AVR 145 (serv.man3) - Harman Kardon Audio Service Manual (repair manual). Page 5

SYMPTOM

CAUSE

SOLUTION

Unit does not function when Main

• No AC Power

• Make certain AC power cord is plugged into 

Power Switch is pushed

a live outlet

• Check to see whether outlet is switch-controlled

Display lights, but no sound

• Intermittent input connections

• Make certain that all input and speaker connections 

or picture

are secure

• Mute is on

• Press Mute Button

• Volume control is down

• Turn up volume control

No sound from any speaker;

• Amplifier is in protection mode 

• Check speaker wire connections for shorts at receiver and 

light around power switch is red

due to possible short

speaker ends 

• Amplifier is in protection mode 

• Contact your local Harman Kardon service center

due to internal problems

No sound from surround or

• Incorrect surround mode

• Select a mode other than Stereo

center speakers

• Input is monaural

• There is no surround information from mono sources

• Incorrect configuration 

• Check speaker mode configuration                                       

• Stereo or Mono program material

• The surround decoder may not create center- or rear-channel 

information from nonencoded programs

Unit does not respond to

• Weak batteries in remote

• Change remote batteries

remote commands

• Wrong device selected

• Press the AVR selector

• Remote sensor is obscured

• Make certain front panel sensor is visible to remote

or connect an optional remote sensor

Intermittent buzzing in tuner

• Local interference

• Move unit or antenna away from computers, fluorescent 

lights, motors or other electrical appliances

Letters flash in the channel indicator

• Digital audio feed paused

• Resume play for DVD

display and digital audio stops

• Check that Digital Input is selected

In addition to the items shown above, additional information on troubleshooting possible problems with your AVR 145, or installation-related issues, may
be found in the list of "Frequently Asked Questions" which is located in the Product Support section of our Web site at www.harmankardon.com.

AVR 145 OM (New)  8/4/06  1:19 PM  Page 45

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AVR 145/230 service manual

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