Convergence Magnets source?

johnvv

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There was a thread that discussed this a bit a month or so ago but I cannot find it. Thought I had bookmarked it...

Does anyone have a source, other than old monitors, for convergence magnets?

These are the adhesive cardboard strips often found on the back of the monitor that have magnetic strips in them. The are used to 'fine tune' convergence on monitors. I've found they really help get the vector monitors looking nice.

I think the other thread mentioned visiting a local TV repair shop, which I will do. The desire in getting new ones is to have better adhesive on them. Making them by hand doesn't seem to be realistic as magnetic material in them is simply thin magnetic material strips alternating in north-south alignment but of unknown strength.
 
after reading the same post, i too went on a quest looking for them, to no avail. will try again but i dont have as much hope. anyone know of anywhere online?
 
I bet you could cut strips of refrigerator magnets and it would do the same thing. You know, the thin ones the size of a business card.
 
From what I've seen, they are not magnets, simply pieces of metal encased by a plastic strip. Some tubes do actually have flexible (think fridge magnets) cut in V-shapes that are stuck to the tube but they're the rare case. A piece of tinfoil glued to a piece of posterboard will work just fine to bend the deflection if needed when you don't have the original stips. Stick your screwdriver between the yoke and tube and you'll see the same reaction.

If you really do mean the flexible magnet pieces, then take promo fridge magnets and apply some good glue to them and they will work fine.
 
Go on craiglist - look for free computer monitors, tvs, etc. Drive down street and start collecting. I could have picked up several tvs around here lately, but all huge ones. Seen a few CRT monitors as well.
 
A piece of tinfoil glued to a piece of posterboard will work just fine to bend the deflection if needed when you don't have the original stips. Stick your screwdriver between the yoke and tube and you'll see the same reaction.

I could be wrong, but you would have to find iron or steel foil; tin or aluminum foil is not magnetic, and does not provide the interference needed.

EDIT: Looks like I AM wrong:

From http://wiki.answers.com/Q/Is_aluminum_magnetic
This is not always true. The aluminum can will behave as if it is magnetic when subjected to a moving magnetic field. This is because of Lenz's Law and eddy currents that are generated in the aluminum from the magnetic field.
For example, an aluminum pie plate and aluminum clothesline pulley can spin in a spinning magnetic field. See my movie of this effect and more at http://www.youtube.com/watch?v=Qp8-xWAN11Y For another example; a heavy neodymium magnet dropped into an aluminum pipe will cause the magnet to slow down considerably. See http://www.youtube.com/watch?v=a5BtjZWkua0
 
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