[Shop-talk] Craftsman Garage door opener Failure

[John Innis]

Actually I'm going to disagree with you on that basic engineering rule.
Mechanical security is exactly what solder is for.  It is a lousy
conductor.  It is true that large and heavy components should have
additional mechanical support, especially when used in an application
 that is subject to vibration or shock.  But for small through-hole and
surface mount components, solder is more than adequate.


On Thu, Jun 6, 2013 at 1:06 AM, Wayne <wmc_st at xxiii.com> wrote:

> On 6/6/2013 12:13 AM, Jack Brooks wrote:
>
>> Craftsman is made by Chamberlain.  They also make Lift-master, so this
>> same
>> issue could affect any of these brands or another brand.  It was just so
>>
>
> I have a Lift-Master with a 1999 build code in my place. It failed maybe 6
> years ago, and after not being able to see anything defective on the
> printed circuit, I grabbed the soldering gear and "re-flowed" or fully
> re-soldered the whole board. Voila! It worked. Chamberlain broke a real
> basic engineering rule: Do NOT use solder to mechanically secure components
> to PCBs. I also glued all the offending big pieces down with - forget
> exactly - sillycone or hot glue or similar. Better engineering would have
> done that in the first place, or potted it, or put a ty-wrap in, or some
> bracket.
>
> -w
>
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