Hallicrafters T-506 scored

[bandersen]

Interesting. My first thought was to do exactly what you've already tried. Do you suppose it's the coil form material that's absorbing the moisture ? Does tweaking the tuning cap help ?

No, my set hasn't shown this problem. However, I haven't played it all that much and it's been pretty dry lately. I'll have it all back together in a few days and will fire it up occasionally to see how it's playing. Summer is coming and it can get really humid around these parts. If it's going to be an issue, I expect it will show up in a few months.