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 Post subject: Clean Rite Purple Power and Brakleen/Lectra-Motive cleaner
PostPosted: Aug Fri 04, 2017 10:32 pm 
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Joined: Mar Mon 05, 2012 6:35 am
Posts: 233
Location: Chicagoland, 60194
While cleaning my Sencore TC-130 I did exactly what this guy says not to do.
After pulling the meter, I sprayed the guts with Clean Rite Purple Power, rinsed it under a hot water faucet, and blew out it out with compressed air. It looked great and then I read this blog:
http://tubesound.com/2008/08/12/repair-calibration-sencore-mighty-mite/

According to this guy, the purple power stuff leaves a microscopic conductive film that ruins the leakage test function of this tester.

After that screw-up I went to my local farm store and got a can of CRC Brakleen (red) and CRC Lectra-Motive spray. Both cans contain tetrachloroethylene 127-18-4 and carbon dioxide 124-38-9, both smell the same, and both have the same nozzle and straw. The only difference seems to be that Lectra-Motive is harder to find, costs more money, and has different graphics on the label. They do eat plastic so you have to be careful what you spray, but the tester survived and the leakage function works as it should.

Matt


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 Post subject: Re: Clean Rite Purple Power and Brakleen/Lectra-Motive clean
PostPosted: Aug Sat 05, 2017 4:16 am 
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Joined: Jan Wed 11, 2012 5:12 pm
Posts: 453
Location: Colorado Springs, CO
Purple Power is great stuff - for cleaning my car engine. I never thought of using it on electronics.

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 Post subject: Re: Clean Rite Purple Power and Brakleen/Lectra-Motive clean
PostPosted: Aug Sat 05, 2017 6:31 am 
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Joined: Sep Sat 27, 2014 10:43 pm
Posts: 170
Location: Spanaway, Wa.
I use purple power to clean tuning caps then rinse thoroughly and have never had a problem,although it may cloud shiny aluminum.

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If they can't find you handsome at least they can find you handy !! Red Green.


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 Post subject: Re: Clean Rite Purple Power and Brakleen/Lectra-Motive clean
PostPosted: Aug Sat 05, 2017 11:39 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 7751
Location: Cleona, PA
I use CRC Electronic Cleaner, available at auto parts stores everywhere, not expensive, and since it's specifically for electronics, there's no need to go to brake cleaners, etc. Won't harm most plastics, it says.


Attachments:
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Reece
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 Post subject: Re: Clean Rite Purple Power and Brakleen/Lectra-Motive clean
PostPosted: Aug Sat 05, 2017 12:39 pm 
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Joined: May Wed 31, 2017 11:39 pm
Posts: 56
Location: Mansfield, PA
I recently used CRC Spray MAF (Mass Air Flow sensor) cleaner on our Crosley's volume pot. It is also "plastic safe" and dries without leaving any residue. Only reason I used this rather than the electronic cleaner is that I had it on hand. Wouldn't surprise me if it is the same stuff in a different can.

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Do what you can, with what you have, where you are. - T.R.


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 Post subject: Re: Clean Rite Purple Power and Brakleen/Lectra-Motive clean
PostPosted: Aug Sun 06, 2017 2:14 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1514
Location: Monroe, NC 28112 USA
The purple cleaners are highly caustic... NEVER use them on Bakelite or other phenol resin thermoplastics.

When I use them as degreasers and soil removers, I always follow with a zap in the ultrasonic with sodium bisulfite (dry acid) to neutralize and then a rinse in plain water.... You wind up with a residue free part.

Robert


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