It is highly unlikely that unless something catastrophic has occurred like a lightening strike all will be faulty!
Try resetting the microprocessor before anything else. Press and hold the power button is as you connect it to the mains.
If that doesn't clear the error, check the power supply rails are all present.
Try resetting the microprocessor before anything else. Press and hold the power button is as you connect it to the mains.
If that doesn't clear the error, check the power supply rails are all present.
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