Altec Lansing MX5021 Very weak bass

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  • ant3202
    Badcaps Veteran
    • Jun 2006
    • 275
    • Singapore
    #1

    Altec Lansing MX5021 Very weak bass

    Hi As mentioned, been using this for almost a year and recently it had a very weak bass / dying on this Altec Lansing Subwoofer,
    tried fiddling with the control pod but still stuck in a faint bass.

    other satellite speakers were working fine. i had tested the subwoofer, by dismantling and placed it with another same system and it works fine.

    any where shd i start to look out on where it fails?

    btw the caps, no bloats no leaks
    Tags: None
    • ant3202
      Badcaps Veteran
      • Jun 2006
      • 275
      • Singapore
      #2
      Re: Altec Lansing MX5021 Very weak bass



      one of the chip TDA7265, next to TDA 7295 is currently shipping.
      all transistor changed, and some mod perhaps
      Attached Files

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        • Longbow
          Badcaps Veteran
          • Jun 2011
          • 623
          • USA
          #3
          Re: Altec Lansing MX5021 Very weak bass

          Clue us in here. The satellite speakers are powered from the main amplifier, are they not? So the fact that they work is irrelevant to whether the subwoofer works.

          The subwoofer has a built in amplifier. You need to troubleshoot that unit beginning with the power supply voltages, looking for obvious signs such as burned, overheated parts, loose connections and so on. Then you can proceed to the next step. List power supply voltages...
          Is it plugged in?

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