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Sounds like screen voltage has exceeded much. Its LOT adjustments should be checked. Contact any service technician.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Hi,
Since sound is ok but there is no picture, you should try the following:
1) check whether brightness & contrast controls are adjusted properly. If necessary increase level of these controls.
2) If brightness & contrast are ok and even then there is no picture then most probably, there is fault in the horizontal supply circuitry which drives picture tube and is responsible for picture to appear on the screen. you will have to take the TV to service center.
Good luck and Good day.
Rating the solution is appreciated please.
u might want to try and put a coffee filter over your flash when you take pictures to make the flash less bright. it sounds really silly but it actually works.
When you replaced the flyback the new flyback is shipped with the screen and focus controls set at minimum. These are the 2 controls on the flyback itself. Turn the set on and let it warm up a minute, then slowly turn up the screen (bottom) control with a small flat-head screwdriver. When the picture is around normal brightness, adjust the focus (top) control until the picture is nice and sharp. Then, turn the brightness and contrast all the way down and set the screen control until you can just see the picture, just above the point where the picture vanishes. Reset the brightness and contrast settings and your picture will be back to perfect.
Sounds like you've got a vertical deflection problem causing the shrunk picture and finally a solid bright line. As to the loss in brightness you may be losing screen voltage to your picture tube.
Probably it is time to shop for a new tv since cost of repairs may be too much.
Stargazer
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