Question about Harman Kardon HK19.5 Computer Speakers

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Right speaker stops working

The right speaker intermittently stops working (with increasing frequency). Fiddling with the cable that connects to the left cable seems to fix it, but only temporarily. That leads me to believe there's a loose connection inside. The trouble is, I just fought with it for a half hour and couldn't open the case! Any suggestions on how to get these open without cracking it permanently? My speakers are the black ones that Dell shipped with black laptops (same shape as the white ones, but a different color plastic).

Thanks!

Posted by r_carollo on

  • Anonymous Sep 19, 2008

    The left speaker is working, while the right speaker is silent. Disconnecting and re-connecting the wire connecting the two seemed to work for awhile, but then, the right one stopped working again. The connection is either on or off. Right now, the right speaker isn't working.

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bottle571-ka

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A couple of years later, but maybe this will be useful to someone:
1. Disconnect the cables (input, power, 2nd speaker).
2. Undo the two screws on the base of the casing.
3. The two knobs can be pulled off. Underneath there are two nuts that hold the spindles to the casing. Undo these.
4. The fabric cover is a push fit. Prise it off the front. If needed, use a (non-metal) tool that won't damage the plastic casing.
5. Under the cover, the two top holes contain screws - undo these.
6. Four screws hold the actual speaker to the casing. The two lower ones are slightly longer and also hold the casing together. Note this for reassembly.
7. You can now gently part the front and rear parts of the speaker housing.
8. To completely separate the parts, you need to disconnect the red and black wires that go the the speaker. The are push fit 'spade' type connectors - a tight fit, but removable.

My problem is similar - loss of left channel. I think the problem is in the headphone socket as wobbling it or inserting non-conducting objects can temporarily restore the channel. These sockets switch off the speaker when you plug in the jack, so I think the switch is faulty. I plan to desolder this part to inspect, repair, replace or bridge the connection and do without the socket.

Hope that helps.


Posted on Feb 04, 2010

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