Troubleshooting a stereo system that is not producing sound begins with
isolating the problem. Is it the receiver, the speakers, the source component or
speaker wires causing the problem? Starting with the most common/most likely
problems, eliminate the possible causes until the problem has been isolated,
then proceed to correct or repair it. Note: Always turn off the power to the
system when connecting or disconnecting cables and wires. Turn on the system to
after each step to check for correct operation..
- Check Speaker Wires: Inspect the speaker wires from the receiver to the
speakers and look for damage or loose connections. Pets can chew through speaker
wires. Ensure that the speaker wires are firmly connected on both ends. Make
sure that the insulation is adequately stripped on both ends of the wires and
they are inserted far enough to make good contact with the speaker connectors.
If the problem persists, move to the next step.
- Check Speakers: If possible, connect another speaker to the receiver and
test the system. If it does, the speakers may be damaged or defective. If the
problem persists, move to the next step.
- Check the Source Component(s): If you are using a CD or DVD player, try
using the AM/FM tuner built into the receiver, or a tape player or any other
source connected to the receiver. If the receiver works on some sources but not
others, the problem could be the analog or digital cables between the source
component(s) and the receiver. Replace the suspect cables and try the source
- Check the Receiver: Make sure the receiver is plugged into the wall and the
wall outlet is working. Make sure that the speakers are turned on via the
Speaker A/B switch (found on the front panel of most receivers). If the lights
on the front panel illuminate when turned on, the problem could be the
amplifiers in the receiver. Try using a pair of headphones connected to the
receiver to verify that the receiver is operating. If you hear sound from the
headphones it means that part of the receiver is working. Make sure the correct
source is selected on the receiver.
- Try Another Receiver: If all of the steps above do not work, it is likely
that the problem is isolated to the receiver. If possible, connect another
receiver or amplifier to the system and try again. If the system works, the
problem is the receiver. Contact the manufacturer or service center for further
advice or repairs.
Note: Surround Sound units have multiple Input source
Selection Switches which allow multiple Input
No power from wall socket. Check for socket wall switch and/or try
The power cord is not plugged in.
The power switch is not turned ON.
Cables are not fully plugged into audio modules.
Speaker wires are not connected at speakers, or audio unit terminals.
Input source (DVD, LD, TV, VCR, Game, Computer) is not connected to audio
Input source is not turned ON.
Input source output volume Muted, or Minimized.
Audio unit Master Volume switch is OFF, or Minimized.
Input source Selection Switch (applicable models) is different from cables
connected to audio unit.
Optical cord is strained at connection (digital optic fiber models only).
- Input source" is the device providing audio directly into the
speaker or surround system.
- "Audio unit" is the speaker or surround system main component with
- "Audio components" include DVD, LaserDisc (LD), CD-ROM, Cassette
Tape, Satellite Tuners, Game Players, VCR's, TV's, Record Turntables, or any
other media device which may be connected directly to a primary Input source.
- Audio cables: Stereo or Mono Audio Jacks
Audio jack is not plugged in all the way, only half way.
Individual speaker wires are not connected at speaker, or audio unit
Wrong cable (mono speaker-to-speaker cable) being used instead of stereo
Source audio output is Mono, but stereo cable is being used (get
Mono-to-Stereo adapter or cable; sound is still Mono but all speakers will
Change MODE selection (Surround Sound models only; Center and
Rear speakers are not active for all Modes).
No Sound Front Speakers
for some Modes
Left/Right Front and Rear Speaker wires reversed at audio unit output
terminals (Rear Speakers are not active for all Modes).
Input source volume is Minimized.
Individual speaker control volumes are Minimized (applicable models).
Some or all computer source volume controls are Minimized.
Input source volume is Maximized.
Input source connection is a Speaker Out versus Line Out. Change to Line
Out, or reduce volume on Speaker Out to very low level from Input source.
Audio unit Master Volume is Maximized (reduce to about 95% or
Audio unit Subwoofer Volume is Maximized (reduce to about 95%
Computer source volume controls are Maximized for some sources not
known to be active (default setting for some soundcards is
automatically Maximum even for audio sources not in use or inactive).
Open Advanced Volume Controls, Select Mute ALL, Save
setting; then unMute ALL and activate only individual audio sources
actually intended to be used, Save audio settings (never
set any audio level above 95%).
Input source is stereo, but Mono audio jack cable is being used.
Audio cables could be damaged or have short circuits.
Left/Right output from other audio components is crossed going into Input
Too many audio components connected to Input source at the same time. Turn
OFF unneeded other audio components. *If problem continues, you
may need to unplug certain components from overall system and obtain separate
selection switches to select and deselect specific components from the main
Input source (even when OFF some electronics audio circuits allow a certain
amount of drain on audio signals which can weaken or distort overall
audio output in combination with other components).
Shrill Feedback Noise
An audio source is feeding from output back into input at the Input source
component. Check all component cables in and out.
A microphone input source is ON. Mute Microphone volume.
Check computer Advanced Volume Controls: Options, Properties,
Recording. Select ON only those sources required (deselect or mute
Microphone, and External Line In as needed). Also try
deselection/mute of Midi and Wave selections on Playback
Left and Right cables are crossed between Input source and audio unit input.
Left and Right cables are crossed from other audio components going into
Left/Right sound same
Original audio is MONO.
Mono output from the Input source (check settings).
Computer AWE64: access Advanced Volume Controls, Select 3D Stereo
Enhancement, Save audio settings (AWE64 default
setting is MONO).
Bass Volume Low
Original audio has poor Bass levels or no Bass at all.
Check Bass setting in computer Advanced Volume Controls.
Bass individual Volume control is Minimized.
Treble Volume Low
Check Treble setting in computer Advanced Volume Controls.
Treble individual Volume control is Minimized.
Does Not Work
Remote Control batteries are dead, or very weak.
Distance to main unit is too far (Max distance ~7meters).
Angle of reception at main unit is too oblique (Max angle about 30-45º)
Remote Control is overheated by exposure to sunlight (store in shaded