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Thread: Think this Opus 90W is dead?

  1. #1
    Constant Bitrate ZenerDiode's Avatar
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    Think this Opus 90W is dead?

    I got it used off the classifieds here. I've not even using the auto-on function now...I have a power switch hooked up to the motherboard. I've tested the system with a normal AC PS and everything works fine...but with the opus, all I get is a constant flashing green LED. computer does nothing. I'm pretty sure the wiring is right.

    red --> car 12V
    black --> car chassis ground
    yellow --> amp trigger

    any clues?

    btw, I have an EPIA M and I have set the bios to "Turn On after Power Loss". But that shouldn't matter, I'm just using an ordinary power switch fo now.

  2. #2
    FLAC Chairboy's Avatar
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    I had the same problem, it turns out that the polarity of the jumper wire (the one that emulates the power switch) is important. Try turning it around on your motherboard. I know it sounds silly (a jumper is a jumper, right?) but apparently the Opus uses voltage from one of the pins as part of its error checking.

  3. #3
    Constant Bitrate leenas's Avatar
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    The green wire of the two wires (green and white) should be facing the back of the mobo where all the connections are (such as vga ps/2 usb etc).

  4. #4
    Constant Bitrate ZenerDiode's Avatar
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    Quote Originally Posted by Chairboy
    I had the same problem, it turns out that the polarity of the jumper wire (the one that emulates the power switch) is important. Try turning it around on your motherboard. I know it sounds silly (a jumper is a jumper, right?) but apparently the Opus uses voltage from one of the pins as part of its error checking.
    yeah, i knew about the polarity issue...but the thing is...right now, I'm using a plain ole power switch for manually turning the computer on and off.

  5. #5
    Raw Wave Laidback's Avatar
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    Quote Originally Posted by Chairboy
    but apparently the Opus uses voltage from one of the pins as part of its error checking.

  6. #6
    FLAC Chairboy's Avatar
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    Er, unless you're using the remote activation, I don't think what you're doing will work. The Opus doesn't sit there providing full available power, as far as I know, it needs to say 'turn on' so it can handshake, then provide the power.

    It needs to talk to the motherboard over the wires that go to the jumpers. When I had them reversed, I had the same problem (blinking light, nothing happening) because it needed to say 'hey buddy, you ok?' to my Epia before it would provide power. Since you bypassed that, it ain't gonna work.

  7. #7
    Constant Bitrate ZenerDiode's Avatar
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    ah...i understand now. I was trying to be all smart and bypass the auto-on feature so I could verify the system was kosher before hooking everything up. durh...turns out I'm a dumb@ss...
    \
    btw chairboy...I love that avatar. that's a crazy pipercub right?

  8. #8
    FLAC Chairboy's Avatar
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    Glad to help! Yeah, it's a Piper cub with some performance mods.

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