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Thread: VGA cable shorting PC?

  1. #11
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    It does it even when the truck is running.

    Based on my specs the OPUS 360W should be able to put out more than enough power, especially since the monitor is 9W and I unplugged 10W worth of USB devices alone when I was troubleshooting but I'll give it a shot right now and see what happens.
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  2. #12
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    Well, I tested it with the cigarette lighter and it works. I guess that's good and bad news. Why wouldn't my PSU be good enough to start up the monitor?
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  3. #13
    FLAC SNOtwistR's Avatar
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    maybe its not playing nice with your mainboards power switch wires to power supply or however you have it wired, i just ran a separate switch to my mainboard. mine is a manual system. i keep forgetting to mention i have 07 150, and where in bc you at? SNO

  4. #14
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    Kamloops.

    This is getting absurd. I noticed I get the 3 flashes on my OPUS when the monitor is connected which means that I'm trying to draw more power than the OPUS can output. I don't understand this at all because on the 12V rail I'm only drawing about 5.5 amps and the 360W is supposed to max 15A
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  5. #15
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    The cigarette lighter power adapter that came with my touchscreen has a "power filter" on it. Is that the equivalent as regulated power? If it is I'm just going to tap into the cigarette lighter, if not I really want to figure out what the problem with this PSU is.
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  6. #16
    MySQL Error soundman98's Avatar
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    it is not equivelent to regulated power, but will filter out most of the problematic voltage that might mess up the screen picture.

  7. #17
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    Well it would appear as though it doesn't matter anyways because now when I have my monitor connected to the cigarette lighter it blows the fuse. 0.75A worth of current blowing a 20A fuse. AHHHHHHH!!!
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  8. #18
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    Your LCD is probably grabbin a bit more than 0.75A then if it's blowin the fuse. I feel like the lighter should have more than 1A spare. Also, plugging in a monitor (12v) that draws 9watts is NOT a good comparison to "several USB devices" (5v) and 10watts. They draw power from different lines. Each line has a maximum. I bet your 12v line is maxed out and your LCD is drawing more amperage than it claims to turn on.

  9. #19
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    Ya, I realised that after I posted.

    The only 12V devices I have are my CPU which is 45W (3.75A), Mitch's Sirius box which is 12W (1A) and the touchscreen which claims to be "<9W" so ~0.75A and whatever the HDD uses. Everything else is 5V USB devices. That is a total of 5.5A. The 360W PSU is supposed to be able to handle 15A*12V = 180W.

    Even if the touchscreen requires more power to initially start up, it wouldn't be that much more.
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  10. #20
    Vendor - Qube colin's Avatar
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    Perhaps your power supply is defective? Or extremely over rated? The HD usually grabs around 1A at 12v and 1A at 5v to spin up. That's now 6.5A. And the 15A, thats probably a fuse rating, so that's minus inefficiencies. I'd vote defective if it can't put out 10A.

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