R & R CF-28 touchpad

HI out there. I'm having a jumping mouse problem on a 1000 Mhz 28 and talked to tech support in Jersey and they said it sounded like a hdwe problem. The touchscreen works perfectly but the mouse goes insane when I try to use the pad. Just got this machine. SO, I whipped it apart and I thought removing the mouse pad would be a snap but it is, or somehow seems, glued in with some sort of nuclear cement. I wandered around in the archives and only came up with a few references to touchpads. Has anyone removed a touchpad? In deep. Thanks. Spark

 

Yeah, that is pretty aggressive glue, isn't it. I wish I had a caulk gun full of it, it would probably replace welding/brazing for many applications Anyway, because of this, I have found that it's pretty darn difficult to remove a CF28 touchpad non-destructively.

The good news is CF27s use the same model touchpad, and aren't glued in at all.

 

So no ideas? Just rip it out and hope for the best? I have two machines apart so I'm going to just put the guts back in the one I know the touchpad is good and see what happens. If it is still wild mouse syndrome I guess I can figure that the motherboard is the problem. I hope not. Thanks. Spark

 

I'll second what Gravitar said. I almost broke one getting it out, and I'm sure it is damaged otherwise now.

That glue could hold my ex girlfriend on a ceiling...

Gravitar; If you need some heavy welding done though, I just bought a new 210 amp Hobart

 

Well I'm in the process of putting one back together. Fairly tedious process. Gotta be alert. Cuts into my beer drinking. I wonder if we could get some of that glue from the factory?

 

Be just like the rest of us, drink while working on that toughbook

We'll have a hard time getting stuff from Panasonic directly, but you might have success with "The Right Stuff". It's pretty hardcore.

 

It's a kind of thin double-sided ultra sticky foam. Some of the touchscreens on the toughbooks use a thicker version. Running a flathead just under the edges (from the inside of the cabinet) usually works fine so long as you're careful not to scratch the screen in the process. After you get it out, scrape off the stuff from the cabinet 'cause it can sometimes cause it to go erratic all by itself.

 

Modly: Too much drink equals crossed wires, so I have to slack off a bit. Is "The Right stuff" a brand name of a glue??

Zeroflight: I think I will just, for now, replace the entire screen and cover as one unit as I have another one. When I remove the screen I will be careful to get all the old glue off.

I got the computer back together and the touchpad works perfectly so it was the pad that was bad and not the motherboard. I'm glad of that. When I put the new screen on I will find out if it was some conflict between the pad and the touchscreen but I have to wait a few days before I can do that.

Thanks everyone for your input. Bye for now. Spark

 

I meant the repair stuff on the touchpad. If you try that on the touchscreen, you'll run into problems.

I really need to get ahold of some busted 28s so I can make some videos on how to do some of the more difficult stuff like pulling off a touchpad without bending it and removing the touchscreen without screwing it up. Same with some of the retrofits.

 

Yup, "The right stuff" is a sealant made by permatex.

It's sticky stuff. I've been trying to get it off my hands for quite some time now

 

Any idea why this is so with the 27 and not the 28? I'm experiencing a very jumpy touch pad on a 28 Mk3 and thinking of replacing it from a parted-out 27 (500mhz, I think). Odd thing is, the longer the 28 is powered on, the pad is better behaved. No clue why though.

Any suggestions regarding dis-assembly and part access will be most appreciated. Many thanks in advance. Ron