adam Seychell wrote:
>
> ghidera2000 wrote:
>
>>The traces look good though. The dielectric seems to have held up, no
>>evidence of burning etc. Just for the hell of it, I'm going to see if
>>I can clean this up and replace the ICs to see if I can get it
>>working again.
>>
>>Question is, Whats a good method of drying out the board after
>>cleaning? I'll go at it with distilled water and a soft brush, then
>>some contact cleaner but I'm worried about water trapped in little
>>nooks and crannies.
>
>
> Its pointless applying cleaner AFTER rinsing with distilled water. Cleaner
> residue is the killer so you want to rinse with water last. If you have copper
> oxides I'd first scrub the board with vinegar, then do what Tom suggested.
> I think sodium hydroxide (a main ingredient in dishwashing detergent) will
> dissolve the white powdery tin(IV) oxides that may have formed on some tin
> plated component leads. Rinse under running tap, shake it dry, then get spray
> bottle with distilled water or alcohol and rinse the board with it. That way no
> residue should remain once dried.
There's an electronics detergent called 'safewash 2000' that makes soldering
really shiny, removes flux, and other residue. RS Components or Farnell have
it. Just scrub the pcb with it and some warm water using an old tooth brush.