Oscope switches giving trouble.

ashok · 22nd March 2010, 01:37 PM

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?

Thanks.

SY · 22nd March 2010, 03:40 PM

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.

ashok · 22nd March 2010, 03:50 PM

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' !

Enzo · 23rd March 2010, 04:21 AM

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.

22nd March 2010, 01:37 PM	#1
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	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? Thanks. __________________ AM

22nd March 2010, 03:40 PM	#2
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	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. __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache

22nd March 2010, 03:50 PM	#3
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	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' ! __________________ AM

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23rd March 2010, 04:21 AM	#4
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	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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