Hi there, i have an hp 3500 printer. the fuser was ript appart and needed replacment.(the rol was broken on one side and was not burning the inkt on the paper anymore) i have got a new one, but keep on getting error 50.9 fuser hot. when installing the old but broken one, there's no problem. i have orderd a second fuser, and it give's the same error. i checked the connectors, it seems oke. the fuser does not feels to hot or something like that. anyone any idee...

just an update for you al..

the connectors and the dc controllers checked out just fine..
that's not the problem.
but i have taken on the bold step of taking appart the new and old fuserkit, just to create one working one from those two (old end new broken) fusers.

i have opend the new fuser unit and have taken out the heater and its sensors, and have replaced it with the heater and sensor unit from the old fuser kit.
and like a miracle it works.... :-)

just keep in mind to first strip the old one and the seccond after the old one, just to learn the inside of the fuser.

but for now its working fine, no more errors and a nice clean print.
thanks for the help. your last words where the push for me to take them appart.
I thought, wel nothing to lose, its broken already. just an update for you al.. the connectors and the dc controllers checked out just fine.. that's not the problem. but i have taken on the bold step of taking appart the new and old fuserkit, just to create one working one from those two (old end new broken) fusers. i have opend the new fuser unit and have taken out the heater and its sensors, and have replaced it with the heater and sensor unit from the old fuser kit. and like a miracle it works.... :-) just keep in mind to first strip the old one and the seccond after the old one, just to learn the inside of the fuser. but for now its working fine, no more errors and a nice clean print. thanks for the help. your last words where the push for me to take them appart. I thought, wel nothing to lose, its broken already.