Thread: Opus keeps powering the 5V molex rail even with the pc off...

Common problem. I think there are three possibilities:

1) Install an override switch to turn off battery power to opus.

2) Install a relay to turn off battery power automatically

3) I think Opus can modify the supply to turn off 5v rail.

I don't like the 5v rail staying active either...but I don't want to be without the opus whilst it is modified (its out of the case anyway) so I opted for 1). I shut off the power if I'm leaving the car for any length of time.

Originally Posted by pip

Common problem. I think there are three possibilities:

1) Install an override switch to turn off battery power to opus.

2) Install a relay to turn off battery power automatically

3) I think Opus can modify the supply to turn off 5v rail.

I don't like the 5v rail staying active either...but I don't want to be without the opus whilst it is modified (its out of the case anyway) so I opted for 1). I shut off the power if I'm leaving the car for any length of time.

Yeah, I was thinking about putting a switch in there too. What kind of switch did you go for?

I use a red guarded toggle switch. God Bless them... I dont use this exact one, but any standard double throw switch would work. My switch has a Red LED light in the head of the switch which lights up to show power is going through it......Here is a radio shack one..




EDIT: This IS the exact switch I use...hahah...couldn't see it from the angle on the website.

Tangeray

if you don't want to have to use a switch.... you can use a relay to interupt the 5v when the 12v out goes down.... keeping everything automatic like

Thanks. Any specs on the button I should use in terms of Amps?


Is this usual behaviour of the Opus? I mean keeping the 5V powered with the PSU in Idle mode? It doesn't make much sense...

it's so if you do standby it comes back without loosing the usb stuff I think...

any 12v relay should work.... you may need to group several 5v's togeather to do one relay, but this is fine as they all come from one rail anyway...

If 5V rail still power after off, something is wrong.
By ATX standard, 5VSTB still on if power is apply to the PSU. There is some mod to cut that off as well. I remember rando did or post about that mod. You can use the same idea: use relay to cut off when 12V rail goes off like turbocad6 said.

Originally Posted by MatrixPC

If 5V rail still power after off, something is wrong.

This is what I mean.
With the PC shutt down (Opus in Idle state), I measured the 5V rail from the molex, and it read 5.some Volts. This shouldn't happen...
I don't really care about the 5V STB, I didn't have a problem with 5V STB draining the battery the past year...

Why not give Opus a call/email to see what they said.
I am sure they offer to fix it for you.