Hello.
I have question, that might be kind of strange.
I do have an old crt tv with working buy cracking and falling apart static convergence rings/purity rings. And i have fairly new set of rings from a crt pc monitor.
My tv have 8 rings setup and was produced domesticaly in Poland in the 80's, so the entire crt is a little bit unique (Polkolor A56-701X they were produced mostly for export by the way) comparing to the outside world constructions. But non the less, crt should work on the same principle, regardless of being socialist or capitalist product.
However the ring assembly from that pc monitor have only 6 rings and is quite a bit shorter, rings themselves are thinner
The question is:
Can i use 6 ring assembly in place of old 8 ring assembly? Or should i look for 8 ring assembly?
How to find the good focal point to install different kind of assembly if possible?
Neck diameter is the same by the way.
Those rings falling apart is a common problem for over 20 years old polish crts, but i have a fairly fresh tube and i would like to save this tv, because they were fairly common when i was small, and sentimantal value is quite high for me. Also they are getting quite rare , because it is the lowest spec model that were produced, which people were commonly throwing out, or "upgrading" with extra modules (remote controll from other domestic tv models and so on) not so long ago.
edit************************************
Since i have another ring assembly core from identical crt of a died tv, kind of brittle plastic but otherwise ok. There is also the option of replacing all rings on 8 rings assembly with 8 new rings from two 6 rings assemblies. They would be different thickness but with the shims included in those 6 rings assemblies overal length of a 8 ring setup could be fairly close to the oryginal one. I have no idea about magnetic poles and field strength though.