Quote:
|
Originally Posted by Tubejunke
My 1958 Sylvania Electronic Products Technical Manual lists the 16RP4 as REQUIRING a single field ion trap.
|
OK you will have to do this again because the 10BP4 uses what is known as a double ion trap magnet. The name says it all. It is basically two magnets connected together. Your tube calls for a SINGLE FIELD ION TRAP. Very different and for very different reasons. I'm not good enough to get real detailed on every application of the magnets but I know FOR SURE that the 10BP4 is the wrong magnet. I am not sure if the double magnet should have given some kind of raster or what. The specs for the double magnet are 35 Gausses which is the strength for the 16RP4. So the magnetic force is the same. However the single field strength is much more concentrated on the beam at only one point. The double spreads the force across a much broader area. I would say that if one were suitable for replacement of the other then there would never have been two types.
I would definitly try the correct magnet. Position the magnet almost directly over the first gap from the base (socket) of the gun. Rotate 360 deg. If all is well you should see something. Now if one of your sweep circuits is not working then it will be a bit harder to see what may just be a line.
This set from your description should work and this really sounds like an issue worth looking into.
Good luck....