Unfortunately it could be either the main or power board causing issues
Shorted circuit board is the cause.
SOURCE: Samsung ltm1555B - lcd tv blinking on button
I am having the same problem with the blinking orange light
SOURCE: my samsung tv wont turn on, red light keeps flashing on the front.
i had this with my samsung and my mums instead of pressing red power button press either switch from analog tv to digital button or just press a number
SOURCE: samsung lcd tv ltm1755b won't turn on (power light stays red)
Problem: Samsung LTM1755B with only a blinking yellow LED when you try to turn it
on.
Solution: I just had one of these come in. I opened it up, and found
the U501 capacitor a little suspicious looking, in that it had a
deformed top. It was a 470uF 16V electrolytic 105degC 10mm x 12mm. I
replaced it with a very good quality 1000uF 16V electrolytic 105degC
10mm x 16mm Nichicon UHN1C102MPD. After that repair, when I tried to
turn it on, the LED was yellow for a second, then green, then I got a
picture, and it appeared to work great. I then asked the owner a week
later how it was working, and they said it was working just like new!
SOURCE: Samsung HLT5076SX XAA turned itself off. Two
If you do not hear the color wheel start to spin inside of light engine this may have failed also check to make sure fans are working and safety switch is making contact
SOURCE: my 32" Samsung lcd tv won't turn on, led is solid red
The Main bd is bad. It is not sending a turn on signal to the power supply.
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