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How should I diagnose this hardware issue?

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4wd:
It really is strange that you have such a adverse reaction to a common industry standard practice which is even recommended on some memory manufacturers support forums (one would thing they'd know better).-Stoic Joker (September 16, 2009, 08:53 AM)
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I don't have an adverse reaction - I just pointed out that some pencil erasers can leave a residue and it's something I wouldn't do - so I gave a couple of  alternatives.

TBH, these days I use the most simple form of cleaner you can get...a clean sheet of A4 printer paper.  I use it for contacts because it's abrasive enough to remove most contaminants without being so abrasive that it causes undue contact wear, (eg. I also use it for cleaning the heads on my video recorders).

Regarding the gold contacts, yes I realise they are not pure gold but I can also say that any problems I've had regarding gold contacts have been purely the fault of the connectors they were incorporated into, eg. manufacturing flaws creating insufficient contact tension or damage to the connector/contact.  Of course, YMMV.

But, all that aside, I'm sorry if it looked like I was trying to demean or nullify your suggestions in any way - I too have found your posts informative.

Addendum: I just thought I'd add this so you can see where I'm coming from: Removing Tarnish from PCB Pads, Holes, Contacts, and Connectors
Please bear in mind that it's referring specifically to the end point of soldering the cleaned area - running your stick of RAM, etc under a tap to remove the microscopic detritus left by using the eraser probably isn't a good idea, (IMHO, neither is blowing it unless you're using a clean, dry air supply).

So, yes the eraser is quick, easy, millions of techs all over the planet use it - I just said I wouldn't use it because of the crap some leave behind.

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