Question about Dell 5650 Computer Speakers
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Posted on Jan 02, 2017
the First thing to test are the speakers form a different source. I believe that if you hook them up to another computer or an mp3 player you will find that the problem goes away and they work fine. (I know this by the info you gave me. THe fact that you get a large hum from the card when it is plugged in means that the output on the card has a short in it and is crossing the connections somewhere.
Solution is to have the card replaced or test it with another set of speakers just to be sure it isn't the cable.
Posted on Dec 14, 2008
SOURCE: ADA745 speakers have no output
Had the same issue as treefarmer and guest. Initially I thought that the voltage controlled pre-amps were the problem as well but further testing proved that wrong. If you remove the yellow wire from the RT Front speaker PCB and measure the voltage at the wiper of the pot it is still too low (should swing from 0 to 5 volts). On investigation it turned out that the pot was failing.
I couldn't find a proper replacement pot so had to fix the broken one. After removal and dissassembly it discovered there was a leakage path between the carbon trace and the bushing assembly. The top deck which contains the carbon path for the wiper can be removed by bending back the tabs that hold it to the metal case. Carefully cleared the shorting path with a probe and retested with an ohm meter..
Re-installed and wala it works!
Posted on Nov 04, 2010
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