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PC Audio Altec Lansing Fans Club (approaching 90 members), Sound Leadership For The Digital Age

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stkong
post Feb 15 2011, 11:47 PM

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wow, got this Fans club ah? Only realize this club today, since i have my ACS45.1 for more than 10 years. It still serve me well with the newly upgraded x-fi Fatal1ty Pro.

however, after i have done the house keeping in my computer room and it's start give me some problem. after on the speaker, depend on its "mood" some time just work, some time just won't sound at all. if i manage to make it work (on and off few times, some time flip the control satellite upside down), it also not guarantee working for all time. It may just gone for now sound for few seconds, minutes.... then have to flip the satellite, push the cable, knocking the satellite or the woofer...

Dear all sifus here, what can happened to it? i'll try to save it as it so valuable for me since i got it during my college time.
stkong
post Feb 16 2011, 05:06 PM

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QUOTE(wongpeter @ Feb 16 2011, 12:11 PM)
sounds like a dry joint/loose connection issue esp if it starts working after you have given it a few thumps, whacks or kicks! tongue.gif
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QUOTE(power911 @ Feb 16 2011, 12:17 PM)
agree whistling.gif

if you got soldering skills... you can refresh those dry solder and it'll work
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yeah, will try it later. thanks for the information. thumbup.gif
stkong
post Feb 18 2011, 07:12 PM

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QUOTE(snowfire64 @ Feb 18 2011, 06:47 AM)
True that. The only downside of my ACS 45.1 is that the colors are slowly turning yellow with the food-dirty hands pressing it and the foots that hanging on the edge of the woofer.
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haha, mine only the control satellite is fading to yellow.... the rest still in white include the woofer, i cover the woofer by a towel and cheat my friend.....only the speaker so keng already hahaha... whistling.gif


Added on February 18, 2011, 7:15 pm
QUOTE(wongpeter @ Feb 16 2011, 12:11 PM)
sounds like a dry joint/loose connection issue esp if it starts working after you have given it a few thumps, whacks or kicks! tongue.gif
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doh.gif after open up the woofer and control satellite.... didn't found the dry solder... maybe my skill is too bad, perhaps can send to the electrician. wink.gif

This post has been edited by stkong: Feb 18 2011, 07:15 PM
stkong
post Mar 1 2011, 01:48 PM

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8 posts

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QUOTE(wongpeter @ Feb 16 2011, 12:11 PM)
sounds like a dry joint/loose connection issue esp if it starts working after you have given it a few thumps, whacks or kicks! tongue.gif
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QUOTE(power911 @ Feb 16 2011, 12:17 PM)
agree whistling.gif

if you got soldering skills... you can refresh those dry solder and it'll work
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QUOTE(stan001 @ Feb 19 2011, 12:33 PM)
I open up the satellite speakers, there is just the speaker itself with 2 push buttons for on/off & volume control and wires to left & right speakers..

You case is like my case previously... the subwoofer "sometimes" works and "sometimes" no subwoofer sound at all..

After I took a high resolution pic of the PCB front & back and posted here, bm2000 pointed out to me that the solder joint is broken on the amp chip, probably due to the fact that the chip is on the large heatsink and the large heatsink is being vibrated by the subwoofer for the past 10 years...

Anything being vibrated for long period, surely those solder joint all lose and give u intermitted connections..
Pls post yr picture here, hope bm2000 sharp eyes can help to spot the dry solder joint..
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guys, thanks for your information. Anyway, after the 1st time tried i was failed. doh.gif However, still not giving up just before send the things out for repair and give it another try on last Saturday. I tried to refresh almost all the solder points on the woofer's board, and the result if fail again. cry.gif Then i start target the satellite, open up and look so closely yet found nothing wrong. Since the tools all still on the desk and hot, just refresh the solder points too... who knows it works perfectly now.

Thank you very much for the information. U guys are the best! cool.gif cool.gif thumbup.gif thumbup.gif rclxms.gif rclxms.gif

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