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What is the blinking green light inside of the Ultimate Receiver and Theater Grand Processor?

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What is the blinking green light inside of the Ultimate Receiver and Theater Grand Processor?

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If you look through the ventilation openings on the right side of the Ultimate Receiver you will see a blinking green LED. This is the ‘heart beat’ of the microprocessor. It’s there as a convenience for the technicians when the unit is being assembled and tested in the manufacturing process. Basically it’s just a indicator that tells them the microprocessor is alive and well. This is totally normal and will continue to blink even when the power is switched off, see below.

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