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| Thread ID: 76273 | 2007-01-27 05:57:00 | Pro's & Con's of LCD Vs CRT monitors. | Gordon62 (11771) | Press F1 |
| Post ID | Timestamp | Content | User | ||
| 519635 | 2007-01-28 07:11:00 | I would not go back to a CRT screen, though our cat would - she can't sit on top of a warm LCD. | decibel (11645) | ||
| 519636 | 2007-01-28 07:12:00 | Its probably due to the magnetic device at the back of TV's. Periodically, TV's need to completely de-gauss or de-magnetize, not sure why. Most people don't have to bother because they either turn the TV off at night or when they go away for a couple of days but you might have needed to purposely do it. A CRT has a metallic shadow mask inside that ensures that each colour gun only illiminates the phosphor colour on the screen for that gun and no other, it and the surrounding metal needs to be kept free of any residual magnetism. At a "cold" power-up, a brief surge of 50 Hz mains power is applied to a coil that runs around the perimeter of the picture tube, and then quickly tapers off, removing any residual magnetism in the shadow mask or surrounding metal. This will not happen with a warm restart as the varistor needs to be cold to conduct the power for the degaussing coil momentary operation. |
godfather (25) | ||
| 519637 | 2007-01-28 09:41:00 | A CRT has a metallic shadow mask inside that ensures that each colour gun only illiminates the phosphor colour on the screen for that gun and no other, it and the surrounding metal needs to be kept free of any residual magnetism. At a "cold" power-up, a brief surge of 50 Hz mains power is applied to a coil that runs around the perimeter of the picture tube, and then quickly tapers off, removing any residual magnetism in the shadow mask or surrounding metal. This will not happen with a warm restart as the varistor needs to be cold to conduct the power for the degaussing coil momentary operation. first time i read this i couldn't understand a thing :waughh: but i read it again..made some sense.. so the degaussing thing is only performed when "cold" power up for TV while CRT monitors you can choose to do it in its menu items.. so doesn't that mean i didn't have to leave my TV unplugged for a whole night i just needed to pull power plug out..plug back in then it would've degaussed itself?? ohwelz..getting OT.. |
heni72847 (1166) | ||
| 519638 | 2007-01-28 09:52:00 | Takes a while for the varistor to cool down. | godfather (25) | ||
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