Question about Dell ADA745 Computer Speakers

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ADA745 speakers have no output

The 5 speaker system worked great for two years, then just stopped outputting any sound.  The sub powers up and the satellite speaker powers up but no sound.  I tried hooking them up to two other computers with the same result.  I opened the back of the sub to look at the circuit card and there were no obvious problems such as burnt areas on the board and the output drivers appeared to be ok.

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Re: 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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Try to replace the speaker of your sub-woofer... maybe that can fix it!


Jun 06, 2010 | Creative Labs Inspire 5200 Computer...

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I just got a used set of altec lansing ADA745 computer speakers and can't get power to them. I have never seen computer speakers w/ two wires for input to the computer. I plugged the usual green colored...

That is the setup guide for the speakers.

The two wires plug into a cable that then that single cable plugs into the computer, this way you have sound coming out of the left and right hand speakers.

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Oct 08, 2009 | Boston Acoustics BA7500 Computer Speakers

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Green light on speakers and sub. No sound - only hissing noise

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Sep 17, 2009 | Computer Speakers

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Connect Altec Lansing ADA745 to HD TV RCA output for home theater

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1 Answer

Right speaker doesnt have sound

1ST.-The right jack could be damaged!!
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If nothing nothing changes.The left still works & the right still does not work, then it is the jack (shorted ?, opened internally ?)

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