Tv fades to black very low sound or or goes to blue & says lost siginal then goes toblank turn off set & waite a few min.& turn back on will only stay on for a few min. have to repeat.

Find the vertical IC and check for very small cracks on the solder joints of its pins and resolder (approx. 10 Pins). Also check in the same area for a 1 micro farad at 50 vdc capacitor that goes bad and replace it.

also check the power cord wire coming from the back of the tv is loose from the tv side or perfect.

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Ur tv now power on only have picture few mins,than dead,have sound only?Yes,than the 1 or 2 the long board call the LCD inverter boards are dead.The LCD inverter long boards help the LCD screen to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy 1 or 2 long LCD inverter boards for the replacement.

Your tube is failing.

awewryte,
I have the same TV and now have the identical problem that you described. Did you ever get it fixed or find out what the problem was? If so, will you please pass the information on?
Thanks.

you need to change your trigger circuit

you should first check all the cables inside the set to make sure they all are seated properly, check some other sources like a dvd player and see if it does it on a dvd, after that it is probably a defective main board