Pxi 8360 power led flashes red

I have a PXI 8360 MXI Express board mounted in a PXI 1050 chassis. I am seeing the power LED occasionally flash red and I lose communication with the computer. The power LED will return to solid green status after a few minutes but I am not able to do much with NI DAQ to test the system since it has failed self test. The suspicion here is the power supply may be bad but how do we check that.
The system with the computer has worked well over the past several years and we are concerned about possible damage from a power fluctuation that happened here around Christmas time.

Hi Xavier,
The red flashing light is on the PXI 8360. I have not seen any flashing lights on the chassis.
The modules present in the system are
PXI 8360 MXI Express
PXI 4071 7 1/2 digit flex DMM
PXI 4110 Programmable DC power supply
PXI 4110
PXI 4110
PXI 8252 1394 Host Adapter
TB 2627 multiplexer terminal block
PXI 6289 M series multifunction DAQ
SCXI 1306
SCXI 1303
SCXI 1303
SCXI 1300
So far all testing has been done with all modules installed. Another person has tried reseating all modules to see if that would fix the problem but it does not.
The system will work fine for a few hours and then the blinking LED will begin and somewhere near that time the communications fail with the computer. The light will blink for a few minutes and then will return to solid green. Once the error has occurred it seems that the only way to re establish proper operation is to shut down the whole system, PXI chassis and computer, and restart. I saw one time where the power LED on the 8360 went from flashing red to solid green when the computer was turned off.
The computer is a Dell Precision 690 with PCIe 8361.
I will be opening up the chassis hopefully in the next day or two to check fuses and voltages where I can.
Bill

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