Filter
Top Products
15
HK 990
Troubleshooting
Troubleshooting
This unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. So if you have a problem, first check this list for a possible solution. If the
problem persists, consult your authorized Harman Kardon service center.
If the problem is... Make sure that...
No lights illuminate when power cord is plugged into AC outlet. The unit is plugged into a live outlet. •
No sound is heard. Speaker switches corresponding to the desired speakers are pressed. •
Correct source button has been pressed. •
Volume is turned up. •
Speaker wires are connected properly. •
Hookup wires to source component are connected properly. •
Sound is not heard from the speaker system on one side. The speaker wires and connection wires are connected correctly. •
The balance setting is at 0. •
When listening to stereo sound, the left and right sounds are reversed. The speaker wires are connected correctly. •
The wires between components are connected correctly. •
Intermittent or continuous buzzing or hissing. The unit is away from fluorescent lights, TV, motors and other electrical •
appliances.
The remote control and front panel controls don’t appear to work. You try disconnecting the AC line cord from the wall socket, waiting five •
minutes and then reconnecting it.
Humming noise when listening to LP. Ground wire from record player has been connected to ground terminal on •
amplifier.
Cable from record player is away from power cords and speaker cables. •
Howl or ringing when listening to LP. Record player is not too close to speakers. •
Record player is on stable surface. •
Low sound level when listening to LP. Cable from record player is connected to the Phono jacks. •
The MM Input has not inadvertently been used with an MC phono cartridge. •
LP sound is distorted and too loud. The MC Input has not inadvertently been used with an MM or MC High Output •
cartridge.
You can find additional troubleshooting information in the FAQs link on the Support page at www.harmankardon.com.