Altec Lansing ACS90

[Nonasoft]

I bought an ALTEC LANSING MULTIMEDIA COMPUTER SPEAKER SYSTEM ACS90 made in China. They speaker was too god, sounds so well and served me. Later, it developed a little problem which made me take it a technician who burnt one IC inside. I later took it to another man, the man replace two ICs inside as the problem but was never good. So I was asked to go to the best technician in my area, when I went he asked me to provide the IC numbers the man changed so I was able to provide one remaining the one that starts with LM.

Please can somebody who has smiliar speaker help me out with the IC number that starts with LM. It is the smaller IC.

To view the speaker's full image http://cgi.ebay.com/Altec-Lansing-A...0545507QQihZ010QQcategoryZ41845QQcmdZViewItem

 

[BWRX]

Hi Nonasoft. I made this a new thread for you.

Now on topic 🙂 I actually think I have a pair of these speakers disassembled at home! When I get home I'll have a look at the amp circuit and see if I can tell you what chip is used. I don't think it is one from National's Overture series.

 

[jaycee]

It probably uses, like most cheap computer speakers, LM1875 in single supply mode. If it has burnt the IC's a few times, check the speaker coils themselves arent shorted.

 

[BWRX]

The chip used in my cannibalized ACS90's is the 16pin TA8229K.

http://www.ortodoxism.ro/datasheets/toshiba/1160.pdf

The other IC on the board is labeled K1A324P and is a 14 pin DIP package. That's a generic LF/LM324 quad op amp.

 

[wakwakni]

i open my altec lansing speakers.. the ic is LM324 and TA8248k its also broken.. 🙁