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Posted on Nov 02, 2007

Altec Lansing ACS 54 Transistor Question

Hi, I have a set of the ACS 54 speakers, and one of the small transistors has perished. I am fine with replacing it, but I don't know the number of the part. When it died, part of the surface melted so I can't read the numbers on it. If there is a common cause of this part failing can you please let me know, otherwise just the number of it will help me get going. Or, even just a schematic diagram would be fine as well. Please refer to attached picture if needed. Thanks for any help, Rick


  • Anonymous Aug 12, 2008

    Ref. the U5

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  • Posted on Sep 07, 2009
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Transistor LE120 very low drop voltage regulator,just check in www.alldatasheet.com

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  • Posted on Aug 24, 2008
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Hi , i stay in india. the other day i bought this old woopher from altec lansing. it is acs54. it is without the satellite speakers. how can i help u. my email id is [email protected]

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Hi, I stay in india. there is a market out here near my place where u get old stuff. the other day a guy was selling this woohper . i bought it. it does not have the satellite speakers. how can i help u out

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hi Avsandrick
Happy Holidays!
Doing a driver search don't help much, so I recommend 2 things here, wait until MS, make a Service Pack Cd, for Vista, or go to the Altec Lansing Page and see if for your particular model, there are drivers for vista.
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Hello there
What kind of help on specific device from altec you need?
be more specific
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