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OK, back home and had a little time last night to play. I think where I went wrong with the 21FAP4 was that I didn't check which pin they were using for G2. On the 21EAP4 you can use either as both are connected to G2. I assumed (and we know what that makes me!) that they used pin 2 on the CRT socket but in fact they used pin 6. So a straight wire swap won't work, one needs physically move the wire to pin 2.
So, what I did was remove the two rivets that hold the disc that keeps the contacts in place in the socket. Now I can mix and match locations at will. I have some #4 brass bolts that fit nicely to put it back together. Sadly, real life prevents me from doing it today but I will tomorrow.
Some related questions: The last time I tested the FAP4 I just had it loose, no holder on it. How stupid is that? I was reading that part of the holders job is to prevent flying shards in case of an implosion. I was wearing eye protection and did drape a towel over it when moving it around. Since I am pretty sure the tube is good, I was thinking of putting the holder from my 21EAP4 on it but the idea of doing that puckers me up. How does one tension it correctly so that expansion and contraction don't make it go boom? There is the perimeter strap and the two straps that go around the back. Which order should I attach the straps? Any tips on this would be much appreciated.
I really appreciated the patience and help guys. I know I'm a little thick but I really am trying to learn how it all works.
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