Having problems with your Dell ADA745 Computer Speakers ?

ADA745 speakers have no output

\015 The 5 speaker system worked great for two years, then just stopped outputting any sound.\302\240 The sub powers up and the satellite speaker powers up but no sound.\302\240 I tried hooking them up to two other computers with the same result.\302\240 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.\015

Answers :

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!
Repair Help & Product Troubleshooting for Dell ADA745 Computer Speakers

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ADA745 speakers have no output


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