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Thread: Spark and now what?

  1. #1
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    Spark and now what?

    Hello,
    i was installing carputer to my car. I have to move the stock lcd (which reads the radio and climite tempetures) to the lower console. after extending all the wires i was getting ready to test it. here is the problem i accidently drop the lcd screen and it touches the metal frame of the car. i heard a small spark sound and now the lcd doesn't work. Later on i realized that my remote alarm doesn't work.

    My question is what might have been burn other than the lcd circuit board?
    could it simplely be blown fuse or burned resistor on the PCB?
    I know which part of the circuit board touched the metal frame, could it be just that cap that's burn up?

    any help will be greatful
    thanks all

  2. #2
    Raw Wave Rob Withey's Avatar
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    Quote Originally Posted by starcnc View Post
    could it simplely be blown fuse or burned resistor on the PCB?
    Yep, could be.
    Quote Originally Posted by starcnc View Post
    I know which part of the circuit board touched the metal frame, could it be just that cap that's burn up?
    Yep, could be that too.

    However, it is rare for resistors and caps to "burn up". Most likely is a fuse. Or it could be a diode, or transistor, or integrated circuit or other semiconductor. In fact it could be any one or more of many things.

    What it actually is might be something else, and unlikely to be guessable by us based on a few vague details. Get your multimeter out and start diagnosing.
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

  3. #3
    FLAC Nomader's Avatar
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    Start by checking your fuses

  4. #4
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    If it's a back-lit lcd you could've blown the inverter...not speaking from experience, of course.

    Not sure how that would relate to the remote alarm though.

  5. #5
    Variable Bitrate
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    check the easy stuff first.
    Make sure all the fuse on your car is good.
    dsatx in voompc 2 case <HERE>

  6. #6
    Raw Wave Rob Withey's Avatar
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    Quote Originally Posted by Rob Withey View Post
    Most likely is a fuse.
    Quote Originally Posted by Nomader View Post
    Start by checking your fuses
    Quote Originally Posted by skuller View Post
    check the easy stuff first.
    Make sure all the fuse on your car is good.
    3 times the same advice - must be true.
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

  7. #7
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    thanks all, it is the fuse. i couldn't smell any burns on PCB so i thought to my self it has to be something else, but i was sure.

    again thanks

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