On an auria eq4088p back panel which jacks are the audio OUT jacks

Read the user guide that comes with the sound bar. The bar has an optical link and RCA input jacks. The Auria TV should have RCA output jacks, so get a paired cable set with red and white RCA plugs on both ends. The input button on the sound bar will select the connected input when pressed.

Make the connection to the "Variable Audio" output jack of the TV.

can't find that eq 5888 model number but does the tv have a connection labelled as spdif this is a special digital audio out standard by phillips.
http://www.hardwaresecrets.com/everything-you-need-to-know-about-the-spdif-connection/2/
I am not sure if this can be plugged into the sb 2920x-c6 digital in socket or if you need a digital amplifier between the two items ?
Someone else on fixya may know if a digital amplifier is needed or a direct connection from tv to sound bar is possible via a spdif cable.

Well, the USER GUIDE 96 pages is here if it helps.
http://www.manualslib.com/download/230039/Eqd-Auria-Eq3288.html

0038,0035. Check these codes. If you wish to get more details, check the sites linked here. Setup code list, and setup procedure to many popular brand remote controls are given. http://electrohelponline.blogspot.com/ http://remotesearch.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy.

The socket for the jack on the set has a leaf connection that when you insert the jack moves aside routing sound to head phones and cutting it off to speakers= the socket for the jack is out of position inside, either needs to be replaced or tweaked inside just a little.

Not much else can cause this if the headphones work.

I just casually looked at the TV in Menards the other day and the picture quality didn't look very good to me. To confirm my suspicions, I did a little searching. Conclusion: keep shopping

http://other-company.pissedconsumer.com/bait-and-switch-of-auria-tv-20110227224052.html

http://slickdeals.net/forums/showthread.php?t=2663641

http://www.viewpoints.com/Auria-Auria-Model-EQ5588-review-a6a511

What has happened is that one or more of the back light tubes were broken in shipping, AURIA used hard foam packing and the TV could not handle the shock of shipping because of BAD PACKING from AURIA. if you call customer support they will tell you that is a power supply or inverter issue but it's not it's a broken bulb, you know they know about it because they will not tell you one or the other. if you open the Samsung screen (LTA400HM01) you will see that the bottom back light bulb is broken, why AURIA will not address this issue is beyond me. don't waste you time or money on power supply or inverter boards before you look at the back light bulbs.