Question about Harman Kardon AVR 310 Receiver
It appears you do not have a user manual for this receiver. You can get it from this site.
You will see on page 52 there is mention that if no sound from speaker. It is possible the speaker wiring is shorted either on the connector or a speaker is faulty. The amplifier protects itself. Also check you have selected the correct speaker settings.
Hope this helps and you enjoy the system.
Posted on Aug 20, 2010
To work with the unit ( while waiting for you remote )
you may need to check on the manual first.
[PDF] AVR310 Product Sheet - Harman Kardon( click on the link above for more details ).
you need a PDF reader to read the documents after
downloading and saving it on your computer
• If the operators manual still wont do , you may need to
check circuits inside the unit having a troubleshooting
guide like one from here:
a ) Start with the input , then to the op-amp IC. b ) check your cable like those above for co
( click on the link above , just for sample troubleshooting ).
And may need a signal injector or a signal tracer to
properly find the cause.
• A signal tracer can be a simple audio amplifier just to
test if the signal is passing through the stages of the
• If you found that signal have been cut-off on some stages
then it could possibly be from the supply ( low voltage )
or the IC on the Circuit.
Here is a simple sample Signal Tracer:
• But start on the speakers first , you can use a Remote
1.5V battery or 2 and connect it on your speaker
( temporary tester ) , if you can hear scratches on your
speaker then your speakers are probably good.
( actual performance will be heard if the amplifiers are
already working. )
Inside the unit , the Main Amplifiers ( one driving your speaker)
needs a good power supplies rails.
• These amplifiers needs a preamplifier to match the input
impedance of the " Source " input and to tailor the sound
according to your needs.
So Divide and Conquer to find the cause.
It may take a while , but it needs a lot of patience to work
on electronic circuits.
And if you need to have the service manual
only with a fee.
• Check for " Preamp " power supplies and low voltage
regulator or possibly just a cold solder joint on it.
( If main amps are OK )
Posted on Aug 20, 2010
Connect the optical audio OUT on the TV to the optical audio IN on the receiver. Turn the receiver on and set it to input as it was labeled on the connection ("video" or "auxillary" or such). Turn the TV on and set it to an active TV channel (with video and presumably audio info), not to VIDEO 1.
Alse Check the mute is on or not,or you have connected to wrog input or wrong speaker is selected or not.
Let us know if you have somethin more to ask else accept the suggestion.
Thank You for contacting Fixya
Posted on Aug 19, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Feb 15, 2015 | Sharp Aquos Televison & Video
Jan 21, 2015 | Insignia IS-LCDTV32 32 in. Television
Dec 18, 2014 | Samsung Televison & Video
Jun 14, 2014 | Panasonic Viera TH-42PZ80U Plasma TV
Feb 21, 2011 | Sony BRAVIA KDL-52S4100 52 in. HDTV LCD
Jan 09, 2011 | Sharp Televison & Video
Oct 21, 2009 | Mitsubishi WS-65809 65" Rear Projection...
Jul 29, 2009 | Yamaha RX-V2400 Receiver
May 15, 2008 | Toshiba 36A50 36" TV
Mar 11, 2008 | Mintek DTV-263 26 in. LCD Television
342 people viewed this question
Usually answered in minutes!
Level 2 Expert
Level 3 Expert
Level 3 Expert