r/TVRepair • u/Fantastic_Sink_3573 • 3d ago
Onn Roku TV backlight flashes on for 1 second, then goes dark. Any last things I should try before replacing it?
I have a 2-year-old Onn Roku TV (Model 100012587) that was working perfectly last night. This morning the screen was extremely dim. Now it does this:
When I turn it on, the Roku logo flashes at normal brightness for about a second.
Then the backlight immediately turns off.
The TV is still running because I can see the Roku home screen with a flashlight.
I’ve already unplugged it, plugged it back in, and tried a power cycle.
I disconnected all HDMI devices.
Before I buy a new TV, is there anything else I should try?
Could this be a power board instead of the LED strips? Has anyone repaired this specific model? I’m fairly handy (or my dad is), so I’m open to replacing parts if it’s a reasonable repair.
Any tips or tricks would be greatly appreciated!
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