HP Color LaserJet 3600n - Stuck on Initializing - Tried EVERYTHING!

[ICLL]

No matter what I do I cannot get the printer to turn on. Was working fine one day and the next get this "stuck on initializing". Tried to remove power cord from printer and wall. Waited  24 hours. Replaced. Did a hard reset. Not matter what I try won't work.

Thank you!

[east2100]

With power on press the engine test button from rear side of 3600n to see if it can print or not.
If it does you have a bad formatter (mainboard) needed to be replaced (or you can try to bake it in the oven-search it on YouTube).

[ICLL]

Thank you for the quick reply. Pressing the engine test button does not do anything. The 3 lights on the fron keep cycling - ready - data attention - in an endless loop.

[east2100]

Try to reseat the formatter by pulling it out and push it back to see it helps. In the meantime when pulling out the formatter check any dimm and reseat it if needed.

[ICLL]

Thank you - Tried that many times before posting. Doesn't do anything. As far as I see there are no DIMMS installed to reseat. Printer still cycles through the 3 status lights. ALso - Not making any noise. Previously upon startup or when using the printer it would make "noises" when starting. Now - Nothing - Silent.