Cooler Master H500M front panel I/O not working

[Dr. Prop]

I am trying to connect my case's front panel power button and other front panel I/O to my motherboard. See this page for a picture of what I/O exists on my case: http://www.coolermaster.com/case/mid-tower/mastercase-h500m/

See page 22 of the manual for all information about the front I/O connectors that exists in the case manual.

 

See page 1-21 of my motherboard manual: http://dlcdnet.asus.com/pub/ASUS/mb/LGA1151/ROG_MAXIMUS_X_FORMULA/E13427_ROG_MAXIMUS_X_FORMULA_UM_WEB.pdf?_ga=2.146811831.1486131050.1533935187-553127753.1531639343 for where the front panel I/O is supposed to go.

 

I have hooked up the power switch, power led, and activity led as shown below, and attached that connector to the bottom right header of my motherboard.

 

 

This results in a non-functional power switch. I suspected that I also needed to attach the reset button, so I went hunting for that cable, and it turns out it is attached to a separate pcb on the back left of my case. see next pic: 

 

Since my motherboard seems to want the "RESET SW" plugged directly into my motherboard, but the case and the manual have the reset switch plugged into this pcb, where should the reset switch actually be plugged in and how do I get my power button working?

 

 

[kb5zue]

Right off the bat, I can see in the first pic that the PLED+ and PLED- are backwards.  As for the power switch, never heard of a reset switch plugging into a separate PCB so I would try plugging the reset switch into the mobo.  You have nothing to loose.  The reset switch is actually not a "switch" but just a momentary contact button.  Also, in the first pic, what are the two wires connected underneath the PLED+ and PLED- wires?

[Snotrap]

4 minutes ago, kb5zue said:

Right off the bat, I can see in the first pic that the PLED+ and PLED- are backwards.  As for the power switch, never heard of a reset switch plugging into a separate PCB so I would try plugging the reset switch into the mobo.  You have nothing to loose.  The reset switch is actually not a "switch" but just a momentary contact button.  Also, in the first pic, what are the two wires connected underneath the PLED+ and PLED- wires?

The power is also flipped but that shouldn't matter. Are the headers matching up with the connectors on your motherboard?

[kb5zue]

5 minutes ago, kb5zue said:

Right off the bat, I can see in the first pic that the PLED+ and PLED- are backwards.  As for the power switch, never heard of a reset switch plugging into a separate PCB so I would try plugging the reset switch into the mobo.  You have nothing to loose.  The reset switch is actually not a "switch" but just a momentary contact button.  Also, in the first pic, what are the two wires connected underneath the PLED+ and PLED- wires?

Ha, found the location for the reset button.  It is the two contacts under the power button.  Check out the pic in your manual on page 1-21.  It shows you where they go.

 

[kb5zue]

The direction of the power button won't matter because it is just a momentary contact but for the PLED contacts, they do matter because if they are incorrect like shown in the first pic, it won't work.  The Light-Emitting Diode that is the PLED is a diode and current only flows in one direction with a diode.  It prevents current from flowing in the wrong direction so if the contact is backwards, the PLED won't come on.

[-rascal-]

3 hours ago, kb5zue said:

The direction of the power button won't matter because it is just a momentary contact but for the PLED contacts, they do matter because if they are incorrect like shown in the first pic, it won't work.  The Light-Emitting Diode that is the PLED is a diode and current only flows in one direction with a diode.  It prevents current from flowing in the wrong direction so if the contact is backwards, the PLED won't come on.

 

BINGO.

 

@Erwins Kitten

The Power LED+ needs to be connected to the PLED+.

The Power LED- needs to be connect to the PLED-.

 

If the voltage going to the LED is negative (e..g. wires hooked up backwards), the LED will not turn on.

Blue = voltage cycling from (+) to (-).

Green = LED current...being on and off.

 

[Dr. Prop]

I have reversed the backwards leads, moved the reset switch, and, for some reason, after an unplug and replug, the power button, reset button, and leds now work! Thanks all!

[kb5zue]

1 hour ago, Erwins Kitten said:

I have reversed the backwards leads, moved the reset switch, and, for some reason, after an unplug and replug, the power button, reset button, and leds now work! Thanks all!

I'm glad that we were able to help and that you were able to get it to work.  That is what this forum is all about.  Good Job.

[Stevin]

On 8/11/2018 at 9:53 PM, Erwins Kitten said:

I have reversed the backwards leads, moved the reset switch, and, for some reason, after an unplug and replug, the power button, reset button, and leds now work! Thanks all!

I’m having the same problem. I have the PLED in the correct locations and on my motherboard but can’t the power light to display. I think it’s has to do with something from the reset switch. Where did you connect the reset switch too?