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Packard Bell 900W LCD monitor power-up and shuts off after 30 seconds

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

priyabrat
  • 123 Answers

SOURCE: Monitor not coming on - Packard Bell Easynote R4650

It's a dreadful way to start a day - you press the power button on your computer and nothing happens. Do not fear because all may not be lost! Follow these simple steps to determine why your computer won't turn on.

Note: It is very important to troubleshoot any issue beginning with the most likely and easily testable problem so be sure to follow these steps in order.
Difficulty: Average
Time Required: Anywhere from 10 minutes to a few hours or more depending on why the computer won't turn on
Here's How:

As silly as it may sound, the number one reason why a computer won't turn on is because it wasn't turned on! Before starting a sometimes time consuming troubleshooting process, make sure you've turned on every power switch and power button associated with your computer:
Power button/switch on the front of the computer's case.
Power button/switch on the front and/or back of the monitor.
Power switch on the power supply on the back of the computer.
Power switch on the power strip or surge protector (if you have one).

Verify that the power supply voltage switch is correctly set. If the input voltage for the power supply does not match the correct setting for your country, your computer may not power on.

Check for loose computer and monitor power cable connections. A loose or unplugged power cable is one of the top reasons why a computer doesn't turn on.

Perform a "lamp test" to verify power is being provided. Your computer isn't going to turn on if it's not getting power so you need to make sure that the power source is working properly.

A damaged power supply could be preventing the computer from being properly powered.

Do a quick test of the power supply by holding your hand behind the power supply fan located at the rear of the case. If the power supply is working, you should feel air from within the case blowing against your hand. If not, you may need to replace the power supply.

Tip: Is the power light on the front of the computer's case on? If you've turned the power switch on but the light is off, this is another good indication that the power supply is the cause of this issue.

Over time, internal components and the cables that connect them can wiggle loose which can often times result in a computer unable to power on. Try reseating the following and then try to power on the computer again:
Reseat the internal cables
Reseat the memory modules
Reseat the video card
Reseat other expansion cards

Reseating the CPU may also be necessary but should only be attempted if the reseating of all other components is not successful. This is due to the fact that this process is a little more involved and can run a small risk of damage to the CPU. This isn't a big concern if you're careful, so don't worry!

Check for causes of electrical shorts in the computer case. This is often the cause of the problem when the computer powers on for a second or two but then powers off completely.

Most monitors have a small light next to the power button that can change between various colors. If the screen is blank, this light is your main source of information about the monitor.

If this light is not on at all, double-check the power switch and connections (Steps 1, 2 and 3) and also make sure the monitor cable is securely plugged in to the video card port on the back of the computer case. If the light is still off, replace the monitor. If it comes back on, try starting your computer again - a loose or unplugged monitor cable may have been the issue all along.

An amber or yellow power light simply means that the monitor is not receiving any information from the computer. In and of itself, this doesn't tell us much.

On the other hand, if the light is amber or yellow, the computer power light is on, and the hard drive is active (making familiar sounds and the hard drive activity light on the computer case is blinking), the computer is probably starting normally but the video card is not sending information to the monitor. Replace the video card.

Beep codes (see Step 11) usually sound when a video card has malfunctioned but this is not always the case.

Is your computer making a beeping sound? Sometimes a computer will turn on just enough to play a series of beeps from the speakers.

These beep codes play in particular sequences and represent a specific problem that your computer is having. Troubleshoot the beep code to figure out what it's saying and then service the computer as necessary.
Tips:

Still can't get your computer to turn on? Let a community of computer support enthusiasts help out! Post the details of your problem in the Focus on PC Support Forums.

Posted on Jan 26, 2008

priyabrat
  • 123 Answers

SOURCE: Monitor not coming on - Packard Bell Easynote R4650

It's a dreadful way to start a day - you press the power button on your computer and nothing happens. Do not fear because all may not be lost! Follow these simple steps to determine why your computer won't turn on.

Note: It is very important to troubleshoot any issue beginning with the most likely and easily testable problem so be sure to follow these steps in order.
Difficulty: Average
Time Required: Anywhere from 10 minutes to a few hours or more depending on why the computer won't turn on
Here's How:

As silly as it may sound, the number one reason why a computer won't turn on is because it wasn't turned on! Before starting a sometimes time consuming troubleshooting process, make sure you've turned on every power switch and power button associated with your computer:
Power button/switch on the front of the computer's case.
Power button/switch on the front and/or back of the monitor.
Power switch on the power supply on the back of the computer.
Power switch on the power strip or surge protector (if you have one).

Verify that the power supply voltage switch is correctly set. If the input voltage for the power supply does not match the correct setting for your country, your computer may not power on.

Check for loose computer and monitor power cable connections. A loose or unplugged power cable is one of the top reasons why a computer doesn't turn on.

Perform a "lamp test" to verify power is being provided. Your computer isn't going to turn on if it's not getting power so you need to make sure that the power source is working properly.

A damaged power supply could be preventing the computer from being properly powered.

Do a quick test of the power supply by holding your hand behind the power supply fan located at the rear of the case. If the power supply is working, you should feel air from within the case blowing against your hand. If not, you may need to replace the power supply.

Tip: Is the power light on the front of the computer's case on? If you've turned the power switch on but the light is off, this is another good indication that the power supply is the cause of this issue.

Over time, internal components and the cables that connect them can wiggle loose which can often times result in a computer unable to power on. Try reseating the following and then try to power on the computer again:
Reseat the internal cables
Reseat the memory modules
Reseat the video card
Reseat other expansion cards

Reseating the CPU may also be necessary but should only be attempted if the reseating of all other components is not successful. This is due to the fact that this process is a little more involved and can run a small risk of damage to the CPU. This isn't a big concern if you're careful, so don't worry!

Check for causes of electrical shorts in the computer case. This is often the cause of the problem when the computer powers on for a second or two but then powers off completely.

Most monitors have a small light next to the power button that can change between various colors. If the screen is blank, this light is your main source of information about the monitor.

If this light is not on at all, double-check the power switch and connections (Steps 1, 2 and 3) and also make sure the monitor cable is securely plugged in to the video card port on the back of the computer case. If the light is still off, replace the monitor. If it comes back on, try starting your computer again - a loose or unplugged monitor cable may have been the issue all along.

An amber or yellow power light simply means that the monitor is not receiving any information from the computer. In and of itself, this doesn't tell us much.

On the other hand, if the light is amber or yellow, the computer power light is on, and the hard drive is active (making familiar sounds and the hard drive activity light on the computer case is blinking), the computer is probably starting normally but the video card is not sending information to the monitor. Replace the video card.

Beep codes (see Step 11) usually sound when a video card has malfunctioned but this is not always the case.

Is your computer making a beeping sound? Sometimes a computer will turn on just enough to play a series of beeps from the speakers.

These beep codes play in particular sequences and represent a specific problem that your computer is having. Troubleshoot the beep code to figure out what it's saying and then service the computer as necessary.
Tips:

Still can't get your computer to turn on? Let a community of computer support enthusiasts help out! Post the details of your problem in the Focus on PC Support Forums.

Posted on Jan 26, 2008

brighthm
  • 36 Answers

SOURCE: BIOS beep codes on packard bell home pc

You need to check your RAM, make sure it is seated properly.. this should fix the problem!

Posted on Oct 28, 2008

  • 3 Answers

SOURCE: monitor turns off after 4-5 seconds

hi every one, i hope this helps and am proud to say/or not that i am now using my philips php-19x (aka proview 900w/Mag LT916s Model 900p/ Xerox) and yes turn on the monitor 2 seconds screen goes black and the blue power light stay lit, but if you shine a torch onto the screen you can see the lcd display is working, and if you turn the power off and on the cycle starts again, like most of us we checked the web to no avail, untill yesterday. I have been playing with this monitor for 3 months on and off after a kind fellow gave me this monitor for free on uk freecycle and of course i checked all the caps on the psu/inverter pcb and more components all seemed fine checked the ccfl lamps by taking them out of the lcd panel (15 minutes to dismantle) both lamps where fine not orange, a nice bright light, and knowing that if the monitor started woking ok and the back lights did not fail it would run like this for ever until you turned the monitor off / video blanking so i was convinced that there was no fault with the psu/inverter board, and as i stated i found the solution at last (yeh) and here it is many that's to all on the bad caps forum and of course the main man -----barry wilkins-----

Re: Mag LT916s Model 900p 19" LCD dropping like flies

I have got to the bottom of this ,after I got one of scopes out (PM 97) the output of the TL 494 IC was disappearing .The IC seems to crash easily ,I think the oscillator on pins 5&6 actually stops.
I cleaned the whole board with an aerosol of PCB cleaner and heated up the PCB up with a small craft heat gun to quite hot .
I fitted a 0.01 mfd capacitor across the IC pins 12 to 7 to decouple the VSS supply ,because I felt the cause of the IC stopping could be interference based
The monitor now runs for all day with no sign of the backlights cutting out.
I found out this LCD display was made by proview.

Barry Wilkins
john r uk.

Posted on Nov 27, 2009

joecoolvette
  • 5660 Answers

SOURCE: Packard bell imedia 1402 will not boot up power

Sorry, I stepped out. Otherwise I would have answered right away.

Your power supply changes your household, (Residential),or business electricity, into three main voltages. Also converts it from AC to DC electricity.

1) 3.3 Volts
2) 5 Volts
3) 12 Volts

Each one of these voltages is a voltage power rail.
There's more involved than that, but for ease of explanation, we'll let this suffice.

A) Orange wires are 3.3 Volts. ( 3 and 3/10ths Volts. Sometimes the decimal point is hard to see on here )

B) Red = 5 volts

C) Yellow = 12 Volts

The only power cable you're going to be switching around, in my thoughts, is a 4-pin peripheral power cable.
Has a 4-pin Molex connector on the end.

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

Note that there is one Yellow wire, one Red wire, and two Black wires.

If you have a bad 5 volt power rail, or a bad 12 volt power rail, all the peripheral power cables will be effected.

Won't do you any good changing them out.

They all derive their power from the same source.

I understand your reasoning, and it looks logical, huh? But as you can now see, it doesn't affect anything changing peripheral cables around.

The blinking Power On light indicates you have a bad power supply.
I can't find any documentation on Packard Bell's website to give you, to substantiate my statement to you.

Otherwise I would.

To test my claim.
Do you have another power supply of the same style, and has the right amount of power cables? Also should be at least 200 watt.
You're just going to use it for a test, not as a replacement power supply.

No?

You could conduct a voltage test of the power supply, but if the fan doesn't even spin, the power supply is kaput.

Does the power supply's fan spin?
If so we can go on to do a voltage test.

This will require a multimeter.
The multimeter is set to the 0-50 Volts DC scale.

An economical, but decent enough multimeter, can be purchased in a multitude of places.

An auto parts store is one place.
Radio Shack is another.
There are several stores that carry affordable ones.

Average price for a decent enough multimeter for this test is around $10 to $15.

If you do not wish to use a multimeter, there is also the option of using a simple to use power supply tester.

This is one example, and an example of where to purchase it,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1647108&CatId=1107

Again, this is if the fan on the power supply spins. There is the rare occasion that the fan on the power supply will fail, and the power supply will work, but this is not one of those rare occasions.

Also, if the power supply fan spins a few times, then stops, the power supply is shot.

What leads to power supply failure?

A) The power supply was a low quality item installed by the computer manufacturer.
Saved the manufacturer money.

50 cents to a dollar saved, times 50,000 computers, or more of that model, adds up in a hurry.

B) The computer is dirty inside. Computers need to be kept clean on the inside, as well as their power supply's, on a regular basis.

Inside a Power Supply is a Heatsink, or more than one Heatsink.
A Heatsink is typically constructed of a flat metal base, that has tall fins protruding up from the base.

The metal base absorbs heat from whatever object is placed against it, and the heat is radiated up into the fins, where it is dissipated away.

Air flows through the fins, and helps carry the heat away.
(There is a Heatsink on top of the Processor also)

A Power Supply also has a fan.
The fan draws air into the Power Supply through the computer case, then pushes the air out of the back of the computer case.

The air drawn in through the computer case, helps to keep the hardware components inside the computer case cool, as well as the other fans that are implemented. (Computer case fan/s, Processor fan)

It also helps to keep the hardware components inside the Power Supply cool.

When the Heatsink fins are clogged with gunk, and the fan's blades, center hub, and surrounding shroud, are clogged with gunk, the cooling capacity of the Power Supply drops tremendously.

The Power Supply hardware components heat up.

Heat = Wasted Energy
The Power Supply tries to keep up with the demand for power, but with the energy loss due to excessive heat, the Power Supply hardware components eventually fail.

Typical SMPS used in a computer. (Personal Computer)

http://en.wikipedia.org/wiki/Switched-mode_power_supply


Posted on Mar 06, 2010

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Common failures in LCD monitors are due to bad caps as hown in my albums.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
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http://en.wikipedia.org/wiki/Capacitor_plague

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