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Topic: Volume flutuating randomly? (Read 3770 times) previous topic - next topic
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Volume flutuating randomly?

The volume of my old Cambridge SoundWorks PC speakers has recently started to fluctuate at random intervals - sometimes several times within a minute, sometimes once every half-hour. It's almost certainly the subwoofer/amplifier. Can I open it up and fix it myself, and if so, how?

Volume flutuating randomly?

Reply #1 –
This could very well be a cold solder joint on the circuit board. The usual way of testing this is to heat or cool a small area of the board to see if the problem becomes worse. If you can get a can of "freeze spray" with a long thin tube attached, and give a little squirt to various places on the board while listening to music, you may find the culprit.

How are you at soldering?

Volume flutuating randomly?

Reply #2 –
Is there anything I should watch out for (i.e., capacitors)?

Volume flutuating randomly?

Reply #3 –
Check anything that is soldered, so...check everything.

Volume flutuating randomly?

Reply #4 –
I mean so that I don't get shocked.

Volume flutuating randomly?

Reply #5 –
A properly designed system won't have any dangerous voltages on the circuit board with the amplifier. Leave it unplugged while you open it up and see where the line voltage goes to, then be careful to avoid that area when it is plugged in, even if the power switch is turned off. If you are uncertain then simply don't touch any part of the circuit while it is plugged in, just squirt quick cool at it.