What saves a crt monitor from 'burn in' when it is not in use?

Answer

Modern CRTs use a layer of aluminum behind the phosphor to protect against burn-in. A cheap and easy method to prevent burn-in is to use a screensaver so that pixels are not left on for too long.
Q&A Related to "What saves a crt monitor from 'burn in' when..."
There is no way. The phosphorous coating on the inside of the screen is burnt. It CANNOT be repaired. You would need a new CRT tube and to have it replaced would cost what 2 LCD monitors
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The power required to run an LCD is about one-third of that required for a CRT with the same screen area. In addition, the amount of heat generated by an LCD monitor is considerably
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Alright, lets assume you get a cheap CRT for $50.00, a comparable LCD for $90.00, and a LED for $120.00. The energy use for the CRT is much greater than the other two, The LED generally
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CRT monitors will be somewhere in the neighborhood of 70 watts, whereas LCD monitors will be somewhere in the neighborhood of 35 watts. At the end of the day this is not much electricity
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