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Richard
Richard, Technician
Category: Printers
Satisfied Customers: 38513
Experience:  Printer and scanner problem resolver for over 15 years
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It won't power on Canon MF8350 cdn, it worked fine on

Customer Question

It won't power on Canon MF8350 cdn, it worked fine on yesterday, I've checked power supply and changed poewr outlets
JA: Has your Canon done this before? And can you guesstimate how old it is?
Customer: 4 years, first time
JA: What kind of computer are you printing from (Mac or PC)? What Operating System (OS) are you running?
Customer: PC Windows
JA: How long has this been an issue? What happened right before this popped up?
Customer: worked fine yesterday, came to office this morning it won't power on
JA: Anything else you want the printer expert to know before I connect you?
Customer: no
Submitted: 2 months ago.
Category: Printers
Expert:  Richard replied 2 months ago.

Hi there and welcome

Are you seeing any lights or hearing any sounds at all when you try to start the printer?

Please let me know

Customer: replied 2 months ago.
No
Expert:  Richard replied 2 months ago.

thanks, ***** ***** issues you are experiencing are symptomatic of an internal hardware defect, meaning a faulty power supply or logic board. This issue could be a manufacturing defect, but is also often caused by a power event (shock/surge, prolonged over/under voltage condition, etc).

This could also be the result of age related wear and tear, as a 2012 model, that type of failure wouldn’t be surprising as this machine was designed and built for only a 3 year service life.

There is one step you can take here, both as a possible fix, as well as a diagnostic evaluation

unplug power at the wall outlet

wait 5 minutes

press and hold the power/on button for 60+ seconds

keep holding while plugging back in, and for another 60 seconds after, then release

If this reset process does not work, it would unfortunately confirm an internal hardware failure.

This is something that would require repairs to correct; at that point it is time for a new printer. While it can be fixed, it is not practical to do so. You'd be in the $150 range to have the internal power supply replaced, and a logic board would run you $200-250. For the eventual cost, can replace the entire machine with a brand new model, with current technology and a fresh warranty, which makes more sense than buying the new part for an older printer.