Quoted from snyper2099:
No such thing as a model k7000... K7000 is a "SERIES" of monitors... The MODEL is like this: k7700, k7800, k7900... you see? Common mistake, carry on.
Again, it will help you tremendously to identify what model you are dealing with by using the link in my above post.
This issue with this is his chassis is not in the link above. While i understand k7000 is a "general" term for that series of monitor/chassis, everyone in the industry uses the term k7000 to refer to that particular series because all k7000s are the same, the term k7000 covers the 70xx, 71xx, 76xx, 78xx, 79xx. Perfect example of this is if you go to order a cap kit for a k7000 chassis, it will be listed just as that, it most likely will not be listed as a k7900 cap kit (possible might list both). See Link
k7000 is also a different chassis completely then the ones talked about in the link to klov. I am guessing his particular chassis is a k7191 which if i remember correctly is the common 25" version, it could also be the k7000A which is identical to pretty much all the other k7000 generation with the exception of the oddball flyback, it actually would help knowing if it was a k7000A due to those flybacks no longer be available so he wont beable to replace it if needed. All K7000 chassis that i have come across (both 19" and 25") have been identical/interchangeable parts wise with the exception of the k7000A flyback.
OP dont touch the yoke while the monitor is on, while i have never tried it, i do believe the copper can shock you. It sounds like it loosened and perhaps slid down the neck a little. With the monitor off see if you can loosen the screw a little and slid it towards the front of the cab.