AmigaOne Power Setting

[Staticman]

Whenever I disconnect my mains power lead from my AmigaOne, even when the power button is switched 'OFF' when i reconnect the mains power lead to the psu the thing fires up! A damn site annoying and not safe for me or the computer.

Any ideas on how to adjust this setting and solve this relatively minor problem would be greatly appreciated.

Thanks.

[Madgun68]

It's probably the power supply that's doing it and not the machine. My PC does the same thing. Annoying, but nothing I can do about it. (The other ATX machines around here don't do it.)

[Gaidheal]

OK, a few things...

Which power button?  On the machine?  Or the PSU itself?

If the latter, it ought not to power up the machine when switched off.  If the former, it's not a switch just a toggle and the sudden reconnection of power will cause enough current to flow in the right places, for long enough, to be interpretted as the "power up" signal with many ATX PSUs.

You ough not to be connecting a live lead to the PSU anyway.. should be plugging the lead into the PSU and THEN plugging it into the wall socket/supply board.  The socket should be OFF if it is one that's switched (crappy US ones typically are not, but in UK make sure the socket is off) only then should you turn on the socket.

To clarify, the order is:

1. Plug otherwise unconnected lead into PSU.

2. Plug lead into wall socket, supply board, etc with socket OFF if there is a switch.

3. Turn socket ON if there is a switch.

You risk a spike otherwise, I have several times (because I was lazy) tripped the ELCB in my house by not bothering to follow my own advice.. potentially I might have sent a reasonably large spike through my hardware each time.  Your call...

[Floid]

This is probably a one-off thing with your particular supply; what's worse are the ones that don't always want to turn *on.*

However, it's also a programmable feature on many x86 boards, either via jumper or BIOS - "Power on after interrupt?" or somesuch option.  It comes in handy for embedded appliances and non-UPS-backed servers -- you don't want those sitting idle; back in the old days, you'd just leave the power switch "on" and there was nothing more to it.

It's possible that, given the 'server' intentions of the original Teron designs, the A1 is designed to do this, and/or there *is* a jumper to set somewhere.  Read the manual, ask Eyetech?

Simple solution is to put up with it once, and leave it plugged into the wall, as it should be.  Now that we have ATX supplies, and monitors that go to 'sleep' without signal, there's no reason to be flipping switches on a power strip.  A properly designed monitor and turned-off ATX computer (with the small amount of current still trickling to allow things like Wake-on-Lan, and the power switch itself to work) shouldn't draw more current than the average nightlight.