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gghe...@gmail.com> wrote in message
news:74505f62-dfcc-44f8...@googlegroups.com...
> On Saturday, April 30, 2016 at 2:00:53 PM UTC-4, Jon Elson wrote:
>> Ralph Mowery wrote:
>>
>>
>> > As it is just for my own use at home I am not worried about the legal
>> > Rohs part.
>> OK, just for your own use, you can do repairs with PbSn solder on
>> assemblies
>> made originally with Pb free. I do this all the time, never had a
>> problem.
>
> Me too, the amalgamate talk makes me wonder though.
Reworking lead free with 60/40 sometimes gives a grainy finish that looks
even more dodgy than the original lead free.
When I was in TV repair, most Asian manufacturers had converted before most
people in the UK had even heard of RoHS. (but it took the Asian
manufacturers a lot longer to get it right).
My introduction to lead free solder was a steady stream of TVs with bizzare
random faults that defied any attempt at logical diagnosis - going over the
soldering fixed them as if by magic.
With Hitachi sets; you could push down on a component and the whole solder
fillet would detach from the other side, that revealed a thin black layer of
oxide on the copper.
On Sony sets; the solder looked as good as lead free ever can - but going
over the soldering fixed over 90% of all faults.
During that time I routinely used 60/40 - I didn't get many bounced repairs,
and not many of those had anything to do with solder.