I have an advent 7003 15" laptop tft screen .I would like too use this
as a second monitor for desktop.Can anyone advise on how I can do
this.Colour codes ,PSU and inverter info ? Any help is welcomed.

The only feasible way to do it is to get a video capture card for the
laptop and then display it on the laptop monitor. It assumes you have
a working laptop, that it's fast enough for the purpose, and that you
want to put more effort into it than buying a second monitor.

trudy wrote:
I have an advent 7003 15" laptop tft screen .I would like too use this
as a second monitor for desktop.Can anyone advise on how I can do
this.Colour codes ,PSU and inverter info ? Any help is welcomed.

"trudy" wrote in message
ups.com...
I have an advent 7003 15" laptop tft screen .I would like too use this
as a second monitor for desktop.Can anyone advise on how I can do
this.Colour codes ,PSU and inverter info ? Any help is welcomed.


Laptop screens are not compatible with the ouput from PC's graphics card,
neither DVI nor analogue VGA. They were never designed with connection to a
desktop PC in mind, and I don't know of any 'off the shelf' interfaces to
achieve such a thing. If you are at an advanced level of electronics you
could conceivably build an adapter to convert the analogue VGA or DVI
signals to whatever the laptop screen uses, but the R&D required would far
outweight the cost of a proper new 15" TFT monitor!

I did once see a laptop screen which used differential signalling (TMDS I
think) which may have been similar to the DVI standard, but even then it
probably wouldn't have worked. For starters, AIUI the graphics card needs to
know about the screen that's connected to its DVI port, details like pixel
clock etc. A laptop screen would be unable to communicate its spec to the
graphics card and therefore would not work.

As for colour codes, these are manufacturer and model specific and in any
case would not help you acheive what you want to do.

Dave

The screen is complete with housing. The whole thing is about 1cm thick
making it a very nice compact screen.I have the rest of laptop if I did
need any additional components.
However I have taken screen out of housing too find inverter at bottom.
I would think that by connecting power and vga or dvi lead too panel
nothing further is necessary.
The panel is a 15.1" XGA TFT panel nice,compact and surely worth
saving.
The panel is marked Torisan TFT-LCM TM150XG-02L02A

"trudy" wrote in message
oups.com...
The screen is complete with housing. The whole thing is about 1cm thick
making it a very nice compact screen.I have the rest of laptop if I did
need any additional components.
However I have taken screen out of housing too find inverter at bottom.
I would think that by connecting power and vga or dvi lead too panel
nothing further is necessary.

Did you read *any* of the technical reasons I gave why this will not work?
The signals are incompatible as I already stated. I'm sorry if it isn't what
you wanted to hear, but again- There is no DVI input or VGA input into a
laptop's LCD panel, so you will not be able to achieve what you want. The
laptop's graphics system has a special interface the panel uses, you cannot
just attach a DVI cable to a laptop panel, plug it into a graphics card and
expect it to work, it simply doesn't work like that.

You're probably thinking your laptop panel has RGB and sync inputs, am I
right? If so, you're way off target. No such inputs exist on a laptop panel,
so how do you expect to get it working? The most you will achieve is getting
power to the screen, which is straightforward enough. But what you are
trying to do is like attaching a TV aerial to a computer monitor and
expecting to get a TV picture on it!

Of course, you may disregard or disbelieve the advice you requested and were
given, your decision.

Dave

Sorry Dave
I have been multiposting without realising that this is not acceptable
or best practise.I had posted this as an addition too my first post.I
had not read your reply till now.I have realised 3 mins later I posted
my addition.This was a coincidence.
Several people have said it cant be done easily.
You are right in saying it was not the answer I wanted.I had thought it
couldn't be too complicated.
I have the laptop motherboard, is the required interface on this .
It does surprise me ,I had thought laptops worked exactly like desktops

It is looking like I have to and will accept your explanation.
I thank you for your time.

"trudy" wrote in message
oups.com...
Sorry Dave
I have been multiposting without realising that this is not acceptable
or best practise.I had posted this as an addition too my first post.I
had not read your reply till now.I have realised 3 mins later I posted
my addition.This was a coincidence.

No worries, and thanks for the apology, but it's not necessary. :-)

Several people have said it cant be done easily.
You are right in saying it was not the answer I wanted.I had thought it
couldn't be too complicated.
I have the laptop motherboard, is the required interface on this .

It is part of the graphics system and part of the motherboard, nothing you
can do there. Modern laptops do not have seperate graphics cards, and even
if they did they wouldn't fit into a desktop PC.

It does surprise me ,I had thought laptops worked exactly like desktops


Well, they basically do. However, as the display is built in and part of the
system, there is no need for it to be standard analogue video or even DVI.
It takes, for want of a better description, 'raw' video information directly
from a chip in the graphics subsytem.

It is looking like I have to and will accept your explanation.

Well, you could always try and get the data for the LCD panel from the
manufacturer. It's possible it uses a protocol similar to DVI (differential
signalling) and I've seen a laptop screen like that (a Compaq about 4-5
years ago IIRC). However, there would still be other rather large obstacles
to overcome. I'm confident if you really look into it you'll end up thinking
'to hell with that idea!' ;-)

I thank you for your time.


No problem.

Dave

I'm confident if you really look into it you'll end up thinking 'to hell
with that idea!' ;-)

Yeah I had this idea a few years ago and I had an IBM netvista LCD pannel
and it used differential signalling.. After a couple of weeks of research
and trying to get it working all I managed to do is make the backlight
work.. I said the hell with it and sold it on ebay.. : )

trudy wrote:
The screen is complete with housing. The whole thing is about 1cm thick
making it a very nice compact screen.I have the rest of laptop if I did
need any additional components.
However I have taken screen out of housing too find inverter at bottom.
I would think that by connecting power and vga or dvi lead too panel
nothing further is necessary.
The panel is a 15.1" XGA TFT panel nice,compact and surely worth
saving.
The panel is marked Torisan TFT-LCM TM150XG-02L02A



The panel is worth saving, but only for use in another similar model
laptop. People ask this all the time but there's really no easy way to
connect one to anything, they use custom programmed driver electronics
specific to the particular laptop.

trudy wrote:
Sorry Dave
I have been multiposting without realising that this is not acceptable
or best practise.I had posted this as an addition too my first post.I
had not read your reply till now.I have realised 3 mins later I posted
my addition.This was a coincidence.
Several people have said it cant be done easily.
You are right in saying it was not the answer I wanted.I had thought it
couldn't be too complicated.
I have the laptop motherboard, is the required interface on this .
It does surprise me ,I had thought laptops worked exactly like desktops

It is looking like I have to and will accept your explanation.
I thank you for your time.



The required interface is on the laptop motherboard and could in theory
be relocated to a PCI card but it would take some pretty advanced
soldering skills to work with the high pin count surface mount stuff,
I've seen a few people breadboard with it before but it's certainly not
easy.

trudy wrote:
I have an advent 7003 15" laptop tft screen .I would like too use this
as a second monitor for desktop.Can anyone advise on how I can do
this.Colour codes ,PSU and inverter info ? Any help is welcomed.

Sure.

Go to http://www.earthlcd.com

They have PCI and analog-digital controller cards for LCDs.

It'll cost more than buying a nice complete desktop LCD monitor.

-Keith

I think if your laptop actually ran you could use this --
http://www.maxivista.com/


"Keith Jewell" wrote in message
oups.com...

trudy wrote:
I have an advent 7003 15" laptop tft screen .I would like too use this
as a second monitor for desktop.Can anyone advise on how I can do
this.Colour codes ,PSU and inverter info ? Any help is welcomed.

Sure.

Go to http://www.earthlcd.com

They have PCI and analog-digital controller cards for LCDs.

It'll cost more than buying a nice complete desktop LCD monitor.

-Keith