In a recent power loss (took out our R&D UPS in the process), an MDS 9216 we have in R&D failed.
On power up, it shows a red status LED, and does nothing. We've pulled and swapped PSUs (something we're told is a common fix for a common problem with these chassis), to no avail.
Strangely, we pulled the fan card (which had a green light), and put it back in to see it now also has a red status light.
We've swapped all cards around for new and spares (even the main cards) and they show up with red status lights in the chassis (can't test them in another chassis at present) so I assume this problem is with the chassis itself (ie the backplane or PSUs).
Any ideas, any similar experiences?