that would cause the same thing
The unit is completely dead - two LEDs in the front are shining brightly but no sound at all - fans etc. The on/off does nothing. If I unplug the power adaptor both lights go out. Am trying to repair for a senior citizen. Am ready to put a volt meter on the connector to see that the power adaptor juice is getting to the board - but after that I will be at a loss.

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