My 10 year old acs 495s are starting to hum badly. I'm certain that the power supply regulator or filter caps are going. I would like to obtain the schematic but both Dell and Altec say they don't have it.
SOURCE: output board for Altec Lansing ADA995
I had the same problem. One day I heard two pops and the speaker, including the power light, were dead. Neither Dell nor Altec Lansing support them. They're throw-aways, unless you know a genius electronics technician.
SOURCE: Altec Lansing ada745 fuse
It is written on the sub. You can also take it out or look at the spare which is taped to the power cord wall plug. I believe it's T1A 250V fuse
SOURCE: Finding replacement Power Supply for Altec Lansing
I did the same! Thanks for suggesting a call to Customer Support (800)258+3288. The guy didn't seem overly pleased to help, but he did promise to send me a new power supply. Also, he said that they don't make the iM7 anymore, but I had already found out that the iM9 uses the same power supply. I, too, will wait and see.
SOURCE: Altec Lansing ada745 fuse
Yes, it's a 1A 250V glass fuse, 0.75" (1.9cm) long. The only other number on the fuse is "239", if that means anything. You take it out by putting a flat screwdriver in the slot on the fuse holder cap, turn counter-clockwise, and pull out once it releases.
SOURCE: What's the volt & amps of Altec Lansing AVS300 2.1 speaker system
Your adapter is Part No. AVX300-A6859, Model No. 9701-00748-IUND.
Or You could get a universal that is rated for output of 18volt DC, 650ma, Center Positive.
I have used a 15volt DC, 900 ma with no problem, but I never run the volume high.
Good Luck
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