Having problems with your Dell Dimension 3000® Pentium® 4 2.8GHz, 256MB, 80GB, 48x CD-RW PC Desktop ?

CRACKLES / STATIC WHEN TRYING TO ADJUST VOLUME LEVEL. INTERNAL KNOB CONNECTIONS BAD OR IS ENTIRE UNIT INSIDE BAD?


Answers :

This usually a result of contaminants (dirt / dust) in the volume control. You might be able to clear it by rotating the knob fully clockwise and then fully counter-clockwise (with no power - otherwise it will get very loud and distorted). Sometimes, the mechanical wiping of the control when twisted left and right in this manner will dislodge the noise-causing dirt.

If it does not work completely, or if the noise returns, you could try spraying an aerosol "electrical contact cleaner" on the control. Test spray on a q-tip and dab a small amount on the back of the enclosure to make sure the solvents do not attack the material (some plastics have adverse reactions to solvents). If the enclosure looks ok after a couple of minutes, gently pry the knob off the control (if a type that can be slipped off) and direct a spray along the shaft where it enters the enclosure (again, with the power off). Twist the shaft left and right while spraying. The combination of the spray and wiping action of the control should remove the noise causing dirt.

A spray lasting 5 seconds or so should be enough - but if after testing for noise and it is still present, try again.
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