Question about Projection Televisions

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Blurry picture solution.

Please explain how changing the CRT cooling fluid will make the picture clearer. Is the light sent through the fluid or something such as that???

Thanks for your help.

Gary

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Yes the coolant sits in a chamber which is attached to the face of the picture tube, and the image has to pass through that coolant. and eventually the coolant gets a algae type growth in it and gets congealed and brown and the resulting picture will get dim and wont focus and colors will be affected and you can even get glowing halos around objects. The green and blue colors are the first affected red takes longer.

Posted on Aug 07, 2008

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Lack of cool tones,seems to have pink tint where itshould be white? just got this tv from a friend today,trying to figure out best way to correct picture


Check the CRT fluid in the blue and green CRTs. It should be clear. These sets have problems with the fluid getting cloudy and hence letting less light through. It also gives it a dull picture look. If the fluid is cloudy, you will have to remove the CRT and replace the fluid. Then re-align the CRT via the convergence in the service menu.

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If your unit is older it most likely needs the lenses, mirror and screen cleaned properly. As far as changing the water, the unit does have a special coolant between the lense and the CRT face to help cool them, but the system is sealed and should never need changed unless there is a serious problem.

I have a tip at http://www.fixya.com/support/r4690955-clean_lense_screen_in_projection_tv which explains the cleaning procedure and should be helpful to get through the cleaning process.

Thanks for using FixYa and for the great rating.

hardrocko

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1 Answer

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1 Answer

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sounds like it is probably worth trying to degauss check this excellent site; http://woil.ws/fixmonitor/ for details of how to try this on the cheap - it works If it doesnt solve your problem, the fact that you are getting different quality from different crt s suggests that they could be the root cause - see if you can get the part number, and get a price you may find it is cheap enough to be worth trying - check also the power supply - poor voltage output can sometimes cause these type of symptoms. Hope this helps, if not post again - some of the other guys know tvs much better than me :)

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