Power light flashes and doesnot turn on

This is an indication of error codes for defects inside the TV. In order to ensure this is not caused by some erratic signal to system IC, switch off TV manually, Switch off power and remove plug and wait for 48 hours and retry. If it does not work even then, the TV might need service.

I'm pretty sure you have power fault with your tv. You should check the power mainboard to see if there are inflated electrolytic capacitors, they need to replace with new ones according to the type and position.

You may be aware that Olevia is bankrupt and apparently Emerson bought the leftovers and is offering service but no parts sales.
I found this thread discussing antoher model's various problems but I believe your power supply has likely failed.
Olevia thread
If it is the type of failure related to the switched-mode power supply, these can be repaired by a properly equipped tech; I've done hundreds of them while still in business (which I am no longer).

Sounds like the motherboard. Take the cover off the tower and when turning your computer on inside there is a green light and if it goes to an orange light and stays flashing the motherboard needs replaced

The flashing light red power light should only stay while the fan cool down for about 1 minute after a power off (remember to always wait before unplugging the TV so the lamp can cool down with the fan). Does that flashing start right away after plugging back the TV after an hour of letting it without AC power.

The red light should flash no longer than 10 sec. This prepare the light to be turned on. If all is OK the green should stay (no longer flashing) and the sound and picture come on.

As for the lamp flashing, i bet it's only 1 time each 5 sec? Or do it group many rapid flash each 5 sec?

Things that can be wrong:
-the fan lamp

-the lamp is not proprely inserted (wait an hour before manipulating it to be sure it cooled down, and use glove to not put body oil on it).

-Lamps is defective and is not operating properly so you can't get to the usual on screen message that recommend to change the lamp.

DID YOU TURN ON IGNITION SWITCH ON AND SLOWLY DEPRESS AND RELEASE THE ACCELERATOR PEDAL 3 TIMES WITHIN 5 SECONDS.IT WILL TAKE LONGER TO RESET DETERMINE HOW LONG YOU LET THE OIL LIGHT STAY ON.WHEN YOU TURN ON SWITCH 5 SECONDS DEPRESS AND AND RELEASE ACCELERATOR 3 TIMES.IF DONT RESET.TURN OFF SWITCH.THEN TURN BACK ON.YOU MAY HAVE TO DO IT SEVERAL TIMES.LET SWITCH REST SOME TRY AGAIN.IT WILL TAKE A WHILE.WHEN EVER CHANGE OIL SOON LIGHT COME ON RESET IT THEN AND CHANGE OIL.DRIVE IT ON A WEEK OR TWO TAKES LONGER TO RESET.

Take off the the battery and connect the cable to your pc, and put it on, if it works this means the battery is died, if it doesnot come on try to use another charger, it seems the charger doesnot give enough power for your laptop. 

I’m happy to help further over the phone at https://www.6ya.com/expert/mustafa_06f84c65ab5cc745

CHECK THE FUSES

hi sounds like a power supply fault, swollen capacitors usually cause this fault,thanks

shaun

The power supply ballast board has 5 1000uf, 16 volt capacitors that fail(you will likely see them swelling, or leaking), These are common cap's.

This can either cause the backlight to not work at all, light temporarily, or display no picture, but still give you sound.

BCF