Re: That awful yellow glue on circuit boards...


"Bob Parker" <bobp.deletethis@xxxxxxxxxxxxxx> wrote in message
news:0s67l1dn640mkmk5lev44tmu66naq2mg7d@xxxxxxxxxx
> The stuff is also humidity-sensitive. The first time I ever
> encountered it was in a car radio which broke into audio oscillation
> in wet weather.
> I've seen it cause electrolysis between PCB tracks with a
> significant DC voltage difference, actually corroding right through
> them. And that was despite the fact that there was a layer of green
> solder resist between the tracks and the glue!
> You'd think that equipment manufacturers would have been fully
> aware years ago, of what that dreadful glue does as it ages. The fact
> that they still persist in using it implies that they know it's going
> to cause equipment failures a few years down the track.
>

I wonder if hot melt adhesive is a viable alternative? That's what I use
when I have to replace that awful glue and it has yet to come back to bite
me- it seems fairly neutral.

Dave


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