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View Full Version : G74sx touchpad, tape?



elguapo75
03-08-2012, 02:22 PM
Ok, so I have the crazy erratic touchpad issue with my new laptop I got a week ago. After reading the forums about removing tape and residue, and the unsuccessful RMAs and driver/bios updates, my laptop is currently disassembled. There is a small piece of grounding tape, and the rest is foam tape (insulator maybe). Do I remove both of these and then clean the residue? I don't remember reading anything about the foam.

Thanks in advance.

BrodyBoy
03-08-2012, 08:18 PM
The information you've read about the G73 doesn't apply directly to the G74, as the installation is quite different. The foam backing can stay....the issue is the failed ground, caused by that piece of grounding tape losng its contact, at least intermittently.

So what the TP needs is a better ground contact between its grounding pad and the chassis. There are a number of ways to secure a better contact....backing new tape with a piece of foil or wire, fabricating a hard metal grounding bar, etc.

But unfortunately (based on my experience with this problem on two different units), modifications made after the ground failure has occurred, after the erratic behavior has started, won't permanently fix the problem. I've become convinced that, at least in these G74 TPs, once the ground has failed, the TP may be permanently damaged and is no longer able self-calibrate properly. So in my third G74, I took pre-emptive action and re-grounded the TP before I ever turned it on....yes, I disassembled a brand new computer right out of the box! There's no way to know whether this one was ever defective to begin with or whether my modification saved it from failure, but it's never had the erratic behavior/failed ground issue.

Since you have yours open, go ahead and try to replace/repair the ground connection between the TP and chassis. It's worth a try. BUt if the erratic behavior eventually resumes, I would suggest you contact Chastity at Asus (he is more active on the NBR forum and provides contact info there). He's their "erratic touchpad" specialist, and if you have him oversee your RMA, he'll ensure that the new one is installed properly. (Based on your description, I'm assuming you are well past your retailer's return window.)

oiprocs
04-10-2012, 04:15 AM
I have this same exact erratic behavior after maybe 20 mins of touchpad use. I sometimes rest my elbow or arms on the laptop area around the touchpad an the mouse moves. What should i do, should i try and dissemble my laptop and try and remove the foam and stickers or should I just wait and RMA? I'm not exactly sure what I would do once I open my laptop because I have looked through many forums to find a step-by-step guide on trying to fix it but I have had no luck. I have tried re-installing drivers and i figure that its a hardware problem since i have come to that general consensus through reading a lot of forums. It would help a lot of someone could explain to me what I could do to fix the touchpad once I disassemble my laptop to get to the keyboard. Do i need to remove, add, change anything?

BrodyBoy
04-10-2012, 05:12 AM
I have this same exact erratic behavior after maybe 20 mins of touchpad use. I sometimes rest my elbow or arms on the laptop area around the touchpad an the mouse moves. What should i do, should i try and dissemble my laptop and try and remove the foam and stickers or should I just wait and RMA?
If you have a bad touchpad, you can't fix it yourself. The touchpad needs to be replaced, and the new one needs to be installed with a secure, stable ground to chassis. I.e., you need to RMA it to Asus.

But the story doesn't end there. You need to make sure the service tech understands the issue and installs the new one correctly. If they simply use the same installation protocol the factory used, haphazardly slapping on a piece of foil tape to ground the new TP, there's always the chance it'll fail just like the first one did.

Chastity (over on the NBR forum) has been the go-to person for ensuring proper repair of these bad touchpads. I haven't seen him around here in ages, so I'd suggest you track him down over there, either in an active thread or by PM, and see if he'll help oversee your RMA to make sure it's done right.

HavokD
04-11-2012, 04:44 AM
Sorry for the hijack, and OP I really hope you get your trackpad repaired soon, but I have to correct the last post and say this: Chastity is a girl!

Sorry I can't be of much help, just wanted to comment the fact about Chastity since I respect her work a lot.

PILGRIM
04-11-2012, 05:02 AM
Sorry for the hijack, and OP I really hope you get your trackpad repaired soon, but I have to correct the last post and say this: Chastity is a girl!

Sorry I can't be of much help, just wanted to comment the fact about Chastity since I respect her work a lot.

:) Oh!.. The intrigue created by a name.. I go with Brody, Chastity is a he.

BrodyBoy
04-11-2012, 05:15 AM
Chastity is a girl!
Not that it matters, but he's a he. You can still respect him a lot. :)