Question about Dell OptiPlex GX260 PC Desktop

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My hp dc 7600, stop to work and now don't power on. When I press the power button the computer start the fan cool and then turn off.

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  • 242 Answers

Big chance you've got a broken motherboard...
Maybe your CPU is broken...

Check your motherboard for 'swollen capacitors'.
Instead of flat, it will have a convex top.

You can also have someone who knows a bit more of computers look after it...

Posted on Mar 29, 2008

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Posted on Jan 02, 2017

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A couple of weeks ago, my HP Pavilion a706n was working completely fine. Soon enough, the first error appeared. I could use it for a good 5-10 minutes and it would shut off by itself. When I attempted to...


If you have cleaned out the dust with compressed air, then I suggest you look at the processor cooling. Is the fan running up to speed? Is the heat sink tightly in place on the processor? Feel the fins of the processor heat sink when you power it up and if they get hot your processor is most likely over heating and shutting down. If all is well at the processor, check the power supply fan to see if it is running and the only other suggestion is to try another power supply. Dust is your worst enemy in a computer.

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Where i can run cooling fan on hp pavilion dv6 laptop 2011 ? i buy new one but i don't no which button i have to press Please help me


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MY PRINTER hp laserget 4250 dtn is displaying 57.4 error when I turned it on, what can I do? I am ofetn requested to suitch off and then to switch on but it fails to mark " Ready"


57.4 Main fan error

Hi I hope this will help

The text come from the hp manual

good luck Ian




Q2431-90912 Chapter 7 Troubleshooting 287

57.X

PRINTER ERROR

To continue turn off then on

or

57.3

EP FAN FAILURE

or

57.4

MAIN FAN FAILURE

A printer fan is not functioning.

X Description

3 EP cartridge fan, right side

(LJ 4300 only)

4 Main cooling fan, left side

Turn the printer off and then on.

57.3 Cartridge fan error (F2)

1. Reconnect the connector

between the fan and the

DC controller PCA

(location J78).

2. Replace the fan. See "Cooling

fan (right side;

HP LaserJet 4300 series

printer only)" on page 170.

3. Replace the

DC controller PCA. See

"DC controller PCA" on

page 181.

57.4 Main fan error (F1)

1. Reconnect the connector

between the fan and the

power supply.

2. Verify that the ribbon cables

are fully seated in the

connectors on the

DC controller PCA.

3. Replace the fan. See "Main

cooling fan (left side)" on

page 168.

4. Replace the power supply.

See "Power supply" on

page 188.

5. Replace the

DC controller PCA. See

"DC controller PCA" on

page 181.

57.7

DUPLEX FAN FAILURE

The cooling fan in the optional

duplexer is not functioning.

1. Turn the printer off and then

on.
2. Replace the duplexer.

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Audio drivers for this computer are here:

http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?prodNameId=472278&lang=en&cc=us&prodTypeId=12454&prodSeriesId=472276&taskId=135

Original drivers from HP

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If your PC meets the minimum specifications ie 1Ghz CPU and 1Gb of Ram then it should be able to run Windows 7. You can try repairing the installation by following the instructions below :


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Hope that works for you.

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REMOVE YOUR BATTERY AND TRY RUNNING IT OF DC POWER THAT WILL TELL YOU IMMEDIATLY IF IT IS THE MACHINE OR THE BATTERY

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"Turn off computer and unplug power cord. <br>Disconnect all external devices. <br>Remove the battery. <br>Press power button and hold for 10 to 15 seconds. <br>Plug power cord back into computer and press power button. <br>Check front panel LEDs (lights) on bezel (front face) or optical drives and listen for power supply fan. <br>If LEDs are on or power supply fan starts spinning, watch for boot screen on monitor. <br>If computer begins to start, turn it off. <br>Reconnect any external devices. <br>Press the power button and make sure the computer starts.
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worked for mee!! good luck

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Cooling fan replacement for my hp 6624A dc power system


TAKE 9VOLT BATTARY TO SEE WITCH WAY THE AIR BLOWS, UNLESS BY LOOKING AT THE POWER SUPPLY HOUSING AND UNDERSTANDY WHAT THE ARROWS ON THE CACE SHOWS DIRECTION,

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1 Answer

Panasonic large screen Model # PT-61LCX65


Here is the proceedure to replace the lamp and reset the lamp hours.
Lamp Replacement Procedure:
1. Press the POWER button to turn off the power.
2. Wait for about 1 minute until the cooling fan stops.
Note:
The lamp cooling fan will continue to operate for about 1
minute after the power is turned off. Do not unplug the AC
Cord from the outlet until the fan has stopped. Avoid
interrupting the power by using circuit breakers or switchable
power strips.
3. After the cooling fan has stopped, unplug the AC Cord from
the outlet.
Note:
Please wait more than one hour before replacing the lamp.
[ Forced cooling function ]
If you need to replace the lamp more urgently:
- The Projection display has a forced cooling feature.
After the POWER button is turned OFF, and during the
first minute of the normal cooling fan operation, press
the VOLUME UP button on the unit and CH UP key on
the remote at the same time for more than 5 seconds.
The cooling fan operates for about 10 minutes. (LAMP
LED will flash 5 times every 5 second and POWER LED
will flash red for 10 minutes.)
4. Remove the Front Cover Unit from the latches.
5. Turn the Knob to the left.
6. Pull the Lamp Cover out.
7. Loosen the Screw on the Lamp. Then, pull the Lamp.
Note:
Because the Lamp may still be hot, use caution when
handling.
8. Install the new Lamp, and tighten the Screw.
9. Install the Lamp Cover, and turn the Knob to the right.
10. Install the Front Cover Unit.
Lamp Time Reset Procedure:
Be sure to reset the Lamp time to "0" after replacing the new
Lamp.
1. Plug in the AC Cord, and turn on the power by pressing the
POWER button.
2. Press and hold the VOLUME DOWN button on the unit and
the SPLIT key on the remote together for over 5 seconds
in power on condition.
When the reset is finished, the display will indicate that the lamp hrs have been reset to 0 and the LAMP LED goes out.

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