I've been watching this Zenith on the work bench occasionally over the summer and it's been performing flawlessly. Today I decided to remove the chassis from the front cabinet to remove some dust bunnies before putting the back cover on, no big deal I thought. After reassembly I'm now noticing subtle moire in some solid colored areas. Seems to vary with picture content and sometimes I hardly notice it. In particular cartoons bring it out. First thought was did the degaussing PTC thermistor coincidentally die? I don't think I'm hearing the coil ping when I power on, but I'm not absolutely sure. I tried manually degaussing with my GC coil but that was no help. Anyone have any ideas? Picture attached emphasizes what I"m seeing in the green background. There's a horizontal shading or striping, somewhat with a stationary wave, and mostly in solid color areas.
