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How do I open HP 8600 Pro printer and replace power adapter?

by LTcompUSer / September 8, 2013 4:10 AM PDT

Initially, printer would not turn off via power button. Removed power cord from wall socket and plugged it back in, power came on immediately and still would not turn off. Used scheduler to turn it off and now it will not turn on. Connected printer to computer via USB port on front and power light came on, but not enough power for touchscreen. Still would not turn off via power button. When power cord is first plugged into wall after unplugging from socket for times ranging from 15 seconds (as recommended by HP) to several minutes and then plugging into back of printer, power button lights very, very dimly) for several seconds, then flashes and turns off.

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All Answers

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There appears to be no service manual.
by R. Proffitt Forum moderator / September 8, 2013 8:59 AM PDT
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No Service Manual
by LTcompUSer / September 9, 2013 11:31 AM PDT

Thank you, Bob. Your experience has been the same as mine. Before posting my request for help, I scoured the HP web site for nearly two hours, going back and forth, back and forth and found very little. The only replacement parts that I found listed anywhere by HP are the duplexer, printhead assembly, some trays, etc. Nothing that is behind closed plastic internal to the printer.

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Why not just splice an inline switch
by itsdigger / September 8, 2013 9:10 AM PDT
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Splice Inline Switch
by LTcompUSer / September 9, 2013 12:11 PM PDT

<span id="INSERTION_MARKER">Thanks, Digger, but I've tried a second power cord with the same results as with my own, suggesting that the problem does not lie within the power cord, which is what I believe the inline switch is designed for: to eliminate the need to continually plug and unplug the power cord to/from both the printer body (which contains the power adapter) and the wall outlet. It appears that the problem I have been experiencing lies somewhere within the printer body, internal beyond the point where the power cord connects.

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I think Digger was suggesting a switch
by mrmacfixit Forum moderator / September 10, 2013 8:29 AM PDT
In reply to: Splice Inline Switch

that would cut the power to the printer without the necessity of unplugging it from the wall outlet.

Perhaps something like a switchable surge protector.


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I suggest...
by Willy / September 8, 2013 8:23 PM PDT

Unless this is some "Chinese box" you use common sense to find out how to open the HP-8600. Using deft care, proceed at your own risk. Besides screws, some times, hidden tangs/clips have to depressed or slide a metal shim in order to start opening the case.

You can also checkout "repair/parts sources" to see if they provide anything that helps. often enough an "exploded view" is provided to locate the right replacement part and/or the HP parts lists, etc.. You get an idea how it comes together and what's involved. make darn sure, you're referencing the right printer, there should be some Xxxxxx some number on the printer decal offering real info of what it is, besides 8600, models can vary slightly.

X = some letter
x = various numbers and/or letters

Of course, if this becomes too much, get pro help or see what the costs are. A power supply replacement maybe better spend on new or used printer of same type, So check eBay and Craigslist for pricing besides new.

tada ------Willy Happy

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Perhaps It Approach A Chinese Box in Complexity
by LTcompUSer / September 9, 2013 12:13 PM PDT
In reply to: I suggest...

Thanks for your suggestions, Willy. I fear that this printer is put together more like a Chinese Box than the engine compartment of a '72 Datsun where you could lay your hands on any part that needed replacing!

After considerable searching, I was unable to find anything helpful from HP: no exploded diagrams, no internal parts list, etc. The only thing I found at the site was something among the FAQs to the effect that if it won't turn on, it sounds like the power adapter, so... contact HP to replace the power supply.

If the printer were older (not 16 months) and if I had not just replaced two ink cartridges (printed only once since putting them in) and have two XL black cartridges "in stock" (because the black was getting low), I would not be trying as hard to fix it. I had actually replaced my old single function HP printer with the 8600 when the old printer needed both a black and a color cartridge, adding up to over $50. That $50 seemed like a nice credit to be added to the great sale price for the 8600 when I bought it.

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Checkout this website
by Willy / September 9, 2013 8:53 PM PDT

Is the printer fixing/repair website. They offer forum type advise and/or required items as maybe needed for DIY'ers. If anything you can post there your query. As you find, there are many printers out there needing repair. if you don't want to waste you ink supplies, again finding a used printer could be cheaper than new. If you teardown the printer it won't do much good if no replacement part can be had, as it seems HP doesn't supply it. As for other sources, that too seems limited in my basic searches.

tada -----Willy Happy
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