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Yeah, you've at least got horizontal and vertical sweep now. It'd be interesting to see if your supply voltages came down closer to spec, now. From here it looks like you don't have horizontal lock, so that may be all that's keeping you from getting a stable picture at this point. Hard to say about the pop noise. Sometimes a control can arc if the riveted terminals are making poor contact with the resistance element, or the wiper itself could have poor contact. Does the brightness control appear to be working correctly now?
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