CF-18 touchscreen problem

Have a CF-18FJAZXBM with a problem touchscreeen that only works up and down on the right side edge of display. No left to right movement.Have done the drivers a few times and no help. XP Pro sp3 OS. Worked good at first then added mouse and keyboard trying to go back to no M and KB, help please pulling my hair out

 

Do you have the original restore CD?

When was the last time it worked properly and in what software environment? My experience with SP3 was that sometimes it wasn't as perfectly backward compatible as it should be. SP2 may work.

 

No CD's came with this unit it doesn't have a drive in it. Uninstalled SP3 but still get an "error Dtm" Parameter error when you calibrate the touchscreen.

 

That is a hardware issue for sure ,
No software fix will work
Some connections on, or to the touchcreen panel are bad

 

If you could dismatle the touchscreen glass panel and its double sided tape on it(competely out on its bezel). Here is I want you to do. Apply some heat(heat gun, hair dryer or the hot air on the reflow station), a heat not to burn the area and cable. A very mild one and then press both side untill it cool down. Do that on one area at a time untill all side been completely been done. I have a success on doing this on the 29 but it need a lot work and its a pain on the ...It need patience though and I have a lot of those anyway, Lol..

ohlip

 

When you run the cal test it works fine until you finish the calabration and hit enter key, thats when I get the error message. It sets all 9 points fine but will not enter the test info.

 

As Tomcat said; its a hardware issue not a software issue. What we call it is a "ts syndrome".

 

Ok took the display apart and cleaned the ribbon tape to touch panel and all works good after recalabrating. Thanks for all the info and help. Any one need a touch display for an CF-18?

 

But I'm sure it will gonna go back soon again. You just released some pressure from the LCD and ts glass panel when you dismantled the LCD. Beleive me, I've been on this.

teo

 

Yes
I will show up again for sure, you just as Teo said moved it enough to have a good connection
Report back when its messed up and we can say
I told you so lol

 

Hi,
I have exactly the same touchscreen problem on a cf18.
Does not calibrate and only goes up and down the right hand edge.
I took the screen off and identified the 4 way ribbon cable connecting the touchscreen. However I cannot get the calibration back. I can't understand the recommendation from Ohlip.
"If you could dismatle the touchscreen glass panel and its double sided tape on it(competely out on its bezel). Here is I want you to do. Apply some heat(heat gun, hair dryer or the hot air on the reflow station), a heat not to burn the area and cable. A very mild one and then press both side untill it cool down. Do that on one area at a time untill all side been completely been done. I have a success on doing this on the 29 but it need a lot work and its a pain on the ...It need patience though and I have a lot of those anyway, Lol.."
are you suggesting take the touchscreen out and replace it?
Or is there some way to get the ribbon cable to make good contact with the touchsceen ( ie press it down using heat??)
arw

 

Ohlip is saying carefully remove the TS panel from the front bezel with it's adhesive gasket. Some advocate using a dental pick. So you end up with three layers of plastic/glass. That would be (from the front) screen protector, heavy glass/plastic, rear plastic layer.
Go all the way around the edge and heat and press together the three layers. The back two are the ones that count. The adhesive gives up over time. Pay close attention to the area where the ribbon cable connects.
What you are attempting is to re-activate the adhesive. I would say you need to get it fairly warm as in high temp on hair dryer. Heat a section, press together until cool and move on. Patience is the key.
I saw a clip where a young guy was using a barbecue lighter to fix a small TS. Not recommending it just stating the fact.

I thought of using a roller like an ink pad roller to press the sections together. They are hard rubber aren't they? like this: Ranger Inkssentials Inky Roller Small Ink Brayer | eBay

Let us know and welcome to the nuthouse.

Sadlmkr.....don't melt the plastic

 

OK thats sort of what I thought, but why take the touchscreen out of the bezel it seems quite well stuck in there?
Why not just apply the heat to the screen in the bezel. The LCD comes out nicely from the back, looks like its not stuck to the touchscreen, but spaced off with single sided adesive tape, so one could apply pressure from the back edges of the touchscreen with gentle heat from the front?
I'm assuming you apply heat to the glass front not the plastic.
Is the problem that you can't get the heat close enough to the edge without first removing the touchscreen from the bezel?
If I pluck up enough courage I may give it a go before attempting to remove the touchscreen from the bezel. Not much to lose.
arw

 

First try with hair dryer on first heat of three settings did not work.
Found a very interesting manual on touchscreen integration http://www.danielsoneurope.com/files/pdf/integration_guide_en.pdf
It seems touchscreens are frought with potential problems in this area.
It also seems to me that the touchscreen is way too well bonded to the bezel against the recommendations in that document (does not allow expansion of the different layers), unless some prior owner replaced the touchscreen and used too strong an adhesive here.
I think the problem almost certainly occurred when in a Tractor cab with large glass windows, basically a greenhouse, and the unit got very hot perhaps distorting the bezel or touchscreen layers.
I am therefore now wondering whether this touchscreen is robust enough for the application. The idea being to use it in tablet mode with no keyboard.
Perhaps an external touchpad mouse would be more reliable?
arw

 

There are three types of most common problem on Ts. Your comment about my post a long time ago is only the one out of the three. The most common is not yet publish on how to repair it properly without destroying the whole panel. there are only a few member here know how to do it. But it cost so much pain before he know the whole thing, Lol. Don't you know why? Let it put it this way. A while back the cf-29 on EBAY with working ts cost arount $500 to $600.00 while those non working ts is only $200.00. As a buyer which do you think is the best for a buyer that know how to fix it. I only give my instruction to the people I know and working hard to fix it. Even those member that I know for long time( sr. citizen of this forum, Lol) doesn't even know or where to start to fix the whole thing

The biggest beneficiary If we publish the whole procedure is not the member or you. Those lurker here with stock file of the machine and few who will come here just to flame the discussion and sometime an insult to the senior member while their item and idea originally came from this forum. But I know for the fact that its only a matter of time.

Go to ebay and see who are those seller with modded toughbook. All of them and there Crap, Like mine(as Rob said) came from here.

ohlip

 

Yeah! What HE sed!

mnem
Welcome to the SUCK.