Question about Harman Kardon HK19.5 Computer Speakers

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Speakers not working

When is the green LED supposed to light up on the front of the speakers?
I received a set from my son, plugged the power supply in and connected them to my PC and there is no sound and the LEDs are not on.

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Hi,

Most computer speaker system will indicate power when switched on. The on switch could be a push button type or rotary built-in to the volume control. There are however models that are automatically powered on once plug to the mains.

In instances such as this that even though plug to the mains, switched on and yet still LEDS does not light up is indicative of a power supply problem. This could be as simple as a fuse blown or worst burnt components.

Pls, first thing you need to check is if the speakers are rated the same as the local/mains voltage where your are. Example, if the speakers were bought from and meant for US, chances are that they are 120VAC; if your are currently based in Europe, then the local mains would be 220~240VAC, simply plugging in and powering would burn a fuse or a transformer or a regulator. The reverse could possibly also hold true since it will be getting about half of what it is designed to receive (unit is 240 but used in 120).

If the above does not apply to your concern or even if it does, the power supply must be checked, diagnosed and possibly would require repair. This would involve familiarity and knowledge of electronic circuitry and components, use of a DVM and a soldering iron. If you are not comfortable going through this route, perhaps your best bet would be to seek the services of an electronics technician.

Hope this be of help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Posted on Feb 03, 2008

  • Louie  Role
    Louie Role Feb 07, 2008

    Hi again,

    Glad to be of assistance and appreciate the rating.

    Cheers.

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