Troubleshooting

If you have any trouble using the AV receiver and speak- ers, look for a solution in this section. If you can’t resolve the issue yourself, contact your Onkyo dealer.

Power

Can’t turn on the AV receiver?

Make sure that the power cord is properly plugged into the wall outlet.

Unplug the power cord from the wall outlet, wait five seconds or more, then plug it in again.

The AV receiver turns off as soon as it’s turned on?

The amp protection circuit has been activated. Remove the power cord from the wall outlet immedi- ately. Disconnect all speaker cables and input sources, and leave the AV receiver with its power cord discon- nected for one hour. After that, reconnect the power cord, and then set the volume to maximum. If the AV receiver stays on, set the volume to minimum, discon- nect the power cord, and reconnect your speakers and input sources properly. If the AV receiver turns off when you set the volume to maximum, disconnect the power cord, and contact your Onkyo dealer.

Audio

There’s no sound or it’s very quiet?

Make sure that the digital input source is selected properly (page 33). Press the [DIGITAL INPUT] but- ton repeatedly.

Make sure that all audio connecting plugs are pushed in all the way (page 22).

Make sure that the polarity of the speaker cables is correct, and that the bare wires are in contact with metal part of each speaker terminal (page 19)

Make sure that the speaker cables are not shorting.

Check the volume. It can be set to MIN, 1 through 79, or MAX (page 34). The AV receiver is designed for home theater enjoyment and has a wide volume range for precise adjustment.

If the MUTING indicator is shown on the display, press the remote controller’s [MUTING] button to unmute the AV receiver (page 38).

While a pair of headphones is connected to the PHONES jack, no sound is output by the speakers (page 39).

Check the digital audio output setting on the con- nected device. On some games consoles, such as those that can play DVDs, the default setting is off.

With some DVD-Video discs, you need to select an audio format from a menu.

If your turntable doesn’t have a phono preamp built-in, you must connect one between it and the AV receiver.

If your turntable uses an MC cartridge, you must con- nect an MC head amp, or an MC transformer and a phono preamp.

Specify the speaker distances and adjust the individual speaker levels (pages 46, 47).

The input signal format is set to PCM or DTS. Set it to Auto (page 50).

Only the front speakers produce sound?

When the Stereo or Mono listening mode is selected, only the front speakers and subwoofer produce sound.

Make sure the speakers are configured correctly (page 48).

Only the center speaker produces sound?

If you use the Pro Logic IIx Movie or Pro Logic IIx Music listening mode with a mono source, such as an AM radio station or mono TV program, the sound is concentrated in the center speaker.

Make sure the speakers are configured correctly (page 48).

The surround speakers produce no sound?

When the Stereo or Mono listening mode is selected, the surround speakers produce no sound (page 40).

Depending on the source and current listening mode, not much sound may be produced by the surround speakers. Try selecting another listening mode.

Make sure the speakers are configured correctly (page 48).

The center speaker produces no sound?

When the Stereo or Mono listening mode is selected, the center speaker produces no sound (page 40).

Make sure the speakers are configured correctly (page 48).

The surround back speakers produce no sound?

The surround back speakers are not used with all lis- tening modes. Select another listening mode

(page 40).

Not much sound may be produced by the surround back speakers with some sources.

Make sure the speakers are configured correctly (page 48).

When speaker set B is turned on, speaker set A is reduced to 5.1-channel playback, and the surround back speakers produce no sound.

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Onkyo HT-S780 instruction manual Troubleshooting

HT-S780 specifications

The Onkyo HT-S780 is a home theater system designed to deliver an immersive audio-visual experience for movie enthusiasts and music lovers alike. This all-in-one system combines the latest technologies with user-friendly features, making it an ideal choice for both newcomers and experienced users in the world of home entertainment.

One of the standout features of the HT-S780 is its 5.1-channel surround sound setup. With five speakers and a powerful subwoofer, this system creates a dynamic audio landscape that draws users into the action of their favorite films and TV shows. The system is equipped with Onkyo’s proprietary technologies, including Dolby Atmos and DTS:X, which provide an enhanced three-dimensional sound environment. This means that sounds can be perceived from all directions, adding remarkable depth and realism to the viewing experience.

The receiver at the heart of the HT-S780 boasts an array of connectivity options. It features multiple HDMI inputs, allowing users to connect various devices such as Blu-ray players, gaming consoles, and streaming devices. With HDMI ARC support, the system is also capable of transmitting audio back to the receiver from compatible smart TVs using a single HDMI cable. This simplifies setup and reduces cable clutter.

In addition to HDMI connectivity, the HT-S780 is equipped with Bluetooth technology, enabling wireless audio streaming from smartphones, tablets, and computers. This feature allows users to enjoy their favorite music without the need for physical connections, making it convenient for streaming services and personal music collections.

Another notable characteristic of the HT-S780 is its room calibration feature, which utilizes AccuEQ technology. This system analyzes the acoustics of the room and optimizes speaker performance to ensure balanced audio regardless of the room's layout. This ensures that the listener experiences consistent sound quality throughout the space.

The design of the Onkyo HT-S780 is both stylish and functional. The compact speakers can easily blend into various home decor styles, while the receiver’s intuitive interface allows for easy navigation and setup. The included remote control offers added convenience, enabling users to adjust settings and switch inputs effortlessly.

Overall, the Onkyo HT-S780 stands out as a comprehensive home theater solution that combines advanced audio technologies with user-friendly features. Its combination of surround sound, versatile connectivity, and room calibration makes it a solid choice for anyone looking to elevate their home entertainment experience.