AVR-Chat

On Fri, 4 Feb 2005, Stefan Trethan wrote:

> 
> On Fri, 4 Feb 2005 08:26:43 -0300, Javier Fiasche <jfiasche@tutopia.com>  
> wrote:
> 
> Visual inspection of each PCB is a good idea, especially in areas where  
> there will be no access later. Electrical testing is too much effort for  
> me. You can never be 100% sure there are no breaks, no matter if you have  
> your boards made or make them yourself. inspecting against a bright light  
> source shows some faults you don't see normally (but it only works if  
> there is no copper on the other side, on that spot), it also shows holes  
> which are not drilled.
> 

If you make your own boards, as I do, then it's easy to inspect them and 
repair any faults in the pattern before mounting parts.  But if you buy a 
populated board with TQFP parts already on it, it becomes more difficult.

I usually check some of the patterns with an ohmmeter on boards I make 
myself, especially those under multi-pin SMD parts that I am not going to 
want to remove after putting them on the board. Sometimes one little 
scratch goes all the way through the copper but is difficult to detect 
visually.

Zack