I am looking at my brothers TV he has a Sony Bravia KDL-52S4100 it has no sound or picture. When the power button is depressed the light located under the panel turns green. I removed the back and immediately checked the power supply for bad caps. There were none. I then proceeded to check all of the output voltages on the power supply. They were not perfect, but very close to nominal.
I then removed CON3 from the power supply which connects to the main board and the back light illuminated. I think there might be a problem with the main board. I have checked to just try to purchase a main board (48.71H01.31), there are none to be found. I assume this must be a huge problem for this model.
If you have any ideas on where I should start troubleshooting on the main board I would like to hear them.
I'm looking for my digital camera once I find it I will take better pictures of the boards that in question.
I then removed CON3 from the power supply which connects to the main board and the back light illuminated. I think there might be a problem with the main board. I have checked to just try to purchase a main board (48.71H01.31), there are none to be found. I assume this must be a huge problem for this model.
If you have any ideas on where I should start troubleshooting on the main board I would like to hear them.
I'm looking for my digital camera once I find it I will take better pictures of the boards that in question.
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