At 08:27 PM 12/30/2010, Old Volks Home wrote:
>my way with no further problems.  I've never opened a Bosch or TA ECU,
>so perhaps they are due for inspection sometime soon.

Just be aware most of the solder failures I've seen will not be
visible without a microscope.  By the time they get really really bad
they will, but they may very well have failed electrically - either
an intermittent or a hard failure - before then.  See
http://picasaweb.google.com/dbeierl/SolderFatigue#

I got into this stuff through an industry-magazine article around
1980 with some fascinating photomicrographs, much better than what I
have to show.  Then had some further experience later at a VDT
builder where we had some problems with thermal cycling on a video
drive transistor.

Yours,
d