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Old 22nd March 2010, 01:37 PM   #1
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Location: 3RS
Default Oscope switches giving trouble.

Can anyone suggest a reliable method to clean the range switches of an oscilloscope ( Hitachi ). I tried spraying some contact cleaner but it seemed to work only for a short while. I couldn't get directly to the switch which requires a complete removal of the front panel etc.
What is the most effective spray cleaner for these switches?

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Old 22nd March 2010, 03:40 PM   #2
SY is offline SY  United States
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Sad to say, you may have to actually get in there with solvent and swabs. And probably needle-nose pliers Spray cleaners are good for light duty, but when a switch is starting to get really dirty and the contacts are a bit loose, there's no way around the manually-intensive dis-assembly and service.
"You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
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Old 22nd March 2010, 03:50 PM   #3
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Darn, I knew it . It had to be a tough way to get it done !
I hope I don't break anything on the way in ! Such a pity. This scope didn't see too much usage either.
Thanks Sy.
I'll wait for a 'good day' before opening up the scope 'again' !
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Old 23rd March 2010, 04:21 AM   #4
Enzo is offline Enzo  United States
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And spray cleaners do work best when you actually get the cleaner to the moving parts. If you can;r get at teh switch from the easy direction, you will have to access it the hard way.

I can;t imagine why my favorite, the Deoxit, wouldn't be the best for those switches.
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