BL460C no ILO output

[rossb2]

BL460 has power, but no ILO output(Grey screen).

-there are no errors in the IML logs
-OA logs show no issues
-tried blade in known working slot
-replaced system board
-blade upgraded to latest ILO firmware, although I cannot upgrade system firmware due to the issue(on version I15 06/25/2008)

This is actually the second blade I have had like this in as many weeks. Both were new blades. The first was exchanged with the vendor(before the exchange I tried using known working RAM/Processors, this did not fix).

Are there any recommendations for fixing this issue? If I dont get any, I will have to go for another vendor swap out.

[rossb2]

forgot to put:
Tested in enclosure with latest OA firmware, enclosure does not have virtual connect module.

[JKytsi]

We have changed several motherboards for that error.