abefroeman said:
The NAD 7155 came today. Ebay is a great invention. It sounds great and plays louder than I need it to. It does crackle a bit when changing the volume, but I will make a new thread about that.
No need for a new thread on this. Oxidized contacts on the potentiometer usually cause this.
Get a small can of Caig DeoxIT spray. It comes with one of those plastic straws, similar to WD-40 cans, that lets you spray into small hard to reach areas. With the power off, use the straw to spray a small amount onto the shaft of the volume knob. Work the knob back and forth after you spray it. Give it one shot a day until enough oxidation is cleaned off to improve the crackling.
"DeoxIT is a fast-acting deoxidizing solution that cleans, preserves, lubricates and improves conductivity on all metal connectors and electical contacts. Use as a general treatment for connectors, contacts and other metal surfaces, and on non-critical metal surfaces with severe oxidation and corrosion. DeoxIT dissolves the contamination and protects the surface. Not only does DeoxIT remove corrosion but it also seals and protects all electrical connections, and reduces intermittent failures, arcing, wear, and abrasion."
It should be widely available at Radio Shack and other similar places. At Parts Express it is part #341-200 and costs $11.48.