Re: [opensuse] SSD storage and new Linux kernels [was: Re: IFUP (WAS: Re:knetworkmanager in 11)]

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On Tuesday, 2008-12-30 at 18:01 -0500, Greg Freemyer wrote:

Curiously, when I started studying electronics, there was the idea that the
transistor was much better than valves because it was ethernal (amongst
other things, of course). Now that I come to think of it, I didn't see in my
books a study of why do electronics fail, component by component. Maybe they
were learning it.


Most electronics fail because of stress on the wires inside the chips.
...
After enough flexes the wires break.

Make sense.

But there are other auxiliary components that can fail earlier, like electrolytic capacitors.

I believe that is one of the reasons the infamous freezer trick works
on malfunctioning hard drives. By freezing the drive, you compress
the plastic chips slightly and cause all the wires to make solid
connections. As the drive warms up and starts expanding the broken
wires separate again and your drive stops working again.

Interesting.

But it could also be the typical cold solder joint.

That reminds me... I have an old computer with a HD of the step motor type for the head. If I start it on winter, it fails to boot, read error. I have to wait 5..15 minutes till it warms up, and I guess, the position of the head shifts enough to match the expected position.


Military grade chips, CPUs, etc. that are worth spending extra money
on are often made with a ceramic chip enclosure. That is because
ceramic expands less due to heating.

Yes, and it is also harder.


The problem must not be as bad now as 20 years ago. Back then it was
always recommended to leave computer equipment on as much as possible
in order to extend the life of the equipment. I still tend to leave
my PCs on all the time, but I don't see that advice given in general
anymore.

Yes, I have seen that recommendation too.


FYI: I've heard that in some military tech schools they teach you how
to attempt to repair a broken chip by opening it up and replacing the
little wires if they break. Sounds like a real challenge to me, but I
can see why it would be a useful skill in some situations.

Wow. I thought they only did that on movies. :-O

- -- Cheers,
Carlos E. R.
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