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phillips has the same problem but if your tv actually turns on it could be a short or just a fuse sonys a better tv than phillips should be an easy fix call a repir guy going price for that problem is 75.00 dont pay any more than that. the economy is bad everyone needs the work be smart. make sure if you say yes to the work that the repair guy will waive the consultaion cost of usually 35 to 75 dollars, if you chose to have the work done.
make sure put the lamp door back before trying to turn it on because they have switches on them that allow the tv to turn on. If that is ok you probably have a bad ballast. Call a local tv repair shop to further diagnose the problem.
pls. cheks your tv main supplay pin is proper canacted.
IF ok .
then problum is inside of the tv set.
check EHT out put voltage pin Diode /ragistance/ capeceter is filed.
any out put voltage from EHT is Droping. then TV is swithed off by itself
I am happy to assist you. If I am not mistaked about your model, I know of a fix for some models and that for sure. According to your description, I know of this descripition and if it fits the fix I know about then I am sure to tell you the problem.
You have to take the back off the set (UNPLUG TV) and look on the neck of the picture tube on the circuit board there is a resistor (do research on what a resistor is on the net) that opens up and it is a 10 ohm resistor and the color code is brown black black. It is about half inch long with wire coming out both sided sitting straight up position from the circuit board. Can be measured with an ohm meter. You can get 5 of them for a dollar at Radio Shack and it must be soldered in after taking the old one out being careful not to break the printed circuit.
Your symptom should be also getting brighter and brighter and then shutting off.
A few weeks ago my set started flashing to a black screen. Now a couple of weeks later, i have no picture, but the set turns on and i have sound. The standby light is flashing. I purchased the set in 2000 so it is seven years old. This is the first problem. Could it be all three of the bulbs?
Could it be all three of the bulbs?
as you say that sound is ok that means your power supply &high voltage section is ok.
please check chroma ic luminance section or system control section stand by ckt