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Hello and sorry you're having problems. If the screen has gone black and the red lamp light is blinking then you need to replace the Lamp in the set to fix the issue. This is a consumable part- meaning it's designed for a certain lifespan and then needs to be replaced when it fails.
The OEM for your set is available at the link below for purchase and will fix this issue:
The instructions to replace the lamp are in the owner's manual for the set, which if you do not have is available at the link below and reference page 16:
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