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**Storyteller12** · 10-11-2021, 07:31 PM

It’s the main board. If backlights work with mb disconnected that mean power board is good. You must have got a defective mainboard. Even if the panel was bad the standby light would be on when the tv is off.

10-11-2021, 07:31 PM	#2
Storyteller12 Badcaps Veteran Join Date: Jun 2020 City & State: Virginia My Country: USA I'm a: Knowledge Seeker Posts: 214	Re: Samsung un49mu7000f dead no power It’s the main board. If backlights work with mb disconnected that mean power board is good. You must have got a defective mainboard. Even if the panel was bad the standby light would be on when the tv is off.