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Hello my friend...first let me thank you for all the time and information you've shared with me both on and off the forum regarding these and other projects. My frustrations with these TVs gets to a point where I move onto another unrestored set putting the previous one on hold.
The RCA with the alignment issue is currently moved off the bench waiting for more attention. It has a terrific picture despite some ambiguity in how well it's aligned. The first 2 traces I needed to see adjusted by setting the T-3 transformer were good. I got them adjusted perfectly. Then I moved onto the trap adjustments using a potentiometer in a tube socket to change the bias and used an RCA VTVM to adjust minimum and maximum voltages across resistor 119. That's where things started to become problematic for me. I couldn't understand what the VTVM was doing and what it was indicating. I got up to the point where I was clamping resistors across the terminals on the bottom of the traps and that's when I gave up. Because the picture was so sharp and good, I thought it was best to leave it alone and get back to it another time. The remaining issue (besides an ambiguously aligned RF/IF section) was sound that was not aligned with the tuner. So that's where it is at this point. I don't know if I want to go back to square one with the alignment process or shortcut to getting the sound aligned with the correct channel and use it as is. I think my indecision with what to do next has somewhat to do with how much effort you spent trying to guide me through doing it right and understanding what was going on in this particularly difficult TV to align. I want to do it right but I think the part about understanding the resonances and overall relationship between different parts of the IF sections is probably beyond my understanding right now. I'm pretty intimidated by the whole thing especially since the alignment steps are pretty mechanical and I don't know why things didn't go 1-2-3. So that's the current status. I will probably go back to the scope and sweep generator (another detour during the process...all working now) and start from the beginning.
As for the bent picture/magnetized cone theory on the KCS47, the end of the thread suggested this was a normal side effect of the shape of the cone and front of the tube so I didn't proceed with any demagnetizing efforts. The chassis that's the topic of this thread is the original that was in the TV so my efforts are to get it restored, put it in service and see if there are any improvements. I know that probably doesn't make any sense if the cone is indeed magnetized but I really don't want to get into removing the tube from the cabinet which would be necessary to do a demagnetizing protocol properly. So I'm stuck right now and don't know how to proceed. The short term plan is to finish the chassis restoration and go from there.
So that's the story as it stands. Again, thank you for how much time, thought and expertise you have generously provided. I've been trying my best to get these things right but there's so much all of you experts know and say in giving advice and counsel that's everyday language for you but goes right over my head. Reality is, I'm not much more than a part replacer who hopes for the best when finished. I want to know more and I have many textbooks on the topic. The only thing I don't have is time. I have a full time day job and I teach today's clueless and entitled youth biology 2 nights a week at a university nearby. At 65, I thought I'd have more time but......
Again, thank's so much for thinking of me and the projects.
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