Question about HP w1907 LCD Monitor

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Cable problem when i reconeect cable to monitor screen says that the cable isn't connected.

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Try attaching to other known working system or laptop.

Samir

Posted on Jan 03, 2009

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Acer flat screen monitor


acer monitor v193hqv power supply regulater ic burn so iwant circuit or ic no part no ic 802 problem plse solution

May 03, 2013 | Acer S202HL LCD Monitor

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Plugged in my emachine LE1938 to my dell without the DVI cable, screen displays 'no signal'. Shouldn't the monitor work without the DVI cable?


The DVI cable transports the display signal from the video card to the monitor.

I think what Ron is asking is if you used a different cable to connect the monitor to the computer. (I'm assuming you used an old 15 pin monitor cable or whatever those old cables were?)

Without getting into your BIOS:

So on your computer, you probably have an onboard video card (a video card built into the motherboard itself), and a dedicated video card (probably where you're seeing the DVI out).

It may be possible that you have the on board video card (with the traditional connection) disabled, when the dedicated video card is plugged in.

This isn't rocket science, so don't worry. Phillips head screwdriver is all you need.

Pull the side panel off your computer (assuming it's a tower... if not, it's the top panel). Once you have it off, you'll see that video card plugged into a slot on the motherboard, with 1 phillips head screw holding it in place (inside, near the back, where the DVI port is).

Pull the screw, and the video card should come out. From there, the BIOS should recognize your card is missing, and thus revert to using the onboard video card.

Sep 02, 2012 | eMachines E-machines flat screen CRT 17"...

1 Answer

Monitor will not boot up is reading no input signal


So either the computer isn't generating a video signal, the cable isn't carrying the signal to the monitor, or else the monitor isn't capable of receiving a video signal.To test this, first try a video cable that you know is good, in case your cable is bad, If it works with the other cable, the problem was your original video cable. If it still doesn't work, put your original cable back, and hook another computer up to the monitor. If the monitor makes the same message, the problem is with the monitor. If the other computer works when connected to this monitor, your problem was that the original computer isn't booting (which could be due to several reasons I will list below), or the video adapter is broken.Possible reasons for the computer not booting: bad power supply, bad power button, bad hard drive, bad memory, bad motherboard component. If you determine that it isn't booting, unplug everything except the keyboard mouse monitor and power cord, to see if that makes a difference. If it boots after that, something you unplugged was causing the problem, plug them each back in one by one, rebooting in between, and when it stops booting properly, the last thing you plugged in is causing the problem.

Mar 02, 2012 | Acer Computers & Internet

1 Answer

Gateway lcd monitor goes off and on!


First, check to make sure the input selection switch isn't stuck, after unplugging the monitor power cable. It sometimes can get stuck, or just become damaged.
If this isn't it, maybe it's time for a new monitor.

Feb 14, 2012 | Gateway FPD1975W 19" LCD Monitor

1 Answer

No video at power up


See if the problem is the graphics chipset before going any further.

If it isn't then the problem lies with the Video Cable, (Gateway = LCD Cable), or the Display Assembly.

The heading states Gateway LT2104u Netbook PC. This is what I'll be basing the solution on. However the main part of the solution, will apply to all laptops/netbooks.

1) Laptop OFF, monitor OFF, connect a VGA monitor to the VGA port (Connector) on the Left side of the netbook.

[ External VGA display port.
This is an example of a VGA connector, (Port), and a VGA Cable,

http://en.wikipedia.org/wiki/VGA_connector ]

The external VGA monitor can be a CRT type, (Cathode Ray Tube. Looks like a small TV), or a flat LCD screen monitor that has a VGA cable.

2) Turn the monitor on. If a CRT type allow it to warm up.
Turn the netbook on.

By default the display should be shown on the external monitor.
IF not;

A) Press, and hold down on the Fn key, and at the same time tap once on the F5 key.
(The Fn key is at the Bottom/Left of the Keyboard. The F5 key is at the Top of the Keyboard)

No display still?
There are at least 3 display options;

1) Internal monitor of the laptop ONLY
2) Internal monitor of the laptop AND external VGA monitor
3) External VGA monitor ONLY

You may have to hold down on the Fn key, and tap the F5 key more than once.

IF, NO display shows up on the external monitor, you have a bad graphics chipset.

[ Chip and Chipset are slang terms for I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_circuit

The GPU is the graphics chipset,

http://en.wikipedia.org/wiki/GPU

The GPU for a Gateway LT2104u Netbook PC is an Intel GMA950 ]

IF, display does show up on the external VGA monitor, you have either problems with the Video Cable, (LCD Cable), or the Display Assembly.

LCD Cable:

1) Connections;
The LCD Cable connects TO the motherboard, and TO the back of the LCD screen, in the Display Assembly.

IF, either connection is loose, you will have display problems.

Check both connections.
This requires partial disassembly of the netbook to access the motherboard side of the LCD Cable.

Also requires partial disassembly of the Display Assembly (Gateway = LCD Module) to access the connection at the back of the LCD screen.

2) Damage;
Observe the LCD Cable on the motherboard side. See if there are any obvious signs of damage to the LCD Cable's sheath.
The most susceptible area to damage is the area under the left Hinge.

However, the LCD Cable should be removed, and a continuity check of the cable should be performed with a multimeter, set to Ohms.

(By checking the connections, you are at a point anyway, that removing the LCD Cable should be no problem)

LCD Cable checks out OK?
LCD Module problem; (Display Assembly)

The LCD Module consists of the;
1) LCD Bezel,
2) Camera Module,
3) LCD Module Brackets, (Includes Hinges)
4) Microphone Module,
5) Wireless 3G Antenna,
6) WLAN Antenna cables, (Wires),
7) LCD Screen Assembly,
8) LCD Module Cover.

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 a series of LED lights.
(CCFL = Cold Cathode Fluorescent Lamp. Similar to Fluorescent lighting used in homes, and businesses)

The Backlight for the Gateway LT21 series of Netbook PC's, is a series of LED lights.

There is no screen Inverter that is replaceable by the consumer.
The repair is to replace the entire LCD Module.

http://support.gateway.com/s/notebook/2009/gateway/lt/lt21/LT21sp4.shtml

To conclude:
If the problem isn't the graphics chipset, (Motherboard replacement), and it isn't the LCD Cable, the problem is the LCD Module.

Gateway LT21 series of Notebook PC's, Service Manual, (Free),

http://www.tim.id.au/blog/tims-laptop-service-manuals/#toc-gateway

Go to where it states Gateway 400. Drop down to the second line, (EC54), and scroll across to LT21 in blue.
Left-click on LT21.

This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the file name (LT21) it may take up to 30 seconds, before the first page comes up.

{ You can save this Service Manual to your computer. This way you can burn it off to a CD disk, AND remove it from the computer to save harddrive space, and not have to temporarily download it again }

For additional questions please post in a Comment.

Regards,
joecoolvette

Jan 28, 2012 | Gateway LT2104u Netbook

1 Answer

PC SWITCHS ON BUT NO PICTURE


1. Check to make sure your monitor is on! Some monitors have more than one power button or switch - check to make sure they're all switched on.Check for disconnected monitor power cable connections. Your monitor might be working fine and your only problem may be a loose or unplugged monitor power cable.Note: A disconnected monitor power cable could be the cause of your problem if your monitor's power light is completely off.Check for disconnected monitor data cable connections. Again, your monitor might be turning on without a problem but no information can get to it because the cable that connects your monitor to your computer is disconnected or loose.Note: A disconnected monitor data cable could be the cause of your problem if your monitor's power light is on but is amber or yellow instead of green.Turn the monitor's brightness and contrast settings completely up. Your monitor might be showing information but you just can't see it because these display settings are too dark.Note: Most monitors today have a single onscreen interface for all settings, including brightness and contrast. If it turns out that your monitor isn't working at all then you'll likely not have access to this interface. An older monitor might have manual knobs for adjusting these settings.Test that your computer is working correctly by connecting a different monitor that you are certain is working properly to your PC. Your monitor may be working fine but your computer might not be sending information to it.If the new monitor you connected does not show anything either, proceed to Step 6.If the new monitor you connected does show information from your computer, proceed to Step 7.Important: When testing with the new monitor, make sure you use the data cable that came with it and not the one from your original monitor.Determine why your computer isn't sending information to your monitor. Since neither monitor works, you now know that the computer is not sending information to the monitor. In other words, you've proven that your computer is the reason that nothing shows up on your monitor.Chances are your original monitor is working fine.Test your original monitor with a monitor data cable that you know is working. It's possible that the monitor itself is working properly but it can't receive information from the computer because the cable that connects the monitor to the PC is no longer working.Note: If possible, test using the data cable from the monitor that you successfully tested with in Step 5. If not, purchase a replacement monitor data cable to test with.Note: The data cable on some older monitors are permanently connected to the monitor and are not replaceable. In these cases, you'll have to skip this step and proceed to Step 8 Replace the monitor.

Sep 27, 2011 | Mesh Matrix 6000+ DX PC Desktop

1 Answer

Hannspree 28" lcd only has


This is almost certainly a bad monitor and needs to be replaced, I wouldn't even troubleshoot it really. Basically half the screen matrix isn't getting any power most likely.
Some things you can troubleshoot if so inclined.
  • Hook the monitor to another computer (to rule out the current computer as a problem)
  • Replace the DVI cable (to rule out cable) although bad cables will typically cause color lose rather than part of the screen to be missing
Comment back if you need anything else.

Sep 08, 2011 | Hannspree HannsG HG281DP 28" LCD Monitor

1 Answer

My less-than-a-year-old Hannspree monitor stopped working soon after I bought it. I had spoken with a tech earlier and they suggested it was the cable up to the CPU. It isn't. I am now working at a...


Try this... Unplug the monitor from every connection its connected to, including the power.
- Press and hold the power button on the monitor for a minute..
- Connect it back to a different PC with a different cable firmly. It should work.

Jun 13, 2011 | Hannspree 22" widescreen LCD Flat Panel HD...

1 Answer

Hello so on my monitor i have two vga in slots and one of them works and the other keeps saying cable not connected and it stays a black screen so everytime i want to play on my xbox i have to unplug and...


Usually when a PC monitor like this one has multiple inputs, there is an input change button (much like the one on a TV). It might be hidden in a menu. Make sure that when you have both devices connected and turned on that you're switching to the correct input in order to view the other device. It's very unlikely that it will switch automatically.

If you're viewing the correct input and you're still not getting a signal from your Xbox, it could be a defective monitor connection. Try switching the cable first: use the cable that you know works and connect it to the second input to make sure that it's not a cable problem.

If the cable is fine but the second input still isn't working, the monitor input connector is probably malfunctioning. Depending on how long you've had it and if it's still under any kind of warranty, you may want to contact Acer for further support and see if they can either fix it or replace it for you.

Hope this is helpful!

May 08, 2011 | Acer P224W 22 inch LCD Monitor

1 Answer

My monitor is very blue suddenly. Is this the monitor issue and how do I fix it.


That could be the monitor or the video card, or even the cable connecting them.
If the RED signal dies, you are left with green and blue - so everything goes green/blue.
Check the connections at the video card and at the monitor.
Either try another monitor on your computer, or try your monitor on another computer to determine which is at fault if the cable isn't the issue.

Apr 26, 2011 | Xerox XR619DW Monitor

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