orange motherboard light, power button broken

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Adam_197

Commendable
Jan 27, 2017
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I have tried to get my PC working for nearly 2 years now and everything works in the PC apart from the power. The motherboard always flashes orange whenever I switch different PSU's. The only PSU that works is the stock dell psu. I have waisted over 24 hours trying to fix this and no-one could help. I believe that it could be a power led cable issue. I have replaced all parts many times. I have waisted over 300.00 on parts that didn't help. There is an orange motherboard light but no light on the power button. I believe it could be a power button power issue but could anyone tell me how to properly configure the power button power led cables. All the parts are working; how do you turn on the PC without the power button?

My specs:
GTX 1050
VS 450
i5 2400
 
Solution
ko888
The PWRSW1 header is for the proprietary power switch and LED assembly used in the Dell Optiplex 390 SFF's case.

You would need to look at the connector in the Dell Optiplex 390 SFF's case and trace back which pins correspond to the switch and which pins correspond to the LED. Dell does not publish motherboard pinout assignment diagrams.

Dell_Optiplex_390_Power_Switch_Connector_PWRSW1.jpg
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mcnumpty23

mcnumpty23

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Jul 15, 2011
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with out a power button

you would just touch the 2 pins where the power cable goes on the motherboard with a screwdriver

thats power though

not to be confused with power led cable

ie one is for powering on the pc

the other for making the on/off button light up

assuming your pc has both cables

pled is power led

pwr is power
 
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Adam_197

Commendable
Jan 27, 2017
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1,530

Dell optiplex 390 sff. The manual does not include the front panel connections.

 
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Adam_197

Commendable
Jan 27, 2017
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1,530

I am just upgrading case and psu. When I upgraded a different PC's cpu and psu before with a dell motherboard I got it to work.
 
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mcnumpty23

mcnumpty23

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Jul 15, 2011
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yes some dells will be ok some wont

though not familiar with the one you have unfortunately

hopefully some one who knows more about dells will be able to give a clearer answer for you

 
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ko888

ko888

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Feb 18, 2009
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The PWRSW1 header is for the proprietary power switch and LED assembly used in the Dell Optiplex 390 SFF's case.

You would need to look at the connector in the Dell Optiplex 390 SFF's case and trace back which pins correspond to the switch and which pins correspond to the LED. Dell does not publish motherboard pinout assignment diagrams.

Dell_Optiplex_390_Power_Switch_Connector_PWRSW1.jpg
 
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