Just recently, whenever I first turn on the TV, although the picture is initially fine, it shortly become too light. It's as if I turned the brightness way up. At the same time, faint lines appear in the backround. After several hours, the picture darkens, and I can get it almost normal if I play with the contrast. However, when I turn the TV off and it is several hours until I re-turn it on, the problem starts again. Any suggestions would be appreciated. I have not yet called a repairman since I would like to have an idea of the problem first. Color and everything else is fine.
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Not long ago I had my head inside one of those units,I was looking for something else but I did notice and repaired many loose conections and believe you have the same ,your problem is related to the screen voltage and a loose conection might be around the high voltage transformer.Please let Us know how it goes or if you need more information.
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Hope this is an LCD TV. If it is, show a torch light from a distance and see whether the picture can be seen. If yes, the backlight has gone bad. If no, try changing the input device to something you know works. If nothing works, this is a case for a qualified service technician.
I too have a red "short" light on my Tristar booster. However- I've illiminated the Tristar as I unplugged it and connected my tv directly to the 13amp mains and b) connected the aerial directly to the aerial wall socket which is separately boosted from a distribution amplifier box in the loft. Picture was U/S so the "short" is probably in my cabling in the loft (I've been moving the aerial about lately).Hence I suggest initially to unplug the Tristar and check the fault is not back further up the line ie the cable and booster at top of house. Hope that all makes sense.ps before noticing the red "fault" light, my picture had gone to pot.
If you haven't replaced the lamp, it is almost certainly time to change it. A weak lamp will cause the TV to play for a short time. As the old weak lamp heats up, it draws more current, and the reflector in the lamp, having become cloudy over time, converts the light into more heat rather than reflected it out into the set. Eventually the lamp draws too much current and the set turns it off, going into a restart cycle. Buy an original Sony lamp, as the aftermarket replacement lamps are known trouble makers. Be sure to rate this solution. Thanks!
Symptoms are not related,what you hear is the high voltage turning on and that is normal if it only does it for less than a second,the grainy picture might be intermitant,dont turn it off,when the picture is grainy tap the side of the set to see if it racts and if it does you know you have a loose conection.This could be outside because of a loose ground on tha cable or inside in the tuner.