Lexmark MS811dn Flashing Screen

[YeahDoggie]

Hello!

I have a Lexmark 811dn. Upon startup, the display screen turns on then starts flashing after about 15 seconds. The screen does not at any point advance past the LEXMARK logo. Just sits there flashing.

The printer does still work even with this issue.

I do have another of the exact same model that I can use to swap some parts to try to locate the exact issue, if anyone has suggestions.

I did try to update the firmware. Says it’s ready to use.

Thanks in advance for any help!