Please Help me out with this issue.
I do have very little knowledge about speakers and amplifier systems.
I own Altec Lansing AVS-300B 2.1 Channel multimedia speaker system.
2 satellite are of 3.5 watts each and subwoofer is of 10W (Total 17W)
Since last two months i am getting popping sound coming out from sub-woofer.
(Only sub-woofer--both satellites are working absolutely fine)
Thats not motor-boating sound i think but a non-periodic popping sound.
Popping sound comes out even if there is no audio input (Only speaker power ON) This sound is random and it's intensity increases if i raise the sub-woofer volume.
Since last 15 days sub-woofer volume control knob has stopped working.
So i replaced 3-pin 10K Ohm pot-meter with new one. But that new pot-meter is also not working. Volume of sub-woofer remains at max always.Hence loud popping sound comes out.
All capacitors on PCB are looking fine.
Input voltage is 18VDC-650mA....Input supply is regulated 17.91VDC precisely.
I have disconnected sub-woofer speaker wires and using only satellite speakers to get rid of annoying popping sound.
I am attaching images of speakers and PCB. Kindly suggest me a solution to get rid of this popping sound.
PCB has following ICs on it:
TDA-2007A (Quantity 1)
MC-4558 (Quantity 1)
Transistors (Quantity 3)
FET (Quantity 1)
I do have very little knowledge about speakers and amplifier systems.
I own Altec Lansing AVS-300B 2.1 Channel multimedia speaker system.
2 satellite are of 3.5 watts each and subwoofer is of 10W (Total 17W)
Since last two months i am getting popping sound coming out from sub-woofer.
(Only sub-woofer--both satellites are working absolutely fine)
Thats not motor-boating sound i think but a non-periodic popping sound.
Popping sound comes out even if there is no audio input (Only speaker power ON) This sound is random and it's intensity increases if i raise the sub-woofer volume.
Since last 15 days sub-woofer volume control knob has stopped working.
So i replaced 3-pin 10K Ohm pot-meter with new one. But that new pot-meter is also not working. Volume of sub-woofer remains at max always.Hence loud popping sound comes out.
All capacitors on PCB are looking fine.
Input voltage is 18VDC-650mA....Input supply is regulated 17.91VDC precisely.
I have disconnected sub-woofer speaker wires and using only satellite speakers to get rid of annoying popping sound.
I am attaching images of speakers and PCB. Kindly suggest me a solution to get rid of this popping sound.
PCB has following ICs on it:
TDA-2007A (Quantity 1)
MC-4558 (Quantity 1)
Transistors (Quantity 3)
FET (Quantity 1)
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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