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Thread: PSone LCD up in smoke

  1. #1
    And then I was mod. Tidder's Avatar
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    PSone LCD up in smoke

    Ok, here's the deal. Somebody else on this board had the same idea as me, and I hope you read this before you f something up.

    I had this great idea about hooking up my PSone LCD to the PSU of my carPC. PSone takes 7.5v. So, I hooked the ground to the PSU 5v and the positive to the psu 12v. This creates a 7v circuit. But here's the bad part. It worked all fine and dandy when I was checking it inside with a PSU that I had lyin' around just to see if it would power.

    When I hooked it up in my car, I didn't realize that the screen grounded itself thru the VGA cable until it smoked. Then it dawned on me. I just hooked up 5v to ground and 12v to my screen. So I had all kinds of ****e smokin'. But, live and learn I guess.

    I'm basically posting this so anybody with this bright idea will realize, it's not all that great, unless you're tryin' to let the blue smoke out of your screen. Just remember, once you let it out, you can't get it back in.
    Tidder

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  2. #2
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    I was thinking of hooking it up the same way so how would I correctly hook it?

  3. #3
    And then I was mod. Tidder's Avatar
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    Get an automotive power adapter for PSone, MAKE SURE IT's SONY BRAND! Then cut it up and hook it to your CarPC's PSU 12v and ground. That's the only way. Or get DC to AC inverter, and just use the power adapter that came with your PSone. It's cheaper to just use the automotive one though. I had mine set up like this for a while, until the adapter stopped working. It was $5 w/shipping from Ebay. Sony branded adapter is about $20. I thought I was saving, but no, it only lasted about 4 months.
    Tidder

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    So if I were to chop off the end of the cig adapter I would wire it to the yellow, +12, and 1st black, Ground for 12 volts, of a molex connector? Perhaps this is a silly question, but how will I know which wire is positive and negative after lopping of the cig adapter?

  5. #5
    And then I was mod. Tidder's Avatar
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    On the cigarette adapter, the tip is positive and the barrel is ground. So just go off of that.

    Other than that, yes, you are correct on that wiring.
    Tidder

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  6. #6
    And then I was mod. Tidder's Avatar
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    Quote Originally Posted by ToMMyKiSS
    we dont need no water let the motha burn burn burn motha burn
    Oh my god it's on fire... Then I pulled the plug, and that's the way it was.
    Tidder

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  7. #7
    Maximum Bitrate pRoFiT's Avatar
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    You could build a 7 volt power inverter. Or use a lm7808 to get 8 volts. Shouldn't be that bad to run 8 volts to a 7 volt device. Although the LM7808 cant handle more then one amp. Anyone now what the current draw is from the psone screen?
    Um, I guess this is where you put something witty.WITTY

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  8. #8
    Raw Wave Rob Withey's Avatar
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    I'm pretty sure I got the current draw below 1A by gutting the bits I didn't need : psone LCD > VGA question

    Think it was about 800mA.
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