No Rear Audio on ECS P4M800PRO-M

[21stHermit]

If have an ECS P4M800PRO-M v2 MB which works great except that I can't seem to get any speaker output from the rear audio jack (green).

The MB has a header for front audio and this works indicating that the on board audio chipset is okay. This audio header had two shorting bars on it when I received the MB, I removed them to install the front audio connector. Not sure what the purpose of the shorting bars was.

Does anyone have any clues as to what the problem might be? 😕

Thanks
Hermit

 

[Peter]

Yes I do. These jumpers you removed are there to loop the signal through to the rear jacks. You removed them to connect your front jacks, which is correct. Properly done front jacks have a loopback output that comes live when nothing is connected in front, so the rear jacks continue to be usable.

If your case manufacturer went $2 too cheap, then you don't have the loopback feature, and you have to make up your mind whether you want front or rear at build time.

 

[21stHermit]

Peter,

Okay, that makes a lot of sense. Could you help me replace the jumpers, having speakers in the rear would be more useful. I didn't note their location and the manual doesn't say either.

Its a new HP Compaq case and the MB I replaced had both front and rear jacks. I used the rear jacks with the front connector in place on that MB. Funny that it would have worked before and not now. 😕

Thanks, :beer:
Hermit

 

[21stHermit]

Peter,

I downloaded the PDF manual, it had a MB color photo which I could zoom into to figure out which pins to short.

Thanks for putting me on the right track. :beer:

Hermit