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Here are the latest developments. It turns out that I already had replaced those mica caps, so that rules that out. I had the brightness control working correctly for about five minutes after turning the set on while on its side this morning. Then I lost it. I thought I'd let everything cool down, and try it again but no luck. Regarding voltage readings on the sync separator tube there are differing results expected on the Sam's Photofact and the Rider's voltage charts. On the Sam's chart pin 4 should read -2.6 vdc. On the Rider's chart pin 4 should read -5.2 with the picture control set to minimum, and -9 volts with it set to maximum and depending on the noise level. I'm reading -4.6 volts and the picture control is not changing it. I'll continue trying to find a mistake I may have made along the way. Thanks for the help.
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