🚀 go-pugleaf

Hello.

I don't quite believe my luck.. or non-luck.

I've been given an HP LaserJet II.  And, no, it doesn't work.  (The
giver wanted an LJ-III and didn't want to bother having the LJ-II
repaired).

I can turn the unit on..  Can hear the motors move.  The front panel
lights go on normally and the display says "05 SELF TEST".  It gets
through that okay.. then the display says, "02 WARMING UP".

And it sits there, "WARMING UP".  Never seems to come out of it.  The
room lights on that line dim occasionally from a high current draw.
They return to full brightness after a second or two.. which makes me
think the printer electronics are protecting something.

I turn the machine off, stick my hand in there, and the fuser area is
dead cold.

The front panel lights do not re-light.  

The best I've done is measure continuity through the fuser heating
element (using an ohmmeter).. but beyond that, I'm stuck.  I have no
ideas where to peer next inside this beast.

Before I telephone HP Service (ouch), can anyone suggest a possible
course of action?  Possibly something simple died that I can easily
fix?  Maybe a blown fuse in the power supply going to the thermal
regulator on the fuser?

Suggestions for other tests would be appreciated.  It would be nice to
get it running...

Regards,
Mark
mbeck@ai.mit.edu