Meanwhile, I decided to play around with the set's twin brother that I have. It's a newer model, ES415W, which shows to be a CTC-53 chassis, with the 18VDBP22 picture tube. I saw a date inside of 1973 on one of the components, meaning this set must have been one of the last tube sets RCA made. Weird thing is that it's not a Mural set.
Physically, VERY close in appearance to the other set. Makes a nice picture, too....after cleaning dirty pots and just letting it run. Now, I just have to figure out how to adjust the horizontal centering......
My only complaint about these sets is that they take FOREVER to warm up and produce a picture. The sound comes on after about 10 seconds, then it takes so long to see anything on the screen, you'd swear you lost HV
