Hi, Yesterday i bought philips SPA7000B, I connected every speaker according to their socckets, One of my speaker is not playi

Connect the speaker that is not working to the wiring for other rear speaker that is working.
If it doesn't work you have a bad speaker.
If it does then connect the speaker without your extension. Perhaps you have a short between the two wires or a bad connection on one of the joins you made.
If that doesn't help then connect one the the other speakers directly (with the wire that connected it to irs original position) to the rear speaker output that was not working. If it doesn't work the amp in the HTS has a problem. Get it replaced by the seller.