OT: troubleshooting steps on a custom-built PC?

[James Knott]

Lennart Sorensen wrote:

> I guess the LED doesn't mind getting 1/2 the voltage it should be.  2.5V
> is enough to light it even though it should be 5V.

LEDs are current, not voltage driven.  In fact you'll find the voltage
across one is fairly constant, over a wide range of currents.  Also, the
power supply won't deliver just 1/2 the voltage.  It will try to
maintain its rated output, if possible.

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