Raspberry PI network stability - resolved

The raspberry PI I have for the central controller of all things home was misbehaving. Once every few reboots, the network just wouldn't start.

Suspecting a power problem, I tried byuing a PS at Aliexpress that was specially desined for Raspi, quoting 2.5A on the box.

Things seemed to be OK, but no, not much stability there either. After a lot of reading logs and tried reboots, I got to this page: http://elinux.org/R-Pi_Troubleshooting#Networking - seems to be a great troubleshooting guide of all things Raspi. And every second problem there is related to power supply.

So I got suspicious, and disassembled the supply. Ha! The transformer inside is quoted at 2A, that before we mention any losses on the way. Little wonder it was browning out.

It actually looks well built, with quality components, good soldering, good mechanical design etc. But it's just too weak for its job.

So far, I connected it to some high-quality USB supply I had lying around that can do 2.1A (but this one likely really can sustain that). In the future, the plan is to connect it to a really powerful 5V supply, one that can even supply 10A if necessary. That's overkill, but then, several devices can feed off it.