MOTM

On 25 Dec 2010, at 18:38, jwbarlow@... wrote:

> What I would suggest (ROHS or not) would be to take an old (ie, not  
> used for anything other than electronics) sponge (or rag) and some  
> powdered cleanser (eg: Ajax) and water, and give the boards a little  
> scrub to brighten up the copper and remove any tarnish/oxidization.
>
> Am I wrong to do this?

Fine if they are simple copper etched PCB's. However most people will  
have PCB's made by commercial board houses which have pre tinned pads  
and are solder masked and silk screened, you would be advised not to  
use abrasives on them. ROHS only applies to the
tinned coating, not bare copper.

Graham