Question about HP Media Center m1170n Photosmart PC Desktop

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Power My computer will not turn on. light on power pack blinks when plugged in but goes off when unplugged. Can you help me?

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  • tresa2 Jan 01, 2009

    No beep and no fan

  • gordy282 Mar 05, 2009

    I SHUT THE COMPUTER DOWN AND OPEN THE SIDE AND WAS CLEANING THE DUST OFF THE FANS INSIDE AND PUT IT ALL BACK TOGETHER AND WHEN I WENT TO RESTART IT THE BLUE LIGHT ON THE FRONT DOES NOT COME ON AND NO POWER IS COMING ON AT ALL...... THE LIGHT ON THE BACK OF THE COMPUTER NEXT TO THE POWER CORD IS FLASHING ON AND OFF... WHATS IT SOUND LIKE TO YOU!!!!!!!!!!!!!!!!!!!!

  • junior_f May 11, 2010

    Do you hear a beep when you turn it on and do you hear the fans start?

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No beep and no fan can be a dead circuit in the powerpack, however if you have quiet fans like i do (virtually silent) then it maybe the bios or a dead motherboard. I recommend opening the computer case, discharge your body from any static (usually you can do this by touching the metal side of the computer) look for the CMOS or BIOS battery (which looks like an oversized watch battery) take it out and leave it out for 1-3 hours. After that you will have to program you BIOS ( date and time mainly) if it turns on..if not, then more than likely you have a dead motherboard and/or you might want to take it to a qualified computer expert asap.

Posted on Jan 01, 2009

  • junior_f Jan 01, 2009

    oh be sure to put the battery back in...and also make sure you uplug the computer before you open it as it could cause a deadly shock

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I have a Mitsubishi WS-55515 that was unplugged, when It's plugged back in there is power but no picture and green light flashes then the power goes off. For reading other posts I believe it is th


if set has been unplugged plug it in and try to turn on===when power light goes off in seconds:

on the front of the set press and hold both the menu and input buttons for five seconds and release both.

power light will blink a two digit error code like 2 blinks, 2 blinks pause and repeat it several times.

what error code do you find?

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Screen went black. Shut t.v. off and tried to turn it back on. Power comes on, front light is green, and in about 3 seconds the t.v. shuts off, green light goes off. Was playing dvd at the time. Shut off...


MOST OF THESE SETS HAVE A SELF DIAGNOSTIC:

UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER LIGHT COMES ONFOR A MOMENT AND GOES OFF.

PRESS AND HOLD "device" and "menu"buttons on front of tv for at least 5 seconds and then release both together.


Watch for power light to blink in a sequence:

1 blink-then 2 blinks-------no error

2 blink-then 1 blink-------X-ray protection

2 blink-then 2 blink-------SHORT PROTECTION*******

2 blink-then 3 blink---------deflection circuit problem

2 blink-then 4 blink---------vertical circuit problem


******2, then 2 is most common---usually means one of the fuses that protectthe Convergence IC or IC's is blown---set will detect no voltage to convergenceIC and shut down.


SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES ANDTHEN TO GET IT TO REPEAT MORE YOUHAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.


IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM

let me know what you find--hope that you find 2 blinks, a pause and twoblinks--this is the most common and easiest to fix. SD TECH

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just as a guess try unplugging power to both modem and router, then plug only modem in first until connection light stops blinking and goes solid. then plug in router.

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you have a bad power supply, and the tv goes to protect mode, undo the back and look for any bulged or open cap, and replace it.
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I have an Acer AL1912 that when you plug in the ac, the green power light will blink for about a minute and a half then go solid. The backlight will come on and you can see a faint ghost of vertical lines...


If it is still in warranty call the manufacturer.
if not give more info elah4@zoominternet.net. May be somthing simple like a cable
shutdown computer unplug then disconnect the video cable on the computer from the monitor, plug monitor back in and turn it on, there should be a display that says no video source within a few seconds, if unit is working properly. shutdown and connect video again and then reboot computer. sometimes it just takes a compleat power disconect to reset things,

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Perhaps your computer is hibernating instead of going into standby which takes a little longer to wake up from. While you are playing plugs and cables it give it enough time to come out of hibernation.

When the computer is in this mode the USB ports turn off which disables keyboard and mouse so the only way to wake up the computer is to press the power button on the computer itself.

One tell tale sign a computer is in hibernation is that the power light on the computer will slowly blink.

I hope this helps.

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If the power light is blinking amber - The computer is receiving electrical power, but an internal power problem might exist.
Ensure that the voltage selection switch is set to match the AC power at your location (where power cord goes into unit).
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Power light blinking yellow after sitting a while


Unplug computer, disconnect all usb/monitor/internet, open it, hold power button until green led on the inside on the motherboard turns off, pop out the BIOS battery (looks like a big watch battery and use a small flathead screwdriver to depress the spring lock on one side), plug in computer, hold power button for about 20 seconds (must reset BIOS or something), let up on power button, wait 10 seconds and push power button. The computer should turn on. Wait for it until activity seems stable (1 min. or so). Push powerbutton to shut off.

If this has worked you have proven that it's not the power supply (it turned on).

Go buy a new battery (CR2032 3 volt). Unplug computer, open it, hold power button until green led on the inside on the motherboard turns off, pop in new battery, plug in (you should notice the power button blinking amber again), hold power button until it stops blinking (about 20 sec....again must reset BIOS or something), wait 10 sec., push power button. the computer should turn on. Wait for it until activity seems stabe (1 min. or so). Push powerbutton to shut off.

Now, close case, plug in all usb/monitor/internet/etc. Power up computer. You'll get an internal floppy drive error. Push F2 (maybe F1) to get into the BIOS settings and go to "drives" and turn off the internal floppy. Save and exit. The computer should boot properly now.

This seems to be a big problem with the e510, my theory is that this one small battery is the root of most of these failures (as these computers usually fail after 1-2 years), not the power supply or the motherboard (heck, when you replace the motherboard it comes with a new one of these batteries...a several hundred dollar piece of hardware, with a $5 battery that will actually fix it).

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Turning on i guess


It should work OK once you plug it back in. Note there are three places to check the power connection.
- The power pack has to be inserted firmly
- the cord that goes into the power pack
- the cord into the wall - be sure to check the wall outlet with a lamp or something to make sure it's not an overall power problem/breaker, etc.

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