Those 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.
https://homenol.blogspot.com/
https://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, [Exclude the model number] in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
SOURCE: samsung tv LE32R74BD standby light on but wont turn on
samsung tv le32r74bd had tv on standby and wont turn on,it is stuck on standby please can you solve this
SOURCE: samsung tv LE32R74BD standby light on but wont turn on
samasung standby on all the time wont switch on to tv
SOURCE: samsung model # HLP5063WX/XAA 3 lights blinking
It can be the Lamp Ballast as well as the Color Wheel.
SOURCE: samsung lns4095dx/xaa after 30min the screen goes
The first place to start is with the Main bd. The second cause would be the T-con bd. Have a trained Samsung tech troubleshoot to find out and repair the set.
SOURCE: Samsung HLP4674W - changed bulb - still no picture - lights flash
If the lamp has been replaced I would think the Lamp ballast would be most likliest followed by the color wheel and then the Digital board. You can get any part needed for your model at www.tvrepairworld.com just leave them a email they respond quickly.
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