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OK well you would have to take off the back panel and volt test everything up to the black light arrayOK well you would have to take off the back panel and volt test everything up to the black light array
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I think an LED problem is more likely. The LED strips are usually powered by a driver circuit on the power supply board. You can check this with a bright flashlight shining on the front of the display at about a 20° angle from parallel to the display. If you can see the picture or the menu with the flashlight beam during the "dark" period, the problem is NOT likely to be the T-Con board.
You can also look at the back of the set with the cover removed - most sets have a number of vent holes in the back plate through which the backlight can be seen when it is on. If these holes go dark when the TV goes black, the backlight is being turned off.
When the screen is lit, take a picture quickly and look for dark spots. Maybe one of the LEDs has a partial short that shuts down the LED power and triggers a retry cycle. If so, after a while it will burn out and then the entire LED strip will be inoperative.
Hi Colton...This model TV had a high level of backlight failure and I'd give you a 95% chance of the backlight strips being bad, what generally happens is some of the lamps short and it drives up the current, the over current section of the power board inverter section shuts down, this is why you see a picture for a few seconds when you power the set on. New lamps should fix it, there isn't a simple way to test the inverter unless you have some higher end test gear and the electrical engineering knowledge to figure what the draw should be and compare it to the draw you see, to complicate matters it's the negative side of the inverter that's regulated not the hot side, also a signal comes from the main telling the inverter to turn on and that can cause backlight issues but like I said with the past history of backlight failure on this model chances are really good your backlights are bad...Hope this helps
Check whether the back-light start voltage [control voltage] comes to the backlight inverter section of the power board; from the main board. It sounds that that voltage does not come from the main board, after the firmware has been loaded up. If so the main board will have the fault. Contact any service technician.
Sounds like you have a backlight problem. To verify this, turn on the set and dim the lights in the room. Take a bright flashlight and shine it on the screen. If you see a faint picture, you either have a back inverter or a bad backlight bulb.
It could be your LCD backlight giving you problems. With the computer on and the monitor power LED green shine a flashlight in the lower left hand corner of your screen. Look for the ?Start? button, if your backlight is not working you?ll see a faint ?start? button if you look closely. If you do see the ?Start? button then either your backlight tube is bad or more often the inverter board is bad.
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I want to fix it myself not take it in for repair
OK well you would have to take off the back panel and volt test everything up to the black light array
any Idea where I could get a schematic to know all of the voltages
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