Turns on but no sounds comes from speaker. Product highlights: 135 watts x 7 into 8 ohms (20-20,000 Hz) at 0.08% THD THX Select2 Plus certification THX listening modes for optimized surround sound at any listening level Dolby TrueHD, DTS-HD Master Audio, Dolby Digital Plus, DTS-HD High Resolution Audio, THX Surround EX®, Dolby Digital EX, DTS-ES™, Pro Logic® IIx, Pro Logic® IIz, and DTS Neo:6 decoding SIRIUS satellite radio capable (requires SIRIUS subscription and optional SiriusConnect™ home tuner kit) iPod/iPhone iPod® integration (requires optional UP-A1 iPod dock) HD Radio ready (requires optional Onkyo UP-HT1 HD Radio tuner) Audyssey Laboratories' MultEQ six-point auto setup and room calibration system (microphone included) Audyssey DSX processing for enhanced surround sound height and width effects using additional front speakers Audyssey Dynamic EQ™ for fuller sound at lower listening levels Audyssey Dynamic Volume™ mode to keep listening levels steady three-room/three-source output: powered and line-level stereo audio output for 2nd room (using powered 2nd room stereo output allows 5.1 home theater in main room) powered and line-level stereo audio output for 3rd room (using powered 3rd room stereo output allows 3.1 home theater in main room) RIHD (Remote Interactive over HDMI) control via HDMI with compatible components (HDMI-CEC) back surround speaker channels re-assignable for bi-amping front left and right speakers 192kHz/24-bit Burr-Brown digital-to-analog converters for all channels Direct/Pure Audio modes for better stereo sound high-current amplifier design on-screen display for easier system setup and operation DLNA certified for better compatibility with other certified networking components learning/multibrand remote 17-1/8"W x 7-13/16"H x 17-3/4"D weight: 40 lbs. warranty: 2 years Our 60-day money-back guarantee Connections: 1080p-compatible HDMI switching: 6 in, 1 out 1080p video upconversion with Faroudja DCDi Cinema Enhancement for all...