Question about EPoX EP-8KHA+ Motherboard

1 Answer

Connecting to -5V

I had to change the ATX 20-pin contact on my EP-8KHA motherboard, but I'm afraid I managed to damage one of the connecting points. As far as I can tell, the -5V is not connected to the circuits on the board any longer. Could someone please guide me to another point that is electrically the same as where the -5V pin of the 20-pin contact should be connected? (Then I can connect the -5V pin to that point using a cable.)

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  • MickeP Mar 19, 2008

    The help I need has to be from someone who knows the specific board.

    The solution suggested is not viable since it's a multi-layer circuit board, and the connection to that specific pin is not visible.

    So, once again:

    Does anyone know (and like to share it with me) of any other point on the motherboard EP-8KHA that is equivalent to the point where the -5V pin should be connected?

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  • Master
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You will just have to follow the track from pin 18 on the connector to the next solderable point on the board.

Posted on Mar 19, 2008

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1 Answer

Can I tap a -5v into a BESTEC atx-250-12z-rev d2 power supply ?


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Output Max. Load +5Vsb 2A -12V 0.3A +12V 13A +5V 30A -5V 0.3A +3.3V 20A Pin 18 out of 20 white -5 volts (optional)
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  • Check the voltage on the Power supply. (5V STB is on pin no. 9).
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  • Check the voltages on the Front Panel connector for 3.3v, 5v and ground.
  • Check for shorting by placing one probe of multimeter on the ground and the other one by one in pin no. 1,2, 4, 6, 8,9,10,11,12,14,19,20 also on the CPU connector. If there is shorting the problem is with some component on the motherboard.
I think probably the Power Supply (SMPS) is faulty.

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Black=0V(GND)
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Looks like it comes with a 550w power supply, so anything in that range would be fine. Below are the specifics if you need them.
Best of luck, William
-------- " Replacement power supply for Compaq Presario SR2020NX- 550 Watt Replacement Power Supply Upgrade
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- Four (4) large molex connector (4-pin)
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Pins 1-4 and 10- 13 are USB connectors
USB USB
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3 data+ 12 data+
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Pin description
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Pin description
7 Ground
8 Reserved
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17 IR in
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