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Theoldwizard1
Level 4
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Solved!

Power button cable

HP Recommended
p
Microsoft Windows 11

I want to re-use the case from an older (2007-2008) Pavilion desktop.  There is one 2 wire cable I am unsure of where to plug into the new motherboard.  It has 2 very thin wires (22-24 AWG?) and a very small connector (smaller that the standard headers)  These run up somewhere near to top of the case where the power button is along with 2 USB 2.0 and audio in and out.  The wires are blue and black, twisted.  The socket  on the original motherboard is not labeled.  What are these for ?

 

I am pretty certain we have all of the other cables plugged into the correct sockets.  The new power supply will not turn on !

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Theoldwizard1
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Level 4
61 26 5 5
Message 3 of 3
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Here are a couple of pictures

IMG_5099.jpgIMG_5102.jpg

 

Still not 100% certain, but it is either a power indicator or a disk activity LED.

 

The good news is the Front Panel cable was plugged into the wrong socket.  Once that was corrected, the new (non-HP) mother board started and passed power on self test !

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NonSequitur777
Level 9
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HP Recommended

@Theoldwizard1,

 

Just to let you know I spend the last hour researching what this elusive 2-wire cable could be.  This is a tough one... It couldn't be an HP "Hood Sensor Lock" (such as p/n: 628644-001), because the last time I checked, this part has two twisted wires as described by you, but the wire colors are red and black, and it has a 3-pin connector:

 

NonSequitur777_0-1651889927604.png

Anyway, this link tells you all you would ever care to know about this part: c01694939 (hp.com), but regardless, you don't need this switch and almost everybody gets rid of it because it is a hassle: "Unplug the Solenoid Lock cable from the system board and remove the lock assembly".

 

Kind Regards,

 

NonSequitur777

Dear fellow Forum member, I sincerely hope my response is helpful. If it is, please consider to click "YES" on the: "Was this reply helpful?" button. If my response answered your question, please indicate below as an "Accepted Solution".
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Theoldwizard1
Author
Level 4
61 26 5 5
Message 3 of 3
Flag Post
HP Recommended

Here are a couple of pictures

IMG_5099.jpgIMG_5102.jpg

 

Still not 100% certain, but it is either a power indicator or a disk activity LED.

 

The good news is the Front Panel cable was plugged into the wrong socket.  Once that was corrected, the new (non-HP) mother board started and passed power on self test !

1 person found this reply helpful
Was this reply helpful? Yes No
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