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Re: HP Z800 alternative power supply found! If your curious of the original user that found the alternate power supply, do an internet search using the title of this thread.
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! For all the instructions and pictures in (1) file, here's a complete PDF of the steps.
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! ALL FINISHED!!! The alternate power supply is ready to power your computer. This alternate power supply should last well until the Z800 Workstation is fully obsolete and no longer worth repairing.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 17) Reattach the back connector panel to the case (3 screws). Discard the original top panel, as we will not be re-using it. 18) Insert the alternate power supply into the Z800.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 16) Rotate the alternate power supply to nest inside the Z800 power supply case. Nest all the extension wires nicely under the connectors wire bundles for a cleaner look.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 15) Take an old computer power cord, cut off the female end – and solder it on the Z800 original case 110V plug wires. This gives you an easy way to plug the 110v receptacle into the alternate power…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 14) Now we begin to start soldering on the Z800 connector wires. We will be using the wiring figure and start soldering the extension wires to the indicated locations (+12v, +5V, Ground, -12V).…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 12) Use a piece of wire and solder pin 31 to pin 34 (see blue line). Connecting pin 31 and pin 34 turns the power supply on. Disconnecting the pins will turn the power supply off.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 11) For the purposes for the Z800, use the attached wiring figure. We will connect the blue wire and the red wire to turn the PS on. We will use the (+12v / +5v / Ground / -12v) pins for the Z800…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 10) This power supply is utilized by many different people for many different purposes. Luckily, the hard work has already been done – which is figuring out how to wire it.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! Prepare the alternate Power Supply: 9) The alternate power supply has a mechanical catch which will need to be removed. Remove the cover and lay it over.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 8) For each connector, solder on an 18-20” extension wire to each wire bundle. Shrink-wrap or electrical wrap each solder joint. Label the far ends of the extension wires with the appropriate…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 7) Each bundle of wires is crimped together with a metal band and then the band is soldered in place. Unsolder the wires (i.e. the bands) from the circuit board.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 6) Look at the original power supply board where the wire connectors are attached. The board is stamped with the corresponding voltage where each wire is connected. (See pic 8)
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 5) There’s (1) stand-off located in the middle of the case. Grab it with some pliers and bend it until it pops off. Use scissors and cut the top flap off - along the upper fold line.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 4) Unplug the 110V plug from the board, unplug the (2) fan plugs, and remove the (1) LED light from the case. Remove the (5) screws that mounts the board to the case - and remove board. (See pic 6)
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 3) Remove the side panel with the connectors. (See pic 5)
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! 2) Remove the top cover of the power supply. (See pic 4)
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! There’s a large supply of these power supplies on eBay at reasonable prices. You may note, the alternate power supply is slightly taller than original (2.09” versus 2.…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! Reference the Z800 manual here: https://www.manualslib.com/products/Hp-Workstation-Z800-2372873.html Search for Power Supply Specifications (Table 1-6,…
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- 3 wk ago
- HP Workstations
- Reported - view
Re: HP Z800 alternative power supply found! To begin with, here’s some general information about the original Z800 power supply. The Z800 has 2 sizes of power supplies, with most people having the smaller 850-watt supply.…
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- 3 wk ago
- HP Workstations
- Reported - view
HP Z800 alternative power supply found!
Hi All, If you’re here, it’s probably because you have a failing Z800 Power Supply. When the power supply starts failing it will randomly turn off, or not turn on.…
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- 3 wk ago
- 22 replies
- 19
- HP Workstations

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