Philips monitor I have a Philips 19" 190cw Monitor connected to my HP laptop via VGA. The monitor is mains powered. When I turn on my monitor it will display the philips logo then display the correct windows welcome screen...for about 1 second....then it will go blank as if switched off. the power indicator remains green indicating no problem with mains power supply. No error message appears stating any problem receiving video out put from my laptop. I then switch off the monitor and back on again...and the process starts again. I will repeatedly do this untill for no reason the monitor stays on and functions normally untill I switch off and come to use it again. During the one second period that the correct screen is displayed the monitor seems to be trying to focus. I have the correct resolution set. this is not a screen saver issue. Please help
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Re: philips monitor
Sounds like you have a bad inverter. You will need to open up the monitor to get to the screen to access the inverter board and replace it. If you are handy you can do the job yourself but if not then you will need to take it in to a computer repair shop to have it serviced. Depending on how old this monitor is, the cost of the repair maybe prohibitive.
There is probably a bad capacitor within the monitor that will not allow the picture to "hold" in the on configuration. This will need to be replaced. You can send it back to Phillips, or 17" monitors are pretty cheap these days. I would suggest a Samsung or BenQ. They both carry 3yr warranties.
nice anecdote, fixing things from far is not easy, a t.v.-technician right in front of the actual screen could tell more- but they don't come for free, alas. hope that people's idea about problem solving lead up to you fixing a problem yourself - hey this here is for free - to sort wxperts, one needs feedback! thx alot
On another question related to LCD monitors turning on and off within a few seconds, people suggested that aged/burnt out capacitors on the powerboard inside the monitor needed replacing. A relatively easy job for any technician to do.
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A) Graphics chipset B) Video Cable C) screen Inverter D) LCD screen
Let's diagnose, and find out.
A) Graphics chipset:
To start off with, the Pavilion dv5000 series of Notebook PC's; is NOT known to have a problem with the graphics chipset. The Pavilion dv2000 series, Pavilion dv6000 series, and Pavilion dv9000 series; does.
1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port; on the laptop. The VGA port is on the Left side of the laptop, and located towards the rear.
This is a general example of a VGA connector (port), and VGA Cable,
You can use a CRT type of monitor (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.
Turn the monitor on. If a CRT type allow it to warm up. Turn the laptop on. By factory default settings, the display should show on the external VGA monitor. IF not:
There are at least 3 display options available; 1) Internal monitor of laptop ONLY 2) Internal monitor of laptop AND external VGA monitor 3) External VGA monitor ONLY
Press, and hold down on the Fn key, and at the SAME time tap once on the F4 key. The F4 key is the Display Toggle-Over key.
Still no? Hold the Fn key down again, and tap once more on the F4 key.
No display on external VGA monitor, suggests a problem with the graphics chipset. (Most of the time it is a problem with the Mounting, of graphics chipset TO motherboard. If this proves to be your problem, state in a Comment )
Display on external VGA monitor means the problem is the Video Cable, or inside the Display Assembly. (screen Inverter or LCD screen)
B) Video Cable:
The Video Cable plugs into the motherboard, in an area under the Switch Cover.
(Left side. Switch Cover is the plastic cover above the Keyboard, and below the LCD screen. Has the Power On Button, LED indicator lights, etc in it)
It then loops by the left Hinge, and goes up into the Display Assembly. There is a small separate wire that comes from the main Video Cable, and connects to one side of the screen Inverter. The main part of the Video Cable goes on, to connect to the back of the LCD screen.
Click on image to enlarge. The wide connector you see at the top/left, connects to the back of the LCD screen.
The wide connector at the bottom/right, connects to the motherboard. The single cable (Wire) coming off at the bottom, connects to one side of the screen Inverter.
Just due to normal repeated opening, and closing of the laptop; the Video Cable may become pinched. This leads to it being pulled on, and may also lead to damage of the Video Cable. (Stretched/Broken wires)
Procedure is to Physically check the connections of the Video Cable. Visual inspection alone will NOT do. You need to physically see if you can plug the connection in tighter.
1) ALL power removed. Remove the AC adapter (Charger), and Battery. 2) Remove the Switch Cover.
[Switch Cover is just that. A Cover. I will give a link to a free Service Manual from HP Support, towards the bottom of this solution ]
Try to plug the Video Cable connection at motherboard, in tighter. Once done reinstall the Battery, and attach AC adapter. Plug AC adapter into power. Turn the laptop on.
Still no? Turn laptop off. (Hold down on Power On button) Remove ALL power again.
This time check the Video Cable connections at screen Inverter, and back of LCD screen.
The plastic frame in front of the LCD screen is the Display Bezel. Example,
Service Manual indicates to remove Display Assembly from laptop, in order to remove Display Bezel. IMHO this = NO. I think you can remove the Display Bezel, without having to remove the entire Display Assembly.
This video details removing the Display Assembly. Shows replacing the LCD screen.
What my concern is with removing the Display Bezel, is the integral Hinge Covers that are a part of it.
I believe the Display Assembly can be tilted far enough back, that the Display Bezel can be removed, and carefully ease the Hinge Covers out/off at the same time.
Why not just remove the Display Assembly? A whole lot less stuff to reconnect, after you have checked the LCD screen connection of the Video Cable, and screen Inverter connection.
After disconnecting the LCD screen from the Hinge Brackets, you just tilt the LCD screen forward, and check the Video Cable connection. Then slightly tilt the Display Cover back, so the LCD screen can rest against it, and reinstall power.
Connections are plugged in tighter, and this proves to Not be the problem, go on. (Don't forget to remove ALL power again)
The Screw Covers are made of synthetic rubber, or plastic. They are held in place by a type of rubber cement. I like to use a computer pick, (Much safer than a blade!), and lift up at the base of the Screw Cover.
I also like to GENTLY stick them to the Display Bezel for safekeeping. (They like to stick to the tool, your fingers, and it seems passing cars. "Oops, dropped one. Where'd it go? Hmmmm)
If you are careful with them you can reuse them. (Doesn't stick anymore? Apply a TINY dab of rubber cement to them, with a toothpick)
Screws removed, I suggest cut a piece of thick construction paper, that just fits the inside edges of the Display Bezel. Helps prevent scratching the LCD screen, from your fingernails, when you go to flex the Display Bezel, and remove it
The LCD screen is an Assembly of layers. They are held in the factory aligned position, by the metal Screen Frame which surrounds them.
There are screws that hold the Hinge Brackets TO the Screen Frame, and there are screws which when removed, will take the Screen Frame apart.
ONLY remove the necessary screws which hold the Hinge Brackets, TO the Screen Frame!
Timothy, post the laptop manufacturer, and the laptop's model number. It's on the bottom of the laptop, Usually in a sticker, or white Service Tag. This way I can guide you in more detail. Post back in a Comment.
A) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA connector, on the laptop.
This is an example of a VGA Cable, and VGA connector,
Could be on one of the sides of the laptop, or the back of the laptop. You can use a CRT monitor, (Looks like a small TV), or a flat LCD screen monitor, that has a VGA cable attached.
B) Turn the monitor on. If a CRT type allow it to warm up. Turn the laptop on. By default the display should show on the external VGA monitor. IF not;
There are at least three display options available: 1) Internal monitor of laptop ONLY 2) Internal monitor of laptop AND external VGA monitor 3) External VGA monitor ONLY
Press, and hold down on the Fn key, and at the same time tap once on the Display Toggle-Over key. Which one is it? Dunno. You didn't state what laptop manufacturer, and model number.
It is one of the F1 through F12 keys. Most of the time the F4, or F5, or F7 key. Has a monitor symbol on it, and sometimes a side arrow.
No display on external monitor still? Hold the Fn key down again, and at the same time tap once more on the Display Toggle-Over key.
If the display still does not show on the external VGA monitor, you have a bad graphics chipset on the motherboard. Usually means motherboard replacement. (There are problems with HP Pavilion dv2000 series, Pavilion dv6000 series, and Pavilion dv9000 series, in this area. There are other model series of laptops also, not just HP. There is a solution besides motherboard replacement)
C) IF, the display shows on the external VGA monitor, you have a problem with the Video Cable, or inside the Display Assembly.
I can help you find it, just need the laptop manufacturer name, and Model Number. Post back in a Comment.
The VGA connector will be on the side, or back of your laptop. For the VGA monitor you can use a CRT type monitor, (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable.
Laptop OFF, monitor OFF, connect the external VGA monitor to the laptop. Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on. By default the display should show on the external VGA monitor. IF not;
There are at least 3 display options. 1) Laptop internal monitor ONLY 2) Laptop internal monitor AND external VGA monitor 3) External VGA monitor ONLY
Press, and hold down on the Fn key, and at the same time tap once on the Display Toggle-Over key. (For an example HP's usually use the F4 key for a Display Toggle-Over key)
Display shows the same on the external VGA monitor? You have a bad graphics chipset.
[ Some laptops have been erroneously stated as having a graphics card, when in fact they do not. The GPU (Graphics Processing Unit) is soldered directly to the motherboard. This is Integrated Graphics.
The above is in Spanish, and you are on Page 2. (Parte 2) Posted for the photos. Scroll the page down, and look at the second, third, fourth, and fifth photos.
The CMOS (RTC) Battery is the round silvery looking object, with the red wire attached.
NOTE* There is a PROPER procedure for removing the RTC Battery. It isn't just remove the Keyboard, and replace the Battery.
1) ALL power is removed first. Remove the AC adapter (Charger) and Battery. (Main battery)
2) FOLLOW Anti-Static Precautions. Static shock your laptop, and you will have an expensive doorstop, or paperweight.
3) The Keyboard does NOT have to be removed all the way.
Once you post what Product Number you have, I can give you detailed information.
Before we begin; I would like you to attach an external VGA monitor, and see if the display is OK on it.
1) Laptop OFF, monitor OFF. Attach a VGA monitor to the VGA port on the laptop. Do not know what HP Compaq laptop you have, can't give you detailed info of where your VGA connector (Port) is on your laptop.
This is an example of a VGA connector, and a VGA cable,
External VGA monitor: You can use a CRT monitor, (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable.
2) Monitor attached turn it on. If a CRT type allow it to warm up. Turn the laptop on.
By default the display should show on the external VGA monitor. There are however at least 3 display options;
A) Laptop internal monitor ONLY B) Laptop internal monitor AND external VGA monitor C) External VGA monitor ONLY
Press, and hold down on the Fn key. At the same time tap once on the Display Toggle-Over key.
Which one is it? It is one of the F keys at the top of the Keyboard. F2, F3, F4, F5, and so on. It will have a monitor symbol on it, and a second one connected to it. (GENERALLY, it is the F4 key for HP laptops. That is GENERALLY )
Tap once and no display on external monitor? Hold the Fn key down again, and tap again on the Display Toggle-Over key.
It could be the laptop IS working, but there is a component, or components, that are bad for the internal monitor of the laptop. Display doesn't show on laptop's LCD screen.
Could be something as simple as a bad connection of the Video Cable to the motherboard, or to the back of the LCD screen.
Could be a bad Video Cable.
Could be a bad screen Inverter.
Could be a bad Backlight. For the above; a simple test,
Laptop on use a flashlight, and aim it at the LCD screen of the laptop. Shine the flashlight at various angles. Tell me what you see.
Primer: An LCD screen does not produce light. It needs an additional light source. A Backlight is the additional light source.
A Backlight can be a CCFL, or series of LED lights. (Present technology)
A CCFL is a Cold Cathode Fluorescent Lamp. Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale. (Average size is 2mm Thick, and almost as long as the LCD screen is high. 2mm is a Little more than 1/16th of an Inch, or about the width of this letter - N )
Unplug power. Unplug VGA cable. Remove back of monitor. (four small Philips headed screws along the bottom rear. Remove screws attaching Monitor to it's base. Carefully, lean the screen away from back of case. Gently unplug 25 pin cable from the screen. Connect AC power. Screen should power on Gray to White. Ble light comes on Blue.Flickers then changes to Amber. Reconnect VGA cable. Monitor should work. Close up the monitor in reverse order to opening it. If these steps don't solve your monitor, consider replacing as cost of repairs may shock you.