Well, I connected the 19V to the Vin a few days back, and that seems to work fine. The problem with connecting to the 12V side of the linear regulator is that the regulators are not designed for that, and you leak 5V to the 12V fan, which might turn then.
I've moved my machine and I'm now unable to test with USB right now. (but the noise is gone from my living room )
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jelleatprotospace 0
Why would making 5V from 12V be a problem? So why would it be a problem when linear regulators are used? A simple connection from the 12V regulator output to Vin on the main board suffices.
No fans turning when you connect the USB, nor is it trying to power a 40Watt machine from a 2.5Watt connection.
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