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Subject:
Re: Detection of potential cracked capacitors and resistors
From:
Jim West <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Jim West <[log in to unmask]>
Date:
Mon, 9 Mar 2009 21:53:06 -0400
Content-Type:
text/plain
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text/plain (102 lines) 
Thanks Dwight,

Interesting, do you know anyone that offers this solution (i.e. test labs, 
or other testing facilities)?

Thanks,
Jim


----- Original Message ----- 
From: "Dwight Mattix" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, March 09, 2009 9:27 PM
Subject: Re: [TN] Detection of potential cracked capacitors and resistors


> IR comparison to known good assembly.
>
> At 05:56 PM 3/9/2009, Chris Mahanna wrote:
>>Jim,
>>I would suggest, and we offer a 3-way approach:
>>acoustics
>>elevated T/H
>>microsections
>>
>>Chris
>>
>>-----Original Message-----
>>From: TechNet [mailto:[log in to unmask]] On Behalf Of Jim West
>>Sent: Monday, March 09, 2009 7:29 PM
>>To: [log in to unmask]
>>Subject: [TN] Detection of potential cracked capacitors and resistors
>>
>>Looking for a quick/easy way (if this is even possible), to verify if
>>ceramic capacitors and/or resistors placed on a PCA are cracked.
>>
>>Can an X-ray be used to check for cracked capacitors and resistors?
>>
>>We had an issue with hand soldering of other components that compromised
>>the PCA and could possibly lead to cracked components.  If X-ray cannot
>>detect the cracks, are they other methods of inspecting for cracked
>>components that you guys can think of?  Besides electrical test (PCA's 
>>will
>>not fit in electrical test fixture now due to hand mounted components).
>>
>>Thanks,
>>Jim
>>
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