Netscreen 5XT issues

[DeanB]

Hi guys, I have a Netscreen 5XT that hadnt been used for a few years and no one knew IP address, user, pass etc. I cannot get any response from any console session, ie the screen is always blank. The status light continues to blink green, even after a power recycle. It doesn't matter how many times I press the button in the pinhole, the unit will not reset, and without console access I am at a bit of a loss in regard to my next course of action...any ideas? :)

Thanks

Dean