trace wrinkles

[jpero at sympatico.ca]

> applied over the traces wrinkle.  The culprit usually appears to be heat.  I
> have encountered
> circuit boards where the traces will lift off of the board when
> desoldering/part removal is
> attempted.  In some cases heat may have been an issue, in others, I could

> Bill

RCA and cheap stuff are notorious for this but RCA did pretty good 
with wrinkling isssues but I had to watch the soldering temperatures 
( I set temp appox just above solder melt point like 300F-400F to 
prevent trace debonding.  I see this also big time on Tandy TRS-xx 
stuff.

Cheers, Wizard