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Thread: Another weird M1-ATX issue

  1. #1
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    Another weird M1-ATX issue

    OK, here's the background:

    M1-ATX hooked up to an M10000, worked fine for a year. The other day I was messing with my touchscreen while the computer was on. I unplugged the power cable and accidently tapped it several times re-connecting it and unconnecting it repeadetly. The speakers thumped several times and the computer shutdown.

    I couldn't get the computer to start again so I hooked up to a standard PSU inside and it booted right up.

    Back out in the car I plugged just the MB in and it won't start. I have a fan on the back of my TS that I plugged into the MB and the fan started right up.

    Any ideas what I blew/screwed up? I know it's not the little 10A fuse because I tried to switch that already....
    7 inch Lilli TS in dash, Epia M10000, 200GB HD, 512MB Ram, USB WIFI, DVD/CD-RW, GPS

  2. #2
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    Anyone? It really sucks not having a CarPC...
    7 inch Lilli TS in dash, Epia M10000, 200GB HD, 512MB Ram, USB WIFI, DVD/CD-RW, GPS

  3. #3
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    i just blew the Q2 chip... check that... if you've blown it you can either change it yourself (part number is FDS9435A, and you can get it from mouser.com), or you get a new power supply... its up in the corner next to the big plug (i don't know the technical words for this stuff)

  4. #4
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    Is it pretty obvious when it's blown? How exactly do you check it?
    7 inch Lilli TS in dash, Epia M10000, 200GB HD, 512MB Ram, USB WIFI, DVD/CD-RW, GPS

  5. #5
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    well mine wasnt heaps obvious... it just looks like its slightly melted on the top, and theres a distinct hole in it that shouldnt be there... however ive seen pics of people who have got totally fried ones... if its gone it should look different to the rest of the chips on the board...

  6. #6
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    Quote Originally Posted by sorensilk
    Is it pretty obvious when it's blown? How exactly do you check it?
    I was having the same problems, and glad I found this post.

    I grabbed a flashlight, and sure enough... looks like I fried my Q2 chip. I'll probably just order another M1-ATX, as I haven't any idea how to replace this chip. But... here's what it looks like:


  7. #7
    Constant Bitrate
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    Closest match I could find on Farnell was part number #707211.

    Manufacturer: Fairchild Semiconductor
    Part number: NDS9435A
    Description: Single P-Channel Enhancement Mode Field Effect Transistor
    Package: SO-8

    Hope that helps somebody out there.

  8. #8
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    I never could find what was wrong with mine, maybe nothing...I didn't want to be out of a CarPC too long so I just ordered another one. I'm planning on selling the old one and maybe someone else can figure it out. I know computers pretty well but electronics I just can't do.
    7 inch Lilli TS in dash, Epia M10000, 200GB HD, 512MB Ram, USB WIFI, DVD/CD-RW, GPS

  9. #9
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    i just changed my Q2 chip... it booted for about 5 seconds, and then shut off... it did this a couple more times, now it wont boot at all!!

    anyone helP!?!

  10. #10
    Constant Bitrate
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    Go back to basics.

    Remove the jumpers and use it as a dumb PSU. Hook it up to a 12v source on the bench and the mainboard with no accessories.

    Does it boot?

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