Onkyo TX-8255 instruction manual Troubleshooting, Power, Audio, Tuner

Models: TX-8255

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Troubleshooting

Troubleshooting

If you have any trouble using the receiver, look for a solution in this section.

If you can’t resolve the issue yourself, try resetting the receiver before contacting your Onkyo dealer.

To reset the receiver to its factory defaults, turn it on and, while holding down the [LINE 2] button, press the [ON/STANDBY] button.

“Clear” will appear on the display and the receiver will enter Standby mode.

Note that resetting the receiver will delete your radio presets and custom settings.

Power

Can’t turn on the receiver

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

Unplug the power cord from the wall outlet, wait 5 seconds or more, then plug it in again.

The STANDBY indicator is flashing

The amp protection circuit has been activated. Remove the power cord from the wall outlet immediately. Disconnect all speaker cables and input sources, and leave the receiver with its power cord disconnected for 1 hour. After that, reconnect the power cord and press the [ON/STANDBY] button again. If you can not resolve the problem, contact your Onkyo dealer.

Audio

There’s no sound or it’s very quiet

Make sure the speaker set A or B is on (page 20).

Make sure that all audio connecting plugs are pushed in all the way (pages 12-18).

Make sure that the polarity of the speaker cables is correct, and that the bare wire is in contact with metal part of each speaker terminal (page 12).

Make sure that the speaker cables are not shorting.

Make sure that the inputs and outputs of all compo- nents are connected properly.

Make sure that the correct input source is selected (page 20).

If the MUTING indicator is shown on the display, press the remote controller’s [MUTING] button to unmute the receiver (page 21).

If your turntable doesn’t have a phono preamp built- in, you must connect one between it and the receiver. If your turntable uses an MC cartridge, you must con- nect an MC head amp, or an MC transformer and a phono preamp.

Noise can be heard

Using cable ties to bundle audio cables with power cords, speaker cables, and so on may degrade the audio performance, so don’t do it.

An audio cable may be picking up interference. Try repositioning your cables.

Tuner

Reception is noisy, stereo FM reception suffers from hiss, or the FM STEREO indicator doesn’t appear

Relocate your antenna.

Move the receiver away from your TV or computer.

Listen to the station in mono (page 26).

When listening to an AM station, operating the remote controller may cause noise.

Passing cars and airplanes can cause interference.

Concrete walls weaken radio signals.

If nothing improves the reception, install an outdoor antenna.

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Onkyo TX-8255 instruction manual Troubleshooting, Power, Audio, Tuner