En el artículo , Chris B.
escribió:

So presumably the cap failed and caused the resistor to char.

Yes. It's fairly unusual for that type to fail, but not unknown.

Here's
the thing - the main board power schematic shows 25 or 30 of these
things. The processor board has 20 or so more. Are these things
failure prone

no

or is the fact that these components were covered and
maybe got a little hotter than others likely to be a factor?

no

I'm not
going to replace anything other than these two for now

That's fine. Don't worry about the others

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