[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference hips::uk_audioo

Title:You get surface noise in real life too
Notice:Let's be conformist
Moderator:GOVT02::BARKER
Created:Thu Jul 28 1988
Last Modified:Mon Jun 02 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:550
Total number of notes:3847

180.0. "Plug & Socket cleaner" by TRUCKS::WINWOOD (Balanced diet, a pint in each hand) Thu Jun 07 1990 14:56

    Does anyone have a recommendation for contact cleaner? Ideally in
    a spray form for cleaning connectors, plugs and sockets and so on.
    
    I used to use 'Colclene' but since it is pure CFC I am a little
    disinclined to continue. The noters in DSSDEV::AUDIO advocate
    something called 'Cramolin', is this available in the UK under
    another name?
    Calvin
    
T.RTitleUserPersonal
Name
DateLines
180.1Ozone-friendly audio...?BAHTAT::SALLITTDave @RKG, 831-3117Thu Jun 07 1990 17:4718
    Cramolin can be sourced in the UK via Russ Andrews Components. I don't
    know the address/phone no., but it's somewhere in the Lake District. If
    I can find it at home tonight I'll enter it tomorrow.
    
    Cramolin's fairly expensive, as I recall. Some amp manufacturers (Naim,
    for one) say avoid it, and anything like it, like the plague, as it
    leaves a deposit that's hard to remove; they recommend instead just
    periodic removal and re-insertion of interconnects. On the other hand,
    as you rightly point out, many people in DSSDEV::AUDIO have lots of
    success with it. Maybe it depends on how it's used.
    
    Personally I use the the removal/re-insert method on DIN or XLR
    connectors, isoprop alcohol (�1 for 10ml in Boots) on phonos, and
    T-Cut/Brasso followed by isoprop alcohol on mains and speaker plugs.
    That doesn't mean I don't approve of Cramolin et al, I'm just too
    lazy/tight-fisted to take the trouble!
    
    Dave
180.2IPA is the answer.TRUCKS::WINWOODAll changeWed Jun 13 1990 12:485
    Sounds as though I.P.A. is the thing to use. I've used it on
    disk drive heads with success. The only drawback being the
    time taken to dry, but then perhaps I am unfairly comparing
    it with Freon. Thanks for the help.
    Calvin
180.3GRAMPS::WCLARKWalt ClarkTue Aug 14 1990 23:1932
    I dont get in here very much, so this is a late reply.
    
    I very much like Cramolin as a contact treatment system.
    It leaves behind a low mechanical resistance, non-conductive
    film which also acts a bit like a lubricant. The film also
    is self healing so once a contact is engaged or broken the
    film covers back over any exposed conductor, protecting it
    from oxidization.
    
    I do recommend that it be used in a solution not to exceed
    15% Cramolin with a carrier such as freon TF.  I use a 5% solution
    myself.  If you use too much Cramolin in a small area it tends to
    get sticky (the 5% solution helps keep the residual down to
    a nearly ideal single molecule film). If it does get gooey
    on a contact, flushing with TF will remove the excess, and
    any dirt trapped in the Cramolin.
    
    Because it seals the contact against additional oxidation,
    it is better than just a cleaner. Because it has a very low
    mechanical resistance (the film separates easily to permit
    metal-metal contact) and because it migrates it is better
    than cleaners with teflon or silicon lube.
    
    I have found it is harmless to components, in fact I coat my
    copper circuit boards with it and they to not tarnish even
    with no tin plating (and the stuff "heals" after soldering).
    
    It is expensive, but it goes a long way (when properly diluted).
    It also restores those noisy volume and balance controls on
    older equipment, which can save the price of the Cramolin.
    
    Walt