Question about Dell HK395 Computer Speakers
It would save me a lot of time if I had a circuit diagram. Traced stereo inputs to card connector OK. One channel "gets lost" somewhere on the board (speakers themselves OK). Can anyone help with a pdf or jpg file?
1. Check the orange multi-pin connector the sufwoofer for a broken or bent pin. If there is a broken pin you can bypass it by cutting open the cable jacket and tap onto the affected wire with a 6 inch or so jumper, and then attach a jumper to the appropriate point inside the subwoofer. Pass the subwoofer jumper out of the case (drill a small hole) and connect it to the jumper you added to the cable.
2. Try wiggling and rapidly rotating the volume control. There are reports this control may become a problem as it ages.
3. I haven't been able to find a schematic. My only recourse was to google the output amp and the 2 op-amp packages for data sheets. They are readily on the internet. Then I laboriously traced out the stereo paths. I found that red and black fine tip felt pens were helpful in marking out the signal paths through the circuit boards.
Posted on Aug 16, 2009
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Posted on Jan 02, 2017
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