Question about Recoton Advent Advent AW820 Computer Speakers

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Spkrs quit receiving signals

ADVENT AW-820 900 MHz Wireless Stereo Speaker System One speaker just hums... another one doesn't. Green light says it captures signal but not working. Been using a different transmitter for a year now. One for a 900mghz Sony. The Sony spkr unit still working fine. Just the last Advent died. Original transmitter just didn't have the clear signal needed. Too touchy. Sony works much better. Spkrs. died at different times. One a year ago... it's the one that hums. Then last just quit. Power supllies good. Units light up. No increase or change in volume with or without the green light. Internal power amps dead? Can I replace? Costly repair to send in so I'd like to salvage myself. Can always hard wire them.

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Hi, assuming you can open the enclosure of the Advent, work on the amp section (please make sure you've isolated the power supply and you will be working with the low voltage section of the circuitry only.) Inject an audio signal, it does not matter where in the amp section, just try the different solder points of the small capacitors normally in the 1uf value. at least one of them should give you a good amplified output from the speakers. In the absence of a signal gen, you may want to try (with care)using your bare finger which should produce a humming sound of about 60HZ or a slight thump in the speaker. If such a sound is produced, then the amp is good and the powersupply is doing its work. You have now isolated the problem to the 900MHz receiver. Am not sure if you can purchase modular replacement in your area but you can also try the sig gen or finger method except for the front end (rf section). Re the humming sound, such a problem is normally related with the power supply section with a defective or leaky capacitor. It is also possible that the input stage of your amp is not grounded right. You actually have just to work on it in stages to simplify fault diagnosis. Since you can hard wire, why not try salvaging parts/module from one unit and putting it in the other to make at least one working while looking for replacement parts/module for the other half of the Advent. Hopes this work out for you. Please let me know how things turn up. Regards

Posted on Apr 11, 2007

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