Question about HP z545-b Digital Entertainment Center PC Desktop

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Power supply failure -- can't find replacement!

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Check for part number HP 5187-8274, this has been replaced by part number HP 5188-2621 both are available from several suppliers.

Posted on Jun 27, 2009


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Posted on Jan 02, 2017


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Mfc 7360 unable to print 7a

Error code 7A
A synchronized signal of the main motor cannot be detected.
Turn the power off and then back on again.
1 Flat cable connection failure of main motor
Check the flat cable connection of the main
motor and reconnect them.
2 Main motor failure Replace the main motor.
3 Low voltage power supply PCB failure
Replace the low voltage power supply PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
Replace the main PCB ASSY.

Jan 14, 2015 | Brother MFC 7360N - Multifunction fax /...

1 Answer

Unable to print 36

Possible Reason:
1. High voltage power supply PCB
---Replace the high voltage power supply
2. Harness connection failure of high
voltage power supply PCB
---Check the harness connection of the high
voltage power supply PCB and reconnect
3. Main PCB failure
---Replace the main PCB ASSY.

Aug 08, 2014 | Brother Dcp-7055 Laser Print Copy Scan...

1 Answer

Ways to fix red lights blinking four times

Red Power LED
flashes once
every two
Red Power LED
flashes four
times, once
every second,
followed by a
two second
None Power failure
(power supply is
1. Check that the voltage selector,
located on the rear of the power
supply, is set to the appropriate
voltage. Proper voltage setting
depends on your region.
2. Open the hood and ensure the 4-wire
power supply cable is seated into the
connector on the system board.
3. Check if a device is causing the
problem by removing ALL attached
devices (such as hard, diskette, or
optical drives, and expansion cards).
Power on the system. If the system
enters the POST, then power off and
replace one device at a time and
repeat this procedure until failure
occurs. Replace the device that is
causing the failure. Continue adding
devices one at a time to ensure all
devices are functioning properly.
4. Replace the power supply.
5. Replace the system board.

Jun 14, 2014 | HP Compaq dc5000 Small Form Factor PC...

1 Answer

Monitor does not turn on

The most common cause of power issues with that model is a dead power supply resulting from a failure in the capacitors on the power board. This is a very easy repair. You have to replace the 6 filter capacitors on the power supply board. The capacitors on the power supply board should be flat on the top and when they fail the tops will bulge showing failure. You can open the monitor up and look at the power supply board and check for the bad capacitors to verify the failure point. Here is a link to some information and parts kit to repair that board.

I hope this helps.

Jun 20, 2012 | ViewSonic Computers & Internet

1 Answer

The computer suddenly shut down & will not re-boot. On turning on there may be a few seconds to allow option of opening up in safe mode which is applied but within a few seconds the system shuts down...

Bad Power Supply.
Weak voltage power rail.

One of the leading causes of computer failure.
Replace the Power Supply.

[The next cause of failure is the computer is dirty inside, as well as inside the Power Supply's case.
Dirt, dust, etc, takes a Power Supply down quick ]

Need guidance of how to replace your Power Supply, or guidance in finding a decent replacement Power Supply let me know in a Comment.


Dec 02, 2010 | Packard Bell Computers & Internet

2 Answers

Error 001, error 808

the e001 code is something is going with the fixing assembly. one of the thermistors could be going bad.

E808 is a Zero Cross error. We most commonly see power supplies or bad wall voltage cause this code.

The following information is coppied from the IR2016 Service Manual.

A zero crossing signal cannot be detected.
A fixing drive motor failure has been detected.

E808 0000 Fixing drive circuit failure
  • The heater does not turn on.
  • A fixing drive motor failure was detected.
  • Check the connector of the fixing film unit.
  • Replace the fixing film unit.
  • Replace the fixing drive motor.
  • Replace the DC controller PCB.
  • Replace the power supply PCB.

M201 - Fixing Drive Motor - FK2-1067 - J202 on the DC controller PCB - E007, E808

Power Supply - FK2-1074

Jun 14, 2010 | Canon iR 2016i Black and White Copier

1 Answer

When i print using my docuprint 203A fuji xerox, the printout result paper was cover with black all over. what does this mean?

This is a rebadged Brother Printer.

Possible causes for a solid black output:
1 Corona failure
Is the corona wire dirty?
Clean the corona wire with the wire cleaner.

2 Corona wire broken?
Replace the drum unit

3 Are the charge electrodes between the printer body and
the drum unit dirty?
Clean both electrodes.

4 Harness connections?
Is the laser unit connected to the main PCB correctly?
Connect the harness between the laser unit and the main PCB

5 High-voltage power supply PCB failure
Is the problem solved after replacing the high-voltage
power supply PCB?
Replace the highvoltage power supply PCB.

6 Main PCB failure
Is the problem solved after replacing the main PCB?
Replace the main PCB.

7 Laser unit failure
Is the problem solved after replacing the laser unit?
Replace the laser unit.

Good Luck!

May 12, 2010 | Fuji Xerox® DocuPrint C3055DX Laser...

2 Answers

My dell GX 1 optiplex pc is not powerring and power supply is not

If you don't have the LED lit up on the board, the most likely failure is your power supply. You should be able to get a computer store to test it, to be sure, but a replacement is $30-40

Nov 24, 2009 | Office Equipment & Supplies

1 Answer

Power failure

For PC power failure. The problem is your power supply,
Have it replaced to get it back to operational level.

Nov 11, 2009 | Computers & Internet

1 Answer

My Compaq Presario will not start since we had a power failure in our town yesterday. It seems like it is unplugged, but it is plugged in. Can you help?

Can you check if the power is connected to the ac outlet, and if the cpu has a power. If no power in the cpu even the power cord is pluuged in the outlet of the power source the problem is your power supply. Maybe the fuse blow up when the power is back after the power failure. But sometimes the cpu has no power but the monitor have a power it's also power supply failure the dc output of power supply is not working. the best solution is to replace the power supply with the same wattages or higher.

Apr 15, 2008 | Computers & Internet

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