioshack's non corrosive lubricant spray. ( the one with a little DeoxIT in it.) Seems to work alright. Good enough? Or should one shell out the bucks for actual DeoxIT?
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Post by Wildcat445 on Sat Aug 23, 2014 3:37 pm

I see no need for DeoxIT. I use the cheapest contact cleaner I can find, usually at Walmart, then use a squirt of WD-40 to add a little lube. I have done this for many years with good results. Your results may vary.

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Post by Ragwire on Sat Aug 23, 2014 4:46 pm

I only use deoxit if it is really corroded. It turns copper black. I usually use the RS tuner cleaner lube that you got.
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Post by mr_ed01 on Sat Aug 23, 2014 8:03 pm

Has anyone tried WD40 Specialist Electrical Contact Cleaner?

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Post by Wildcat445 on Sat Aug 23, 2014 9:15 pm

I'm not familiar with that.

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Post by mr_ed01 on Sun Aug 24, 2014 10:41 am

Internet link: http://www.wd40specialist.com/products/contact-cleaner/

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Post by Dr. Radio on Sun Aug 24, 2014 1:39 pm

I don't waste time with "specialty" mixtures.

I can go into any respectable auto parts store or big box store's electrical or automotive section and pick up a can of this for sometimes less than $6.00 or $7.00...It's fantastic, I've used it for years!

http://www.crcindustries.com/ei/product_detail.aspx?id=05101

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Post by JasonAMFM on Sun Aug 24, 2014 2:49 pm

The Radioshack lubricant/contact cleaner that Ragwire and I mentioned has worked well pretty well for me. I acquired an late 60's Phillips AM/Shortwave (can't find model number, best I can figure is it's a European-made LX-something or other) for less than a dollar. I think they thought it was broken. Couldn't get a station, and nothing but scratchy fuzz when playing with the dials. I used the RS lube to clean it out, and it now has pretty decent reception. Only problem I've found is that The RS can leave a pretty oily residue if you use just a tad too much. How's the CRC when it comes to that issue?
To Ragwire: Have you had any residual problems with the one we've been using? Heh, see what I did there?  Very Happy  I have a soft spot for corny humor.
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Post by Dr. Radio on Sun Aug 24, 2014 5:13 pm

Jason,

That's why I like the CRC-- it evaporates very quickly and leaves NO residue.

I've used it on everything from vintage car electrical harness connections to modern surface mount component circuit boards.

Just make sure you buy the right can if you go this route. They also make brake cleaner and starter/alternator cleaner and the cans all use the same color scheme, but they do clearly state what they are.
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Post by JasonAMFM on Sun Aug 24, 2014 5:40 pm

Ha, some brake cleaner in a pot or a band switch might just ruin your day. I'll keep that in mind
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Post by Ragwire on Mon Aug 25, 2014 10:31 am

JasonAMFM wrote:when it comes to that issue?
To Ragwire: Have you had any residual problems with the one we've been using?  Heh, see what I did there?  Very Happy  I have a soft spot for corny humor.  
Oh yeah. I always have oil to clean up.
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Post by 75X11 on Mon Aug 25, 2014 11:04 am

This is the contact cleaner I use at work and at home on accessible devices. It rinses the tarnish off of silverplated contacts the film from gold plated contacts and leaves no residue. http://www.cvs.com/shop/product-detail/CVS-91-Isopropyl-Alcohol?skuId=216440 I have used the CRC contact cleaner on the harness on my Mustang and it has done well. One thing, though when trying a new brand of solvent or contact cleaner, I always try to try it on some plastic scraps I have in the shop. sometimes they can melt or disintegrate some types of plastic or liquefy paint and it is bad to find it out after you have drenched your work in it.
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Post by willy3486 on Mon Aug 25, 2014 11:27 am

75X11 wrote:This is the contact cleaner I use at work and at home on accessible devices.  It rinses the tarnish off of silverplated contacts the film from gold plated contacts and leaves no residue.  http://www.cvs.com/shop/product-detail/CVS-91-Isopropyl-Alcohol?skuId=216440  I have used the CRC contact cleaner on the harness on my Mustang and it has done well.  One thing, though when trying a new brand of solvent or contact cleaner, I always try to try it on some plastic scraps I have in the shop.  sometimes they can melt or disintegrate some types of plastic or liquefy paint and it is bad to find it out after you have drenched your work in it.


I second that about trying it out on plastics first. I work on computers for a living and I use all types of stuff. One time I had some cleaner or something that had "safe for plastics" all over it. I used it on a apple computer and the computer shell fell apart all over the place. So I always try it out,regardless of what they have on it. I also use the stuff like CRC cleaner. GC electronics has some good chemicals if you can find it. For stuff I want a light coating left on I use their Jiffy bath.

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Post by Resistance is Futile on Mon Aug 25, 2014 4:34 pm

I trust Deoxit. It was used in all Military communications equip. that I ever worked on.
It has silver cleaner in some types, but also lubricates moving parts, it also leaves a protective film to prevent further corrosion. They have some that are specifically for gold use.

Of course we also would prep. with steam cleaning on harnesses and mechanical, and circuit cards- we also used dishwashing machines that would run till the water had no measurable contaminates. (computer controlled)

One of our favorite cleaners was Freon, with Iso-Alcohol running a close second.
If that RadioShack cleaner has a small Deoxit label then probably has some in it.
Craig products are very reliable.

If people have problems with using any of the above mentioned products, then there are underlying or hidden application issues.

There are some cleaners that claim to be good on electronics, but may not. The best bet is to use mil-spec approved cleaners for specific tasks. You can find the mil-specs online.
Usually if the mil-spec is printed on the label it has been exhaustively tested to meet military requirements.
Some cleaners will melt plastics, erode or dissolve print on circuit cards and even the components.
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Post by 75X11 on Mon Aug 25, 2014 5:11 pm

When I worked at Sperry Univac, we used recirculating freon baths to clean products. That stuff was a miracle. I still have half a can of chemtronics freon in the freezer for emergencies. At the Motorola shop I worked in. we got in a new case of contact cleaner to try. 45 minutes after I used it on 3 HT600 radios, the housings began to split and crack open and fall off the innards. I have always tested new cleaners since.
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Post by willy3486 on Mon Aug 25, 2014 5:26 pm

Speaking of freon/Air conditioning here is a story my BIL told me. He was at the Jack Daniels Distilery here in TN. He was working on their AC chillers or something. They went into one of the buildings and when they came out he said there was a rattlesnake in front of the opening. The guy there said I will take care of him. They use liquid nitrogen there and he went over and sprayed some on the snake. It instantly froze. He took a shovel and scooped it up. He dropped it on the ground and it shattered into a bunch of pieces. Thats one way to get rid of a snake.

Another time I had a can of freeze it that you use to test components. . If you turn it upside down it would be even colder. I was dating this girl at the time and I was getting tired of her constant fussing and griping. So I didn't care if I made her mad. She saw the can of freeze it in my truck and asked what it was. I told her what it was and it even had it on the can. She didn't believe me and said its not that cold,spray it on my hand. So I turned the can upside down and sprayed her hand. She fussed but it was fun to actually do something to deserve the fussing I got.

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