Question about T-Mobile Sidekick® 3 Cellular Phone

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Broken Lcd screen

The back light comes on but thats it. Everything else work but that.

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  • E-MONEY Mar 13, 2008

    MY BLACK LIGHT DOES NOT COME ON BUT THE PHONE WORKS.. HOW DO I FIX THE BLACK LIGHT??

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My sidekicl lx the screen is craked but everything works except the lcd doesent work.

Posted on Feb 23, 2008

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SupaMan is right about that, your flex cable may not be inserted tightly into the lcd screen itself.

Here is a procedure for checking that. It is complicated but worth a shot before you spedn 50 dollars on a new flip lcd assy.

Check Flex cable connection to LCD screen

Posted on Feb 14, 2008

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Well its obvious you might need a screen. but before you buy that, if you've opened yur sidekick before or know how to, then try taking out the screen and taking it apart. The flex cable may not be put or or jus a bit tight or scrambled a bit....

Posted on Feb 12, 2008

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Posted on Jan 02, 2017

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The LCD display screen is blank, back-light remains on. Powering off machine to power back on results in loud, abrasive rattle which seems to come from scanner. Unable to do anything with device.


When this happens the first thing you should do is check the connections to the LCD screen. However if it was working fine before this is most likely not necessary since they have to be connected properly to show anything. After that you would need to replace the LCD or the Logic board. If everything else is working properly then the problem is more than likely the LCD needs to be replaced.

Mar 12, 2014 | Brother MFC 6490CW InkJet Printer

Tip

Monitor LCD Screen Replacement With A Laptop Screen


This tip is for the typical PC tech with a shop full of dead laptops and monitors, looking to make an extra Monitor for bench testing malfunctioning PC's. Maybe you're a tinkerer and just have some spare parts laying around, and want to make something cool and easy. Either way, this tip is a fun way to make old dead parts work for you, rather than sitting in a corner gathering dust.

Replacing a Laptop screen is pretty easy if you take it slow.
LCD Monitor screens are actually easy to replace too, if you are careful not to crack anything getting one out and in again.

This tip doesn't address any of the typical replacement methods.
What this does is show you how to use a laptop screen in a standard Desktop LCD monitor.

Having already disassembled your Desktop monitor, and determining that one or both of your backlights is dead, you will most likely begin searching for sources of a new one. Before you do that, try testing both backlights in the dead monitor screen first by hooking them, one at a time to an inverter in a working laptop to verify that both are dead.

Most of the time, you will discover that only one light is dead, and this is where the fun begins.

At this point, you have a few choices to make.

1. Extract a working backlight from a cracked LCD, we all have a few of those lying around somewhere in just about any PC tech area.
2. With the extracted backlight in hand and the old LCD screen still attached to the monitors electronics, remove either of the sets of wires going to one of your backlights, leaving one still attached.
3. Now you can attach the light you extracted to the empty socket your original screens light attached to, while leaving the other one still attached.
4, Now, turn on the monitor and wait for the extracted backlight to come on, if it doesn't switch it with the other light socket plugged to your screen, and plug the opposite light wire back in.

This will do 2 things for you. First, it will be a quick test of your inverter, and second it will verify that you do or don't have at least one working backlight still functioning in your monitor.

Remember that with most LCD monitors, just one backlight can provide enough illumination for your screen to show a very crisp picture.
The problem appears though, when we decide that our existing LCD is dead because we dont see it light up.

The solution for this is to simply disconnect the dead light wire from the existing inverter plug leading to the LCD screen, then replacing that with a working light from the cracked screen without disassembling the LCD screen itself. If you did everything right, your old dead screen will be working as it should. Be sure you swap the backlight connecting wires so that your Bright/Dim controls work as they did before.

You see, most dual light inverters work the same as a standard twin tube household flourescent light. When one goes out, they both eventually stop working. So, adding that second light completes the circuit, then swapping light socket connectors turns your backup light tube into the primary light, instead of the secondary.

Now, if THAT trick didn't work, you can move on to the Laptop LCD trick, which is pretty much what you did before, except that the Laptop LCD usually only has 1 light tube. So for this to work, you can complete the lighting circuit by simply adding your spare backlight tube to the second open backlight connector, then installing the LCD to your monitor.

Many of these Laptop LCD screens are the same height and width as comparable Desktop screens, but they are also thinner, and will have to be glued or taped to the frame from the inside. Everything else connects exactly as the original screen, but may need to have wire added to the Laptop backlight wire so it reaches the power source.

I figured this tip was worth posting, since I just did this trick with a 15" polaroid HDTV/HDMI/HiDef Television/Monitor combo.
The model I have died a few months after it was bought new from Walmart, and the customer just didn't feel like paying $129 for a new screen.
Being the packrat I am, I just couldn't bear throwing it away, figuring that some day I would find a matching screen. As you can see, I got tired of waiting. The pictures of my project are below.

dc79966.jpg2e21d78.jpg

That bright line of light isn't the flash from my Camera, it's the flourescent light tube from a broken LCD screen placed on top of the steel housing.
The incidental effect of that light is that my back wall is a nice nitelite, and hooking up new components is a lot easier. Yes I could have blacked it out, but I think I like the added light behind the TV.

I hope this Tip comes in handy for you.

Bob S.

on Apr 08, 2010 | Computers & Internet

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Hi Sarah, the problem is in the lcd inverter which lives behind the screen bezel and beneath the lcd panel. The inverter is a small electronic board that connects the lcd panel to the motherboard and is responsible for powering the light bulb that lights the panel itself. These bulbs are built into the panel. The inverter is inexpensive to replace and only takes a short time to change out. In most cases you only have to remove the plastic belzel that surrounds the panel. Unless the laptop was banged around and the bulb has been broken or a wire harness has come loose from the inverter's socket, I would go with an inverter failure. You will know when the bezel is pulled, because a new inverter can be test fitted and run to make sure the screen lights before putting everything back together. If it is just a loose plug, then that can be accomplished at that time too without too much work. In most cases, remove the rubber bumpers because they usually hide the screws, remove all screws holding the bezel, then from the inside edge of the bezel pull the bezel up and toward the out side to release it from the lid assembly and then just work your way around the whole perimeter until the bezel comes loose.. Once the bezel is off you will see how everything is mounted and how the wire harness is plugged in.

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Replace that flexible wire and problem will be solved.
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Broken screen


If you mean by "broken" it does not light up, likely your inverter is shot.
All LCD screens depend on an inverter to light them up, and they are relatively easy to install. You do not have to replace the screen, unless it is physically busted. Same thing happens on largescreen TVs. How to tell? haven't a clue. I have heard that if you unplug your CPU for sufficient time, your password will disappear. I'm afraid that you may need to do a complete system install to start afresh if no one else hs any ideas--and check with HP--they are pretty helpful

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