Introduction: How to Convert a Laptop LCD Into an External Monitor.

Hello there. This is my first Instructable

A while back I was sitting around and wondering what to do with my dead laptop. I knew the mother board was fried but everything else was still in working condition. As a result, I decided to make an external monitor from my dead laptop and proceeded to do the research to find out if this was possible. Below is what I discovered. Unfortunately, there was no way to use the motherboard's VGA connector. The VGA connector on a laptop is used to connect to an external monitor. In any case the VGA connector is output only and wouldn't work for an external screen. As a result, I found that I needed to buy a controller board for the LCD screen, to make it work as an external monitor. This was the main cost but was still less than half the cost of buying an external monitor.

The controller board cost me about $42 not including tax and shipping. However, there are various types that cost less.

I also built a stand for the LCD panel but as you will see, I decided to go a different route.

The information below will illustrate the steps I took to convert my laptop LCD screen into an external monitor.

Step 1: Getting Started

Lets get started.

Materials needed::
Dead Laptop hopefully with a good and working LCD screen.
LCD controller board
Hobby electronics screwdriver
wire cutters optional
5 inch section of wood 2x3
two 3 inch sections of wood
self tapping wood screws
cordless drill
drill bit for drilling metal
Dremel and cutting disk optional

Note: if your LCD is damaged then don't proceed any further. This instructable will not fix a damaged LCD screen!

Disclaimer: Due note, I take no responsibility for your actions, implied or otherwise. I am not telling you to do anything, This instructable is informational.

Step one. Unplug the dead laptop from any power source AND remove the battery!. The laptop battery is located, usually, on the bottom and can be removed by sliding a release lever. These are lithium ion batteries and can hold a few Amps. The risk of shock might be minimal. However, there is no need to take the risk.

Step 2: Removing the Screws

Step Two. To Remove the LCD screen from the laptop, you will need to remove the screws. There are rubber pads on the front of the LCD screen to protect it when the laptop lid is closed. Behind the rubber pads are the screws. Find and remove all the screws holding the front plastic frame on the laptop lid. Keep track of the pads and screws as you will need them to reassemble everything.

Step 3: Removing the Frame

Step Three. Remove the plastic frame from the LCD screen. Here is where you need to be careful. The screws are not the only thing holding the plastic frame on the LCD screen! The plastic frame is snapped into place. Carefully pry loose the frame from the LCD screen. Pry it loose gently. Try to keep it as close as possible to the LCD panel while you are prying it loose because you may also find that you need to slide it to the left or right to completely remove it from the laptop. There is a small protrusion of the plastic frame where the hinge is. Because of this protrusion you need to slide the frame, in this case, to the right, to detach it from the laptop.

Step 4: Remove the LCD

Step Four. Locate and remove the screws holding the LCD panel to the laptop. These are located on the bottom. The screws are attached to a small metal hinge. this is the component that is attached to the keyboard frame.

Next you will need to remove the LCD screen. Note that there is a cable attached. This is the LVDS cable. It is best to take apart the rest of the laptop and unplug it from the keyboard. However, the cable can be cut at the bottom. Take care not to cut the two wires going into the inverter (that's the slim circuit board at the bottom.

Step 5: Removing the Cables

Once the LCD panel is removed, you can remove the LVDS cable and unplug the inverter at the bottom. Unplug the inverter from both ends. Do not cut it. The LVDS cable is taped to the back of the LCD screen at the top. It is the flat cable running up the back. Remove the tape and slid the cable down. Since you need to buy an LCD controller board, you will no longer need the LVDS cable the laptop came with or the inverter. At this point you should just have an LCD screen with a pair of wires coming out of it.

Keep track of the plastic front frame and the plastic backing. You will need them to resemble the LCD screen. On the other hand, you have different fingers, just kidding. On the other hand, you can buy a picture frame and put the LCD screen in the picture frame.

Step 6: The Cables

Here is a picture of the LVDS cable and the inverter detached from the LCD screen. Since we will be buying an LCD control board these cables will not be needed again.

Step 7: Buying the LCD Controller Board

Next, once you have removed the LCD panel. Flip it over and look for a model number on the back. You will need this model number to order the correct LCD controller board. I went to E-Bay and found one for $42.00. I bought the LCD controller board and then received an email from the seller requesting the model number of the LCD screen and manufacturer. This is because each controller board is flashed, (programed to run a specific LCD) I gave him my model number, LP171WX2 A4K1 and told him it was made by LG Phillips. Since the board was coming from China, I received my order about 2 weeks later. Due note to buy one with a power cord! The LCD controller board has the VGA input connection which allows you to connect it to another computer and use it as a second monitor or as a back up in the event the one on your working computer goes out.

I bought my LCD controller board DIY kit from e-qstore on Ebay. Here is a link:

http://www.ebay.com/sch/m.html?_from=&_nkw=&_armrs=1&_ssn=e-qstore&rt=nc.

Mention Instructables they might give you a discount.


The LCD controller board is real easy to connect. It comes with all the required cables, except a VGA cable which you will need, in order to connect your LCD to another computer. You can buy a VGA cable from Best Buy or a computer parts store.

Step 8: The LCD Control Board

The LCD control Bard comes with all the cables except the VGA cable which you will have to buy. Once you have received your kit, proceed to connect it to the LCD screen. Plug the LVDS cable into the LCD panel where you removed the original from. The two wires at the bottom of the LCD screen that were connected to the inverter need to be unplugged from the old inverter and plugged into the new inverter below. Then, plug the power in. Make sure that the LCD control board is not sitting on anything conductive, like metal or it will short and fry. Next connect the VGA cable to the LCD control board and plug the other end of the VGA cable to another computer. Make sure the computer is on before you plug in the VGA cable. At this point you should have the same image that is on the computer you plugged the VGA cable into, on the LCD panel.

To recap:
1. Plug the LVDS cable into the LCD panel.
2. Plug the LCD panel into the inverter. See picture.
3. Plug the transformer into the LCD control board.
4. Connect the VGA cable to the LCD control Board.
5. Connect the other end of the VGA cable to an operating computer.
6. Press the power button on the LCD control Board-it sits next to the LED.

Step 9: Prepping for a Stand

Next, I attached a 4 inch section of two by four on the outside back of the laptop lid. I needed this in order to attach my stand to the LCD screen. I used 5 screws and screwed them in place from the inside. I did splice and extend the cables going from the LCD controller to the inverter it came with just to have a little more room.

Step 10: Attaching a Stand to the LCD Panel

Originally, I built a nice wooden stand for my LCD panel but was not satisfied with it. So, I took a broken florescent desk lamp and dremeled off the section holding the florescent tubes, leaving enough metal to screw on to the two by four on the laptop lid. Before attaching the stand, I drilled four holes in the metal to make it easier to screw it on the two by four. 

Step 11: Attaching the LCD Control Board to the Back of the Laptop Lid.

Next you will need to attach the LCD controller to the laptop lid. To do this, screw in a few sections of wood from the inside of the lid. Then on the outside of the lid attach the LCD control board. Place the wood in an area where the control board can reach.

Step 12: Putting It Back Together

Next you will need to find all those screws you have been saving and reassemble the LCD screen. I also added some surgical tubing to the top springs for added strength.

By the way a store bought swing arm half the size of this one, I found, cost around $400.00. If you choose to use a swing arm like this one, go with the one that has a magnifier on it and dremel off the magnifier leaving enough metal to attach to your LCD lid. You need one of this caliber to hold the LCD screen. Swing arms with the light attached are not strong enough.

Step 13: The End.

Here is what it looks like on the stand. And Yes, I made the frame for the picture hanging on the wall in the background.

Step 14: Passing Thoughts

By the way, I did remove the web cam from the laptop lid, wired it to a USB cable, and turned it into and external peripheral. I wired the two microphones that I found next to the web cam and  turned them into external peripherals. I dremeled the batteries open and wired them into a 3 million candle power flashlight made from spare parts I had. I have a lithium ion battery charger, so it worked great.

I didn't like the first stand I made. I included some pictures of it above.

Since I was asked about the web cam, I though Should add it to the instructable. There is a nice instructable here at this site showing how to convert a web cam from an LCD screen: http://rntmns.com/2011/02/rebirth-of-a-webcam/

But be careful the guy that did the mod, reversed the power cables.

The USB cable has 4 Wires.

Pin 1 on USB 1. Red- VCC +5V
Pin 2 on USB 2. White- Data+
Pin 3 on USB 3. Green- Data-
Pin 4 on USB 4. Black- Ground

Note, I sourced the web cam from the LCD screen which was a dead HP DV 9000 laptop, working on Windows Vista, originally.

I'm not sure if the web cam wire colors change for different models. However, for the DV 9000 here is the color schematic.

1. Red wire from web cam goes to Pin 1 on USB, Red USB Wire.
2. Light Blue wire from web cam goes to Pin 2 on USB, White USB Wire
3. Black Wire from Web cam goes to pin 3 on USB, Green USB Wire
4. White or faded yellow looking wire goes to pin 4 on USB, Black USB Wire.

The web cam is now wired for plug and play. However, it only works on another computer running Windows Vista. There are no drivers for windows 7, yet. Since I don't have Windows XP, I don't know if it would work on it. Once you have wired it, open Skype on Vista and click on change profile pic. It will show two web cams in the drop down menu. If your web cam starts getting hot then you have revered the power cables.

I have attached some images of the web cam, it's slightly longer than the shift key on the laptop but about half as wide.

There you have it.

Mine works great on my Vista laptop. If you want to use it for checking plumbing pipes, I suppose you can put a small prism on the web cam aperture so you can insert the web cam in a pipe and view images directly ahead--this would be good for archaeology where you need to investigate tight spaces. 

Step 15: Last Pic

Last few pics.

Comments

author
GeekyAdam (author)2012-12-03

I'm so glad I found this... I have a nearly identical HP laptop that you used and recently noticed that it was overheating and too much work to fix up, but the big beautiful display works great and I was sadly thinking I'd be better off selling it rather than dissecting the entire thing to fix its overheating issue.
Now I have a new use for it!
Thanks!

author
zerofootprint3 (author)GeekyAdam2012-12-06

Actually, you can do One better. You can salvage the RAM, the Wireless card, the Batteries, the charger, the hard drive, the DVD disk player and sell them to people that need them on E-bay and Still keep the LCD screen for yourself.

I suppose I should have made this Instructable on how to salvage your laptop. I'll have to wait till another one dies.

author
JonathanA (author)zerofootprint32014-09-02

Genius! As an honorary "Red neck" (U.K. chapter, it's a good thing, honest) I'm putting your application in the post. You have given me the three screens I need for my simpit plus a lot of peripherals that I hadn't even considered. Thanks.

author
Re-design (author)2012-12-03

Very nice instructable. This instructable is the answer to a question that comes up about once a week in instructables questions and will get referred to often.

author
madhanxhat (author)2017-06-30

Hi , is LCD controller board common for all size LCD or different, I have 14" and 15.6 ".

Pls let me know.

author
DanielC227 (author)2016-03-05

i have a Toshiba satellite m115 -s1061 model number is PSMB6U-00G005 it has a dead harddrive but the motherboard is good and so is everything else will it work?

author
Jobo17 (author)DanielC2272017-06-01

You just replace the hard drive.

author
DanielC227 (author)DanielC2272016-03-05

i would love to be able to hook up my ps2 to the laptop screen

author
DanielC227 (author)DanielC2272016-03-05

i would also like to keep it in the computer case

author
maxh4 (author)2017-01-02

I have a lot of 15" laptops many of the same model, is it possible to use one adapter & power supply etc to connect more than one screen to it.and also how about using the laptop body itself as a shell to contain all the components???

author
Jobo17 (author)maxh42017-06-01

You could potentially rig up multiple monitors on one, but you have to deal with ribbon connectors. Also I bet the signal won't be as reliable being split up like that. And each screen would just be a duplicate of the others no matter what.

author
progmars (author)maxh42017-01-04

As long as model number and manufacturer of the LCD screen matches, you should be able to use the same adapter. But you will have to buy an LCD controller board and power units with support for multiple screens, and I'm not sure if those things can be found easily.

Using laptop body itself - sure, why not? Only your imagination is the limit here.

author
KylerM (author)2017-02-28

I scavenged a Samsung LTM215HL01 screen. I have been unable to find an LCD controller that explicitly mentions this model number of screen. Should I just look for a universal controller and mention the model number to the seller to see if they support it before I buy it?

author
Jobo17 (author)KylerM2017-06-01

Yeah, your best bet is to ask the seller before buying; if they say it's compatible but it's not, you'll just ask for your money back.

author
MatthewH283 (author)2017-04-07

fantastic instructions solving my first problem! i'm looking to build a external monitor and keyboard for my desk top in a laptop case so i can use it like a laptop in front of the TV. i'm going to connect it to a powerful desk tom machine for video and photo editing ( significantly cheaper hardware needed for the desk top over an equivalent laptop solution) . does any one know if you can re use the laptop keyboard and track pad? i can't find anything on it. as a simple solution i will probably look to retro fit a wireless keyboard / mouse pad into the laptop. but it would be cool if there were controllers available to drive the keyboard build in. As a phase 2 i'm looking to use a wireless hdmi connector for the monitor :-) Has anyone previously done this? Thanks

author
Jobo17 (author)MatthewH2832017-06-01

I'd say salvaging the keyboard and touchpad is not worth it, I'm sure all the electronics are on the motherboard. I personally can't deal with the latency of wireless displays.

author
bbielecki (author)2017-05-06

Thx for your instructable. It gave me the idea the make a portable retro gaming console based on a raspberry pi.

Do you think it could be possible to reuse the laptop battery to power the screen and the board and make a portable selfpowered sccreen ?

author
Jobo17 (author)bbielecki2017-06-01

Possibly, but I'm sure the battery doesn't hold it's full charge by the time you're salvaging it. Also you'd need to find which pins on the control board give you the access to all the cells in series. Also you'd need to figure out how to charge it. I'd just carefully rip open the battery casing and use the cells individually (if you have something like the iMax B6, I'd charge then discharge each cell to test which are still useable).

author
jmarkbacon (author)2017-05-22

I am basically brand new to these types of projects and the insides of computers. I'm embarrassed to say I cut the two wires that are needed to attach to the inverter. I have about 3 inches left coming out of the LCD. I have all the other parts I need except the little connector that the 2 wires were attached to. Can anyone advise if this is still salvageable? Can I splice the wires somehow to add a connector to plug into the inverter? If so, any advice on where I buy the connector?

author
Jobo17 (author)jmarkbacon2017-06-01

If I were in that situation I'd just bypass the connector and solder the wires directly to the bottom of the board where the pins stick out (obviously checking for shorts before powering it on).

author
Tomas Meyer (author)2017-03-01

Nicely done and very informative!! However unfortunately, by the time you add the cost of the LCD Controller card, various parts and time you could have bought a new inexpensive monitor.

author
CarlosA244 (author)2016-07-07

How do I go about reconfiguring or reprogramming the LCD controller so that it can be used for a diffrent model LCD display?

author
progmars (author)CarlosA2442017-01-04

I guess, you will have to find a universal programmable LCD controller but there still might be some caveats and not every LCD panel might have the firmware to support it.

author
Ancient1 (author)2016-11-28

Hi. Awsome !

what is needed to connect to HDMI (intsead of VGA)

Thanks for the instructable !

author
FritzK3 (author)Ancient12016-12-23

If you use the same link that he provided, the ebay seller has kits that include HDMI.

http://www.ebay.com/sch/m.html?_from=&_nkw=&_armrs=1&_ssn=e-qstore&rt=nc

:)

author
Ancient1 (author)FritzK32016-12-23

AWSOME
thanks !

author
MichaelL409 (author)2016-07-03

Question: Is there any reason you benefit from using an old laptop screen? I don't have one kicking around - so it seems simple just to use a flat screen HDMI monitor to do the trick. Thoughts?

author
FritzK3 (author)MichaelL4092016-12-23

The benefit to using an old laptop screen is basically just to save money. But if you already have an HDMI monitor then you're golden!

author
pavlos6868 (author)2016-02-03

Hey there, new guy here. Got my hands on an old dell ultrabook which was not working, but I know that the monitor is still good and wanted to try out your project, but when I contacted the seller of the controller board they told me that they do not support this LCD. Could you help? This is the LCD I have (https://www.laptopscreen.com/English/screen-part-number/B133EW05~V.0/). From what I understand it uses a different connector.

author
MichaelM1122 (author)pavlos68682016-12-17

Contact www.lcdparts.net. I think you have an AU Optics LCD. lcdparts has controllers for B133EW01~V.0 and V.04, W03, W04-V.4, and W06. They may be able to help with W05.

author
skilla21n (author)pavlos68682016-11-10

Your lcd is the newer one , maybe you shouldn't give up.

author
Courageraptor (author)2015-10-14

I have a Mac desktop that I took apart. The Mac is dead, but not the screen. Will these instructions work on it?

author
skilla21n (author)Courageraptor2016-11-10

They only concerns the lcd model number, you should give them the lcd model number.

author
Raghu Praveera (author)2016-07-26

I have LED Monitor. What i want to buy different controller board? or i can use LCD controller board for my LED monitor?

author
skilla21n (author)Raghu Praveera2016-11-10

Led monitor is led backlight while the older ones are ccfl backlight. But similar. The better way is to contact the seller listed in this article.

author
iswaditelker (author)2016-09-22

Thanks for this tutorial. I have a question.

Can I do the same thing for my unused 5" LCD smartphone. I have a dead smartphone which I know still has a good LCD screen. Can I use it as an external screen? is there any controller board for this small LCD? Thanks very much for the help.

author
jkenny23 (author)iswaditelker2016-10-16

Unfortunately I don't believe so, they use a slightly different interface called MIPI which requires a more complicated controller. Here is an example of a controller based on an FPGA: http://hackaday.com/2014/08/19/a-mipi-dsi-display-shieldhdmi-adapter/

author
LitonR (author)2016-08-16

this is

P_20160817_071615.jpg
author
LitonR (author)2016-08-16

I have acer laptop LCD.
model...B140XW01. V.9.
I want to buy a controler board .please inform me how to buy this.
email..(rkarmakar4@gmail.com)

author
bigrjsuto made it! (author)2016-05-20

Thanks so much for this! Now I can play around with another monitor!

2016-05-20 22.20.49.jpg
author
MatthewT118 (author)2016-05-20

Where do you connect the power cables to. Is it attached psu?

author
yurianh (author)2016-05-11

i can't find one for a macbook air screen (2013 11 inch

author
רוןמ (author)2016-03-12

hii.

Thanks dot this cool guide, but i have something to ask about it-

I found a product called "packed pixels", and i noticed that it can get its power from the laptop itself. How can i do it here? I want to use not just at home, but also on the move.

author
Jay139 (author)2016-03-12

What power source can I use and how much power is needed ?

author
WesleyB4 (author)2016-03-03

so basically to sum up this whole tutorial: buy a controller board

author
WesleyB4 (author)WesleyB42016-03-03

I wish most tutorials would just say that I've really learned nothing.. no diy or salvage just an advertisement

author
rod.adams.984 (author)2015-12-16

push air from outlet to intake < reverse flush > dri air Works best

will give you back coller laptop

author
rod.adams.984 (author)2015-12-16

clean your cooling fan .

thats probaly your cheapest solution

author
fad007 (author)2015-10-28

Excellent tutorial!!!

author
prashantmaharjan (author)2015-09-22

can i use normal lcd control board instead of LCD control Board...??