Chosen Solution
When powering on my vu 32 inch full hd led TV (model- 32d6545) backlight flashes only once and thereafter the screen goes black with sound only. I checked the voltage on led supply pin. When I power on the TV and the “VU” logo appears, the voltage is 76 volts but just after that the logo dissappears and voltage drops to 44 volts. What is the reason?
Ajay Kumar Tiwari since you still show power on the LED lines when it turns off it does sound like an issue with either the main board or the power board. We need to see your boards to determine which line is the enable backlight connection. Post some good images of your boards with your question so we can see what you see. For now I would approach it with measuring the backlight enable then check the main board then power board. Adding images to an existing question
