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Main board is bad since it works with both video and audio. Ur backlights are ok so that omits the inverter board. And the T con board is for video only - since you have hassles with audio and video that leaves the main board. Do not think it is the power supply since your inverter board is powering up the back lights.
The display microprocessor(computer within your unit) may be bad. This IC is responsible for processing any and all IR(infra red) commands from the remote, as well as scanning all the push buttons on the front of the unit. If you're interested in having your unit repair, please visit me website at audioserviceclinic.com. You may contact me there. Thank you.
These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
Shut it down by holding the power button until the screen goes black, don't tap the power off button, wait for the black screen. Then let your phone charge for a few hours (maybe over night) with power off and see if that helps.
It is the boot rom menu for the device. Just power it off then back on. IF it comes back then your OS on your phone is toast.It means your phone is in recovery mode. Hold down the volume up and power button at the same time, then select the option to reboot by going up or down with the volume keys and pressing the power button to confirm your selection.
wont turn on red light just flashes? On my samsung flat screen tv when you are watching the televison there is no red light on the power button but when you turn the television off the red light stays on all the time? what can I do to turn this light off?