LaserJet Pro 200 color M251nw 50.2 fuser error, replacing power supply

[junerose76]

LaserJet Pro 200 color M251nw with 50.2 fuser error.  Turning off and back on did not fix the problem.  The last few pages it printed were scrambled.  Replaced the fuser.  After new fuser, it will (usually) print 1 document and then gives 50.2 fuser error.  Letting it just sit idle, it will go to the fuser error also.  I am keeping it turned off until I really need to print something and can usually coax one page out of it.  Have unplugged for extended periods.  Have plugged directly into wall socket instead of through surge protector.  Problem persists.

I have read that the fuser power supply probably needs replaced.  As I was searching for that part, I read from one site that they required that the low voltage power supply must be replaced at the same time.  (And yet another place indicated that the high voltage power supply also needed replaced at the same time!)  I would value any useful advice regarding this problem overall, but specifically I am wondering if I replace the fuser power supply (RM1-8709-000), do I also need to replace the low voltage power supply (RM1-9012) at the same time?  I don't care for any more expense than necessary.

Thank you

P.S.....and now I just got a 50.4 fuser error when I turned it on....!

[Repairatrooper]

50.4 is a fuser heating wire failure. I checked my partner website and there are no service manuals published for this product.  The high voltage supply would be the least likely to cause this issue. I noticed several parts suppliers indicating that both the low voltage and the fuser supply must be replaced at the same time. I have no way to verify that statement.

[junerose76]

Thanks for that input, repairatrooper.