Filter
Top Products
34
Troubleshooting guide
If a problem occurs while you are using the remote controller, first
try to operate the controls on the front panel of the TX-DS494 to
make sure that it is not due to a malfunction (or worn out batteries)
in the remote controller.
POWER
No power.
• Power cord is disconnected.
➞ Connect power cord (page 20).
• There is external noise in the computer circuits of this unit.
➞ Remove the AC plug from the outlet and then plug it again
(page 20).
• AC fuse blown.
➞ Contact your Onkyo Service Center.
Power on but no sound.
• MUTING indicator flashes.
➞ Press the MUTING button on the remote controller to turn
it off (page 23).
• Bad connections.
➞ Check connections, speaker leads, etc (pages 10-17).
• Amplifier protection circuitry has been activated.
(“PROTECT” will be displayed.)
➞ Contact your Onkyo Service Center.
• Input selector is not set properly.
➞ Set to correct input source (page 22).
• Headphones are connected.
➞ Lower volume and then disconnect headphones (page 8).
SPEAKERS
No sound from the center speaker, or very minimal
sound.
• Speaker cable is not corrected.
➞ Check the connection between the TX-DS494 and the
speaker (page 17).
• Listening mode is set to STEREO or ORCHESTRA.
➞ If listening mode is set to STEREO or ORCHESTRA, the
center speaker outputs only the effect sound (pages 26-28).
• Speaker configuration is set to 2 ch or 4 ch.
➞ Set the speaker configuration to the 3 ch or 5 ch (page 21).
No sound or very low volume from subwoofer.
• Subwoofer mode is set to “OFF”.
➞ Check the subwoofer mode setting (page 21).
• Subwoofer mode setting is improper.
➞ Check the subwoofer mode setting (page 21).
Hum, low-frequency noise.
• Poor or no input ground.
➞ Check outer conductor of input plugs (pages 10-15).
• Poor or no phono motor ground.
➞ Check for proper ground connection (page 13).
• The placement of the audio connection cables on the rear panel
is incorrect.
➞ Adjust the placement of the cable to reduce hum.
Howling when the volume is turned up.
• Turntable and speakers are too close together.
➞ Move them farther apart.
Rough or scratchy sound. High range is not clear.
• Stylus of turntable pick-up is worn.
➞ Replace.
• Turntable stylus tip is dirty.
➞ Clean.
• Treble control too high.
➞ Turn treble control down (page 8).
VIDEO and AUDIO
Desired picture does not appear.
• Improper connection.
➞ Check the connection again. Insert the plugs and
connectors completely (pages 10-15).
Picture and sound do not match.
• Improper connection.
➞ Check connections (pages 10-15).
No picture appears on the TV screen (or monitor).
• TV (or monitor) is not set to receive the output signals from the
receiver.
➞ Set the TV (or monitor) to the receiver input.
• Video cable is not connected securely.
➞ Check connections (pages 10-15).