My grandson was playing with a magnet and touched the TV with it and these colorful squiggly lines were going across the screen.
2007-09-09 00:13:34 · 7 answers · asked by Pamela T 2 in Consumer Electronics ➔ TVs
You can safely ignore the first four answers which seem to be competing for idiot answer of the year !!
Facts are .
A magnet no matter how strong will not damage a CRT, By switching the set off at the wall and leaving off for 20 mins will force the sets auto degauss to operate and the TV will be back to normal in no time.
Fact for typofid , Xray machines and CRT s are nothing remotely alike no matter what you read in How stuff works !!!
Cheers Pete
2007-09-09 01:24:14 · answer #1 · answered by Realist 2006 6 · 0⤊ 2⤋
A TV contains a cathode ray, which launches electrons at a screen. There is a '<' shaped tube in the back of the set, with the electrons at the narrow part, which also contains a hefty electro-magnet that deflects the electrons, so that the hit the screen sequentially (this is the 65 MhZ) refresh rate, or whatever of your tv. There is also a spec for the number of lines which varies between countries.
If you put a magnet near a set, it will deflect the electrons, giving you the squiggly lines but it will not do any permanent damage.
Yes, X-ray machines in hospitals work on the same principle.
2007-09-09 00:26:55 · answer #2 · answered by typoifd 3 · 1⤊ 0⤋
Good question...
The magnet would have to warp the shadow mask. A small magnet would not damage the shadow mask.
The good news is... the shadow mask has a small magnetic charge left by the magnet > the charge deflects the electrons slightly, and they contact the wrong phosphor color on the front screen.
Solution: Turn the TV On and Off over the next week. If it doesn't clear up, call some TV shops and ask them how much they would charge to degauss a TV.
Degauss means demagetize. They have a special coil they wave over the TV.
Robert
Countryguy
2007-09-09 02:39:08 · answer #3 · answered by countryguy 4 · 0⤊ 0⤋
Realist 2000's answer is complete BS. If what he says is true; why the hell are speakers magnetically shielded? So, you can place them next to your TV. If they weren't the magnets in the speakers would surely mess up your CRT.
2007-09-09 04:41:42 · answer #4 · answered by mrhan1 3 · 0⤊ 0⤋
Any device that has information on it that is arranged magnetically can be disturbed or even erased by a magnet. Video tapes, Hard drives, cassettes, and etc...
2007-09-09 00:22:24 · answer #5 · answered by djm749 6 · 1⤊ 0⤋
yep it can, i know from experiance. As for how long depends on the strength of the magnet.
2007-09-09 00:18:46 · answer #6 · answered by Anonymous · 1⤊ 0⤋
Seconds!! It damages the tube.
2007-09-09 00:19:00 · answer #7 · answered by Sal*UK 7 · 1⤊ 0⤋