PXI Chassis Power LED Flashing Red: What to do?

My NI PXI-1042 keeps blinking red the Power LED. I know it means the voltage is out of the specs. What to do?

FilipeTaveiros wrote:
But it is not continuously red.. It is blinking red.. Thanks for your help. Anyone? 
This is copied right out of the manual: 
The chassis power switch has an integrated LED. This LED indicates one
of three different conditions:
• If the power switch LED is steady green (not flashing), the chassis is
powered on and operating normally.
• If the power switch LED is flashing green, the air-intake temperature
has exceeded the chassis operating range.
• If the power switch LED is flashing red, the power supply outputs are
not within voltage regulation requirements.
You either have a power supply problem, or you are loading it down with too many modules.  Try running it empty and see what the light does. 
Using LabVIEW: 7.1.1, 8.5.1 & 2013

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