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Laptop system board

The system board, lcd, and key board are defective.  could that cause the following parts to be damaged: switch board, key board cover, heat sync, combo drive, cpu.  (the combo drive is broken because it would overheat to the point of smelling burning electronics and afraid of it catching fire I opened the drive and it was so hot it snapped) also the key board is warped near the power buttons from the heat. circuit city is claiming the extended warranty wont cover broken or defective parts?

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You have a dead short in electrical most probably everything is stuffed

Posted on Jul 26, 2008

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Posted on Jan 02, 2017

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My LCD monitor is white when i work?


I can tell that this problem may be related to the following:
1. Loose connection between the video cable and the LCD screen.
2. Defective LCD screen.
3. Defective motherboard (I assume the graphics card is integrated into the motherboard).
Most likely you still can use the laptop with an external monitor. Just connect the monitor to the VGA port on the back or side of your laptop and then switch the video output from internal to external mode.
On Toshiba laptops you can toggle between internal and external screens using Fn+F5 keys. Hold down Fn and press on F5 until you get video on the external monitor.
On IBM laptops use Fn+F7.
On HP laptops use Fn+F4.
It's possible that you have to use a different key combination on your laptop but you get the idea.
On some laptops, in order to be able to use the external monitor, you have to connect it to the laptop and then restart the laptop so the external monitor is detected by the laptop.
I noticed that in some cases the laptop screen may turn white because of poor connection between the video cable and the LCD screen. If you want to check this connection, you'll have to take apart the display panel because the connector is located on the back side of the LCD screen
Reconnecting the video cable may fix your problem.
If reconnecting the video cable doesn't help, most likely you have a problem either with the LCD screen or with the motherboard

laptop screen may turn white because of poor connection between the video cable and the LCD screen. If you want to check this connection, you'll have to take apart the display panel because the connector is located on the back side of the LCD screen
Reconnecting the video cable may fix your problem.
If reconnecting the video cable doesn't help, most likely you have a problem either with the LCD screen or with the motherboard
The best way to find out witch one is causing the problem is testing the laptop with another working LCD screen. Without this test you'll have to guess because as I mentioned before this could either bad motherboard or bad LCD screen.
You'll have to disconnect the video cable from the LCD screen (connector 2) and the inverter board (connectors 3 and 1). After that you connect another working screen and test video.
Hope it helps, else you will have to send the system for servicing to the manufacturer
Regards

Jan 27, 2011 | Acer Aspire 4315 Notebook

15 Answers

HPw19 monitor


If you are using a laptop, you might have pressed the button to switch from LCD to external display. The key combination depends on your laptop model, but it is usually Fn+F4 or some other function key. Look for a function key that also has an icon looking something like an external monitor. 48d40f3.jpg Try pressing function and that key a couple times to see what happens.

Jul 13, 2008 | HP w19 19" LCD Monitor

1 Answer

I recently got the lcd panel of my laptop fixed but now it's broken again. will dell fix it for me for free since it is within 30 days of when i sent it in for repair??


The answer is: Maybe
  1. Is the system still under warranty?
  2. The previous LCD replacement, was it a manufacturers defect, or broken accidentally?
  3. Is this failure a manufacturer's defect or accidental damage?
If the system is under warranty, any defect failure is covered. If the system has complete care accident damage coverage, accidental damage is covered.
If the system is OUT of Warranty, and it is a manufacturer's defect, it should be covered as repair parts are covered for 90 days or the length of the warranty, whichever is longer.
If accidental damage and out of warranty, you pay for repairs

Mar 12, 2010 | Dell Studio 15 Laptop

2 Answers

No diaplay


If the laptop appears to boot up and the hard disk LED flashes but the screen is black then the problem most likely a back-light problem.

You may have a faulty inverter or defective CCFL lamp. A faulty CCFL lamp may have the following symptom: Screen flashes on and off or displays reddish pink hue. Picture stays on in red and slowly be come normal. Picture flickering and/or with dim display or appear black. Picture flickers on and off. All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replace the CCFL lamp.
To determine if the video card or the LCD is faulty, connect an external monitor to your laptop and power the monitor up first then the laptop, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight. Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight or a faulty inverter that supplies high voltage to the CCFL lamp. Usually the CCFL lamp fails before the inverter.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out LCD Parts for service, parts, and DIY info Use this link to their WEB site: -
www.ladparts.net

Dec 07, 2009 | Acer Aspire 5500 5570-2609 Laptop

2 Answers

I have gestetner 2722ztd copier when i replace the explosure lap the copier dispalys error code e1 on the screen .how i clean/remove the error massege ? please help me


Please check after replace the continuity the expo lamp,expo thermofuse.The E codes are displayed in the copy counter.To display both digits of the E codes press the enter key.
E 11 - Exposure lamp error.Possible cause: expo lamp open,expo thermofuse open,power supply defective,main board defective.
E 12 - Exposure lamp error.Posible cause:AC drive board defective,main board defective.
E 13 =Zero cross signal error.Possible cause:main board,power supply defective,zero cross line open or the conector on the main board is not conected correctly.
For reset turn ON/OFF the main switch unplugged wait 10sec and turn ON or:turn ON the main switch,turn DIP switch 101-1 ON/OFF and turn the main switch OFF/ON.The DIP switch is located in the rear parts into the main board.

Sep 20, 2009 | Gestetner Office Equipment & Supplies

1 Answer

Sony hc-32 touch screen won't work


When touch switches become nonworking then mostly its cause of connecting flexible ribbon wires between LCD board and camcorder main board that got cracked so touch buttons signal does not go to camcorder system control. Need to replace that flexible wire by qualified camera tech.

Very rare cases I found touch buttons layer that is pasted and part of LCD becomes defective, do you see hard or deep scratch on LCD surface? if yes, then LCD screen will be replaced because touch button array is damaged.
Thanks.

Sep 16, 2009 | Sony DCR-HC32E DV Digital Camcorder

3 Answers

My screen stays black


Hello..

Now let's discuss what we should do when the laptop seems to be booting up without problems, the hard drive spins appropriately, and we even hear the welcome sound of the operating system, but we have no display on the LCD panel.
The easiest and most foolproof method for testing your LCD screen is to hook up the laptop to an external monitor. If the video output on the external monitor looks fine, this means that the problem is with the video connector, with your LCD panel itself, or with the circuitry that turns on the LCD.
What do we do? It all starts with disassembling the notebook. Find the video connector on the system board (if the video is integrated on the motherboard) or on the video card that is attached to the motherboard. Try re-connecting the cables. You may as well locate the display connector on the back of the end LCD panel. Re-seat that one too. This way you can be sure that the problem is not related to connections.
image002.jpgEvery now and then the switch located on the system board that turns the backlight of the LCD on and off can become stuck. If this is the problem then your LCD never powers on. There's a little switch that detects whether the screen of your notebook is open or closed. That's the one we're talking about. Try to push it down and hope it gets unstuck.
Disassembling the laptop to unstick this switch is an option, but sometimes you can get away with not taking it apart. Try lightly hitting that plastic switch. But wait, this isn't the only possible cause, unfortunately. Re-seat the other connectors and cables that are present around the LCD panel and the video on board (including the inverter).
All of the aforementioned can usually be fixed, but let's not forget about the screen itself. Sometimes the screen can become defective. Here we'll enumerate a few scenarios where the screen has gone bad and must be replaced: lots of vertical lines or bands appearing on the screen; half of the screen works fine but the other half stays either black (blank) or really white; the output on the screen looks blurred and changes to different patterns; and so forth. These are almost always signs of a defective LCD panel.
However, if the output on the screen is nothing but garbage, such as incorrectly placed special characters, shadows around the characters, unknown randomly placed marks of different colors, distorted or ugly-looking geometric patterns, or tiny little white dots all over the screen, then these are almost always due to the system board or the connection between the LCD panel and the video card. Re-seat the connectors.
All in all, these are some of the most common hardware failures. Nevertheless, before we finish this part, let's name some of the others that will be covered in the second segment of this guide, along with the promised system instability troubleshooting strategies. These include clicking noises coming from the HDD, which is the well-known symptom of a dying HDD. Thus, back up your important data as soon as possible and order a replacement. Overheating is also discussed thoroughly.

Hope it may helpful for you

ICmanServer

Aug 11, 2009 | Acer Aspire 5610-4491 Notebook

1 Answer

No Picture, No Sound While Watching


Resetting the TV
If the buttons on the remote AND the buttons on the TV case do not work (channels do not change and you cannot open or navigate the menu), the TV has stopped responding. Reset the TV as follows:

NOTE:
Some TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time.
1. Unplug the TV power cord from the power outlet.
2. Unplug any connected devices (DVD, Set-top boxes, etc...)
3. Press and hold the TV power button for five seconds.
4. Plug the TV power cord back into the power outlet and turn on the TV.
5. Open the on-screen menu to confirm that the TV is responding again.
6. Turn off the TV and reconnect the devices.
7. Turn on the TV.



LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:

Symptom: No picture on screen but LCD TV still has sound.
Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture
Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound
Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits
Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.


Hope it may help you;

Regards;
VOTIT

Jan 29, 2009 | RCA L37WD250 37 in. LCD HDTV

1 Answer

No picture


LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:

Symptom: No picture on screen but LCD TV still has sound.
Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture
Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound
Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits
Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.

This is a power supply problem. Try to check the fuses ,fusable resistor ,capacitor and transistor in power supply board.

Hope it may help you;

Regards,
VOTIT

Oct 01, 2008 | Olevia LT37HVS 37 in. LCD HDTV

1 Answer

Picture washed out, can't get it right


LCD TV TroubleshootingThe defective LCD TV may have the following common symptoms:

Symptom: No picture on screen but LCD TV still has sound.
Solutions: The problem is cause by defective inverter. Replacing ivnerter will solve hte problem. Symptom: Screen flash on and off between 1/2 to a few seconds, but power indicate light stays on and TV still has sound.
Solutions: The problem is cause by defective inverter. Symptom: Blue Screen but no picture
Solutions: The problem is cause by defective Main Board(AD Board). In some cases, this problem may cause by the defective Screen Controller board. Thsi board is mounting on teh back of LCD TV Scree. Symptom: Power light stays on but no display and sound
Solutions: The problem is cause by defective Main Board(AD Board) or Power supply board. Symptom: No Power or Power indicate light does not lits
Solutions: The problem could cause either by defective Power supply board or defective Main Board(AD Board). Symptom: Screen is half dim and half bright
Solutions: The problem is cause by defective LCD Panel.It needs to be replace.

Sep 21, 2008 | Akai LCT2715 27 in. LCD Television

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