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Thread: Noob with power supply/bench testing question

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    Noob with power supply/bench testing question

    I recently purchased a car pc setup that has supposedly has an Opus 150W power supply. From what I've read on here it looks like a 120W supply. I assumed I could buy a 13.8VDC 3-Amp Power Supply from Radio Shack, hook it up and it would work. There are three wire coming from the Opus, red, yellow and black. I hooked up the red and black and turned on the power supply and nothing. Am I doing something wrong? Should the yellow wire be attached as well. Again I am very new to car computing so any help would be greatly appreciated. Here's a pic of the box:Name:  carpc.jpg
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    Yellow goes to the accessory wire on the car. It tells the Opus to turn on when the car turns on and off when the car turns off.

    If you want to test the setup, then reconnect the black and red to - and + and then supply 12v to the yellow wire. If you have connected everything inside the computer properly (including the ACPI jumper) it should power on.
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

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    Thanks for the reply Bugbyte. I'm looking to power up the pc in my house first. I just got it and want to get everything configured properly before I start the install in my car.

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    Did some more research and it appears to not be as easy as I thought it was. Sorry. Did I mention I was a noob?

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    Quote Originally Posted by seanmac478 View Post
    Did some more research and it appears to not be as easy as I thought it was. Sorry. Did I mention I was a noob?

    actually, it is pretty easy-- even if you don't have any parts--get your self a computer power supply(most start at about $25) and then just use this guide:
    http://www.mp3car.com/vbulletin/advf...iew&advfaqid=4

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    To get this working in your home, just connect the red and yellow wire to the +wire comming out of your Amp power supply and black to black. This should turn it right on.

    In your car, the yellow wire connects to the ACC wire (usually yellow with red stripe). Red wire connects directly to your battery (with a fuse), and the black wire can be grounded to the chassis of your car. No need to run a ground wire all the way back to the battery.

    Hope this helps.
    -Troy

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    I use a Radio Shack 10 amp DC power supply for bench testing. Connect both red and yellow to the + and the black to the - and it should start if connected properly.

    If you have an ATX powersupply you can connect it instead of the M2. I like to use the DC power supply because you can test everything before putting it in the car.
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

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    OK, so I'm not as dumb as I thought. I tried connecting both yellow and red to the + and the black to the - and nothing. So it's probably not hooked up properly inside the box. Thanks!

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    You remembered to connect the ACPI wire, right? You can temporarily start it by shorting the two pins with a paperclip.

    Do this only if you are sure which pins they are. I am not responsible if you short something and kill the mobo.
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

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    OK, so I'm not as dumb as I thought. I tried connecting both yellow and red to the + and the black to the - and nothing. So it's probably not hooked up properly inside the box. Thanks!
    Yeah, not only does your motherboard need power, it needs a signal to turn on and off. There will be a small pair of wires (usually red and white) that connects to 2 pins on the motherboard where the power switch usually hooks up. On most boards, the layout of these wires are painted on the board itself making it easy to see where to plug this up.

    Looks something like this:

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