On the hunt for new flyback for RCA CTC-7.
Latest from Mike on the restoration of Ed Reitan's CTC-7 Worthington.
https://visions4netjournal.com/2017/...-page-three-a/
"Bad news. When I removed the cage and was able to see where the centering control is, I noticed that someone had been there “before me”. The capacitors that are related to this problem have been changed and the Horizontal centering control is good. I also now, have a good explanation as to why the control was responding as it was. The C1 Winding on the Flyback transformer is OPEN. In the pictures it is the Second winding DOWN as you look at the center of the photo. I was able to tug gently on the insulation of the second wire down and with NO EFFORT AT ALL, the insulation came off and the broken wire was exposed. This wire is only a bit bigger than a human hair. Please find photo. You can see the newly replaced big orange capacitors where someone has been before me. I was able to scrape (with a small razor knife) The oxidation from the wires on one side. I could not get to the other side without fear of the wires completely falling apart so I had to be careful. I tinned the wires with my soldering iron and then carefully lapped them together to re-establish the connection. I had to put on my “Big Boy ” glasses to see this well enough to do the repair. You can see the repaired wire in the third photo LONG story SHORT is this set needs a new flyback transformer. The RCA part number according to the Sams Photofact is 106359 and the 4th photo is a good shot of the flyback transformer for reference. I will fire this set up again tomorrow and see if the control is working properly. This will be done with the cage removed so I can’t leave it on for long that way because of the way it sits on the bench. It gets support from the cage being there and with the cage removed it is very unstable on the bench. . But at least I can determine if the control is working properly and then I can continue with my modifications of the cage for the installation of a fan and increased ventilation. I can guarantee that the life of this flayback transformer is very limited. There is corrosion on the fine small wires where they go in to the transformer. This is no doubt due to heat from hours of use over the years.
Regards, Mike
Author:
Hi Mike,
Wow! Talk about delicate surgery! Excellent shots. I know you worked hard to show this detail in photography and even harder to make sure the whole thing did not collapse. Thank you. On the hunt for a new flyback. If it’s okay with you, I think the chassis should stay with you until we find a new flyback.
Marshall"
If anyone can lead us to finding a replacement would be greatly appreciated. Thanks.