Re: Lead-free Solder ( continued ... )

I see it as another example of well-meaning people effecting change about
that which they know not. The consequence is that a few people feel they
have saved the world, and everyone else suffers. Mr. Common Sense has once
again died and gone to hell.

WT

"Arfa Daily" <arfa.daily@xxxxxxxxxxxx> wrote in message
news:0HuMh.16590$0Z1.2563@xxxxxxxxxxxxxxxxxxxxxxx
Hi all

Friend of mine also in the electronic service business just called me to
tell of a conversation he had in the pub last night with one of his
friends. Turns out this guy is a washing machine service engineer with his
own business of many years. He told my friend that from a business point
of view, he is delighted with lead-free solder, because in the last year
or so it has boosted his profits significantly. This is because of the
number of bad joints that he now sees on items such as solenoids. He is
firmly convinced that the lead-free solder, being a harder material that
doesn't stick well in the first place to items with a large thermal
inertia, cannot take the vibration that a washing machine subjects it to.
This seems altogether reasonable to me.

Just this morning, I have repaired a NAD CD player that would play for
anything between 5 and 45 minutes, before randomly failing. No amount of
physical provocation would bring on the fault, nor correct it when it
occured. It would need to be left off for about a half hour before it
would play again. Just for sport, I tried a laser, but of course, that
wasn't it. I then took the board out, and went over it with a headband
magnifier. I then found two perfect cracked-right-round joints on a
connector. The joints had that traditional lead-free straight-sided
volcano like shape. Once these had been attended to, and the original
laser put back in, everything was fine.

Is it just me, or does anyone else have concerns for the wider
implications of this nonsense technology that has replaced a mature and
reliable technology in the dubious name of that new great ( and some would
say false ... ) god, "Green" ? If washing machines can vibrate these
joints into submission, I sincerely hope that the exemptions that the
avionics and automotive electronics industries currently enjoy, never get
rescinded ...

Arfa



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