WMC Discrete power On and OFF - AVS Forum
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post #1 of 3 Old 05-31-2014, 05:03 AM - Thread Starter
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Hi
This is my first post here at AVS forums.
I wanted to share my solution of having discrete power for sleeping and waking the PC.

I purchased a HP remote and receiver from Ebay, model number of the receiver is OVU400102/71 HP P/N 5187-4593

Reading many forms on discrete 'ON' and 'OFF' nothing really worked for me the way i wanted it to.

I use Windows 7 x64 and a philips pronto 9400 for my universal remote

Anyway i changed the below registry key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\usbcir\Parameters\

change DefaultWakePayload from 12 to 41 (HEX 29)

These are the IR codes i use to give me the discrete ON and OFF through the pronto
Wake
616A 0000 0000 0001 0004 0029
Sleep
616A 0000 0000 0001 0004 002A

The only thing that that doesnt work after the regsitry change is the orginal HP remote power toggle button for turn ON

Hope this works for others

cheers
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post #2 of 3 Old 05-31-2014, 08:48 AM
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What worked for me is setup the sleep button to do nothing in Windows power settings. It still wakes up the HTPC (it's a hardware event), but doesn't send it to sleep. The off button on the remote will then power off the display and the receiver, and the HTPC will go to sleep in 10 minutes of so if nothing is playing. I like your method, but I often use the MCE IR keyboard and wouldn't want to lose its on/off function. I would probably modify the off rather than the on code, though.
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post #3 of 3 Old 05-31-2014, 04:47 PM - Thread Starter
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I came from using STB and popcorn hour and wanted it to operate as close as possible to an AV device as possible. The discrete function was the last thing I wanted to work. I have a wireless keyboard on standby just in case but my pronto does everything I need. The sleep code by default worked, it was the discrete wake up that didn't work without the registry modification.
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