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| Guest |
 Posted: Thu Dec 15, 2005 12:11 am Post subject: Re: Failing CRT symptoms |
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| jb38 wrote: |
It can manifest itself in various ways, but the most common is for the picture to have lost its brilliance, this happening over a period of time, maybe about six months or more, and also the contrast to be poor with a washed out looking picture, and any attempt to increase the brilliance level usually results in a still dull, but blurred picture.
The above is caused by low emmision of the CR tubes drive guns. In the past a booster transformer was fitted to overvolt the filaments (heaters) which overcame the low emmision problem (for a while anyway), but this is not really done so much nowadays. |
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| jb38 |
| Posted: Thu Dec 15, 2005 12:09 am Post subject: Failing CRT symptoms |
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It can manifest itself in various ways, but the most common is for the picture to have lost its brilliance, this happening over a period of time, maybe about six months or more, and also the contrast to be poor with a washed out looking picture, and any attempt to increase the brilliance level usually results in a still dull, but blurred picture.
The above is caused by low emmision of the tubs drive guns. In the past a booster transformer was fitted to overvolt the filaments (heaters) which overcame the low emmision problem (for a while anyway), but this is not really done so much nowadays. |
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| vince |
| Posted: Mon Dec 12, 2005 1:36 pm Post subject: What are the symptoms of a failing Cathode Ray Tube or parts |
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| I have a 60" Philips rear projection television with problems noted on this site on the 10th of this month. Anyone know what happens when the CRT or any of it's components fail? |
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