Having problems with your Altec Lansing ADA 890 Computer Speakers ?

My subwoofer turn it self off after a while after i have turned it on... what chould i do?? ps: The two small ones still working... my set's name is altec lansing ADA890.....


Answers :

Same probleme here: the subwoofer goes randomly on and off, making a "click" noise.\015\012Did you find a solution?\015\012Did you try to push the "Diagnostic" button as suggested by the user manual?
I had a deterioration in bass volume over the last year or so.
i figured that this kind of time related deterioration has to be related to hi ESR in the capacitors.

after taking the ADA890 apart and using an ESR meter i found that almost 80% of the capacitors where defective and rating hi ESR and much lower values then stated on them.
i replaced almost every capacitor and now the ADA890 works just fine.
i suggest using hi temperature & voltage rated capacitor so it will last longer since there is no good ventilation surrounding the circuit boards.
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