Touchscreen crashes when using swivel

I have a CF18 with touch screen that operates fine until the screen is swiveled or moved. It is random but if your work the screen around a bit I can get it to repeat this failure.

Initially the touch screen stops working altogether. The PC is still functioning. If you are lucky you can use the mouse pad BUT more often than not the mouse becomes useless because it begins to act erratic.

I am presuming the cable that runs through the hinge may be at fault. Can someone please give me their thoughts on this.

If it is the cable I need assistance with a part number. I found a PDF manual on-line but the cable part number is not clear. I identified part K203 as the part I need but the description is not for the cable assembly.

Thanks in advance for the help

 

Gen... It sounds like a good diagnosis... I think it is your cable as well. Don't worry about a part number now... Just carefully take it apart and have a looksee. You may find an intermittant short that you can fix... Or a wire shorting to ground more likely.

I've seen this before...

 

Thanks for the quick reply.....

I have a fleet of these units in the field. In the past users have told me that they experienced this with other units but I could never replicate the problem. This is the first unit that decided to be brave enough to show the fault to me.

Since these cables obviously get a lot of movement I think it would be wise to keep one or two of them in stock. As these units age they will probably start showing similar problems. I cant really afford to have these units down for extended periods. It would be nice to just swap the cables and go.

Does Panasonic have a resource that can lookup that part number?

Thanks

 

You can call here:
Heartland Services

for other links, check the other resources in this thread:
http://forum.notebookreview.com/pan...sting-ultimate-toughbook-resource-thread.html

 

I'm not 100% But it looks like the part number is DFJS823YA...

You can always call Heartland at (913) 685-8855 and they can walk you through it.

I'd still tear it apart to be sure.

 

One of the red wires is broken inside the loom. I fixed one once and it's still doing fine. A real pain especially getting it back in the duct tape???? The break was at the swivel. I traced that wire and cut near the mobo and up in the screen. (did not want the splice in the part that wraps around the swivel)so spliced it twice.
Heat shrink tubing at the splices would have been neater. I used hot glue and tape.
Just saying ----not recommending.

Jeff

 

Thank you all for your quick responses and tips.

I will do the repair via a splice for now, but I will still order one or two harnesses for future incidents.

Thanks again.

 

I thought of this later.
I was doing reverse engineering so unwrapped the red leads.
IF you can get the one lead identified with an ohmmeter and IF you have access to a heavily insulated single wire near the same size, how about doing the splices with the swivel intact and running the single lead piggy back on the silver wrapped red wires. There is barely room.
TOTALLY FWIW. Or buy a little more tiny heat shrink and use it for insulation on the new single wire where it wraps around the swivel.
Brain?storming.

 

If you have fleet of these and you don't plan on upgrading in the near future I would order at least 2 because the S/H charge is very high $30.00+ but it's next day shipping and the girls there are very good to deal with.

 

Yep, ordered two spare cables today.
They cost @ $43.00 each.
But I needed to order a bunch of other things like latches, screws and covers anyway.
It all worked out in the end.

Thanks for the help.

The part number listed by 'Toughbook' in a previous post was the correct part number for a CF-18 with touch screen. (CF-18KHHZXBM)