My tv worked great until I moved it to my son's room. After hooking it up, the picture was dim and the lettering, logos, channel #s, menu, anything with words, including the satelite menu, is blurry. After messing with the controls, I got a decent picture, but couldn't help the blurriness. Thanks....
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picture tubes harsly ever go out i have work on curtis mathis tvs from the 70s and their tubes were great most like the leads within the tubes need cleaed in order to do theis take it to you local repair sop an they can burn the filament so that they are bright again.
The Tv sounds like it has a fault. Firstly, switch tv on in a dark room and look through the back cover grills at the tube neck. If it is lit up a dim orange, the heater is ok, and the problem is either a loss of voltage to the tubes first anode (A1) or a field collapse problem ( a line across a black screen which is blanked out by the tv protection circuitry) or...it could be a black level clamping fault on the video driver chip or faulty video driver chip.
Try it again in the original room where the TV once was. If the channels from 47 and up are back to normal, its a cable signal issue that the cable company must resolve. Its possible that the installer may have driven a staple thru the coaxial cable or did not correctly attach the fittings.
Make sure the cable you now have hooked up to TV is actually hooked up to the dish. If you're sure it is then take the TV back to original location and hook it back up. If it works in that location you have a bad cable. If it still doesn't work it's the TV. The only other thing I can suggest is that some TV's must autotune before a picture can be shown. If you're sure you have a ggod signal go to the TV menu and do an auto tune or auto search. The TV will then go thru all the different possibilities looking for signals. Once it has completed the search it will then give you a picture. You can then go and add/delete channels and set it up however you want.
Did you adjust the two controls on the new flyback? The top one is almost always the focus control and the bottom is the G2/screen control (brightness) If you adjust the G2 do it until the picture looks normal, too high and you will get retrace lines through the picture.
Sounds like theres a leaky capacitor in the screen drive circuit. I have seen this problem also be a gassy crt but was able to clean off the grids of the CRT with a crt/rejuvinator. It happens because of low emmissions in the tube and when white is on thats a mix of all the colors, so the tube works harder. I bet when you whatch a movie and the scene changes suddenly to a white or brite scene the pic looks a little washed out. If this is not the case then I aggree with the Pravin and try it on another TV just to be sure .. This is not a repair for a consumer to do, though however it is only a three year old set you stated, so there should be life left in the tube, so im kinda thinking a capacitor is bad. Seek out a yechnician to check this out for you as a TV is not a place to see it you can fix it or to exoeeriment with. Good Luck