yashsingh1/xdaforums huggingface dataset:
[G Tablet General] DJTJ:
Just an hunch

[/URL]
[G Tablet General] DJTJ:
http://www.umpcportal.com/wp-content/uploads/2010/10/TegaV2-modules.jpg

http://www.umpcportal.com/2010/10/tega-v2-naked/
[G Tablet General] mystkrh:
We've already been over this in this post and here http://xdaforums.com/showthread.php?t=888495
[G Tablet General] foobaz123:
Ztab internals

For anyone interested, I took some pictures inside my Ztab and posted them here:

http://xdaforums.com/showthread.php?t=960376
[G Tablet General] foobaz123:
Update...

I was finally able to post links to pictures, so no more zip files. :D
[G Tablet General] reeder960:
any way we can get a vibrator in the talbet?
[G Tablet General] slsmag:
You paid $400 for that dog?!
[G Tablet General] melax:
Can the external glass be replaced? My screen is functioning fine.. Just the external glass got shaddered a tad. I assume there is the internal screen and also the external glass? Thanks
[G Tablet General] TheEnforcer1443:
I woke up yesterday morning to find my charging port was too, broken from the circuit board. After much vulgarity; I removed four screws, used son's plastic guitar pick to unsnap plastic case snaps, and soldered the five pins back to the board. I'm not sure how good the soldering job was but it charges the battery and I was much releaved!!
[G Tablet General] xkwwwx:
Why did this thread die?
[G Tablet General] tbuaron:
new Gtablet mod

Hi

I hope to get my new Gtablet tomorrow, i will install the latest rom and try to mod the hardware (with some software).

1. The pciE port should be with USB pins (pin36/38) may be usable for usb to 3g.

2. I will perches GPS module (after i will learn witch one) (module 20$-50$) and solder it and Surrounded to the board.

3. DDR from 512mb to 1024mb.

I will need some help with the software (on off the GPS/PCIE pinout)

I hope the tablet wont stuck in Customs.
[G Tablet General] fosser2:
I was just wondering if anyone here has sucessfully installed the GPS module yet. It would be great to have a tablet w/ gps.
[G Tablet General] ridegixxers:
hey i have the same model as you and my power connnector broke off inside too. but has anyone thought about warranty? doesnt warranty cover this? its a manufacture defect, no? also if it is warrantied by VS, i bought my tab on ebay from a US seller beginning of this month do you think its valid, p.s. i did register it with VS the day i got it.

thanks

RG
[G Tablet General] shah123:
Has anybody tried to hard reset the tablet to come out of "stuck in APX mode" issue? How did it go?

For those who don't know what this issue is, several users have experienced gtablet going into the mode where when you power it on it simply displays the colorful birds and then the screen goes black as if it shut down, but in reality it goes into APX mode where you can flash NVRAM. The only way to get it out is to wait for the battery to drain and then apply power and then it boots all the way. Unfortunately applying power charges the battery and then when you turn it off and then on, the tablet goes back to APX mode. To boot it again, you have to wait until the battery drains. :(
[G Tablet General] shah123:
How do you guys pull out the rubber coverings on the screws? Do they leave any marks? I am facing dilemma: Should I send it out to Viewsonic and get it replaced/repaired under warranty, or should I open it up and do a hard reset on my tablet? If I decide to hard reset myself and if opening it up leaves marks behind, then I may not have the option to send it to Viewsonic as that would void the warranty.
[G Tablet General] bandroidx:
Is there a picture showing the wifi antenna placement? I am having trouble getting quality wifi signal while on the crapper and I believe its partly how I am holding it, it seems the holding position makes or breaks the good signal.

:)
[G Tablet General] sureshot2k:
Anyone have any tips on how to best remove the broken bits of the old glass and install new glass.

Is it stuck on with any adhesive? If so I heard a hair dryer may work to loosen it, but what adhesive would I need to buy to stick on my replacement glass afterwords?

How best to pry open the metal rim to replace the glass without bending it and making a mess?
[G Tablet General] pyroboy1080:
Problem is, what is currently interfacing with the accelerometer/position sensor? Because you could wind up soldering a chip and come to find out the performance is not what you have come to expect with A-GPS features, I believe most gps chips handle the sensors directly, and that's how you're able to get a GPS fix quickly on most android phones. :(
[G Tablet General] NinetyWt:
rosco, did you happen to run across any place with a replacement battery over there?

If anyone wants a pic of the battery & label, I posted two pics here:

http://xdaforums.com/showpost.php?p=14277080&postcount=8
[G Tablet General] rosco_pc:
I never looked. Will do a search tonight and let you know
[G Tablet General] NinetyWt:
Thank you! I am dead in the water and don't know what else to try. :(
[G Tablet General] rosco_pc:
I checked on taobao.com (Chinese version of ebay) and could not find anything. Plenty of Malata batteries around, but not this specific one.

Some words if you want to do your own search

Battery: 电池

Malata: 万利达
[G Tablet General] NinetyWt:
Thanks for looking.
[G Tablet General] TJEvans:
I read this entire thread looking for any conversations about replacing the "camera" on these things. 1.3 megapixels is pathetic. Has anyone contemplated replacing with a higher resolution camera, or perhaps even just flipping the camera around to make it rear facing (I understand that a hole will need to be made for this)

It would be nice to be able to take decent quality photos/videos with this thing.
[G Tablet General] fosser2:
Funny you mention it, because I actually did look into it for a bit. I looked through a buncha sites, but couldn't find one that would match the current connection that the camera is plugged into. If you can find one I would love to try that mod. The tegra processor can support like 8mp or something like that.
[G Tablet General] :
Is there a pic of the wifi antenna connector anywhere that's not super fuzzy, and is it the RF or whatever connector style that's on the MiniPCIe cards?
[G Tablet General] tynan:
Any updates on trying to get more memory working on it?
[G Tablet General] fosser2:
Expanding the memory capacity is impossible for the end user. You need BGA soldering equipment to install the extra 512mb. The amount of hardware knowledge that this requires, will most likely prevent anyone from attempting this mod. Also even attempting his could really mess up your board.
[G Tablet General] JasonM79:
does not show up anymore, where else can I get this?
[G Tablet General] kank_fraud:
You can use a SMD rework station to desolder and solder SMD IC's including memory chips!

I have repaired motherboards and also combined two old DDR RAM modules cuz some of the chips on one of them was not working.

It shouldn't cost more than $70.

Its easy but while replacing the chips u hav to be careful to align the pins correctly and also use a timer and thermometer to monitor temperature.

and keep an eye on the timer. Chips can only handle high temperatures for a few seconds.
[G Tablet General] Davy49:
Hello All,

So far my biggest concern is how quickly the wifi signal strength seems to fall off, I use a linksys wrt54g broadband router to send out the signal to other computers in our home. They normally always show the signal strength all excellent, but as far as my gtab goes..like right now I have it in our spare bedroom about 50 feet away from the router and it shows as good, with only 2 out of the 3 bars on. I wish the breakdown images would have shown more about the wifi system. I wish there was some way to capture better signal for the gtab.

Thanks,

David :confused:
[G Tablet General] wcparry:
A line on a battery would be GREAT. Just to keep this thread alive, as useful as it is.
[G Tablet General] gierso:
has somebody bothered to do or found anything regarding on how to make the Tango S32s to register more than 2 touches?
[G Tablet General] fosser2:
There is no way to fix this via software. It was looked into and determined that it was a hardware limitation.
[G Tablet General] tvm777:
any news? does the increasing ram worked?
[G Tablet General] redhonker:
Sorry to post in an old thread. My gTablet does not respond to the hardware button (power, volume +/-). It powers on when reset button is pressed. Sometimes, it will come back to normal. Then a few hours later, it will shut down and stop responding to any button. My guess is some wire/connector is loose. I've touched every obviously visible wire and connector but did not notice anything loose. Could anyone suggest which ones to check?

Thanks
[G Tablet General] rr5678:
Oh man, I haven't seen this section in a long time.

But, are you sure it's hardware and not software? It sounds like its freezing with the screen off.
[G Tablet General] Davy49:
Wifi Antenna Location

Hello All,

Unless I somehow just missed it..does anyone know exactly where the 'wifi' antenna is located inside our gtablet ?

Thanks,

David :confused:
[G Tablet General] aabbondanza:
You missed it

If you look closely @ the first pic in the OP you will see the gold antenna connector & then follow it to the antenna.

See the attached pic for a up close.

Al
[G Tablet General] Davy49:
Dear aabbondanza,

Thanks SO much for your reply...I'm feeling my age anymore. By the way.. what a GREAT mage !

Thanks,

David :(
[G Tablet General] allenpan:
i am gonna kick this back alive as i am attempting add more ram to it!

anyone has broken or donor G-Tablet/Zpad let me know...

i also got one that has the different/swaped partition structure and seems to stuck in APX mode, i need some help to restore that so i can test it with new ram install!
[G Tablet General] pyroboy1080:
I have a broken Gtab, smashed the digitizer, everything on the SoC board is good.

Send me a shipping label and it's yours
[G Tablet General] allenpan:
pm'ed
[G Tablet General] rajeevvp:
Partition structure where? On the NAND flash or on the SD card? Partitions on both devices can be modified (added to/deleted/re-ordered) pretty easily. See this post.

See this post.
[G Tablet General] ronhoney:
Wow! Thanks much for your work.....now we just need to set up Lemcott in a shop to add the additional 512MB of RAM, GPS Module, & 3G Module. Start with a batch of $279 G Tabs from Sears Outlet and the effort could actually make a little money.
[G Tablet General] t3h_g3n3r4l:
There are a few places you could fit in a stripped down USB hub. I took my tablet back, so I don't have any way to measure clearances anymore.
[G Tablet General] ultimind:
LCD Panel replacement

I would be very curious to know what type of LCD panel is being used in this thing. My biggest gripe with this thing is the awful viewing angles especially in an office surrounded by folks who have iPads.

I know a 10.1" IPS panel doesn't exist (as far as my Googling can tell), but there are certainly netbooks whose panels are of much higher quality than what Viewsonic provided. Wait... aren't they a monitor company? :confused:

The most important thing is figuring out the connector that is used, and if a better panel can be found that matches that and fits in the case securely.
[G Tablet General] raydog153:
If you turn the tablet upside down, the viewing angles are better as if they mounted the panel upside down. Granted it isn't much better, but it helps a little.
[G Tablet General] ultimind:
I regularly use my GTab upside down. Since the UI flips 360, it's never a problem.

I found the specs on the panel used in our GTabs:

http://lcd.eechain.com/datasheet_detail.asp?bg_key=A&sk_nub=B101AW06%20V0

It quotes the viewing angles at 45x45x15x35 which is just about right as far as I'm able to measure at home.

Let's take a look at an Asus 1001P netbook, which is often rated as one of the better panels among 10" WSVGA netbooks:

We know the 1001P is rated very highly, especially in contrast ratio:

http://www.anandtech.com/show/2965/asus-eee-pc-1001p-our-favorite-netbook/3

We can derive the panel used in said laptop here:

http://forum.eeeuser.com/viewtopic.php?id=88221

If we continue our googling, we can find a manufacturer datasheet for the HSD100IFW1 display:

http://www.deaking.cn/uploadfile/HSD100IFW1-A00.pdf

Section 3.0 specs this display's viewing angle at: 70x70x50x60

So not only does this panel look great, it also is rated at almost 4 times the vertical viewing angle, and nearly double the horizontal as the B101AW06 panel found in our GTabs.

The problem:

The HSD100IFW1 spec'd above uses a 30 pin LVDS interface. Our B101AW06 panel uses a 40 pin LVDS interface. Now we must find out if Hannstar provides said panel in a 40 pin configuration.

I'm totally game for swapping my panel BTW. :D :D :D :D
[G Tablet General] markgolly:
Also, if you can find the interface spec for the gtab's stock display like in the HSD100IFW1 display datasheet (section 5, page 12, and following), the hardware gurus here might be able to hack a 30-to-40-pin LVDS converter....
[G Tablet General] ultimind:
Further Googling reveals that the HSD100IFW1-A02 appears to be a 40 pin interface.

I wish we knew if the connectors all lined up!!!!
[G Tablet General] NewbTrader:
That's what some thin wire and solder is for. Regarding fitting it in the case, there's always hot glue for that. :D Who's willing to try it out? :p
[G Tablet General] ultimind:
The cheapest price I can find for the panel is $69 + shipping. It says drop shipped from mfg, so that probably means 2+ weeks to get it from Asia. Eeekk!
[G Tablet General] markgolly:
Sorry, not my gtab before Christmas - got a looong car trip with anxious kids to keep under control.... :eek:
[G Tablet General] ultimind:
I'm tempted to get some warranty-voiding action going this weekend and tear into the thing. Atleast see what I'm up against... if there will be soldering involved or if I'm lucky and they use a normal connector.
[G Tablet General] markgolly:
Display LVDS interfaces are all pretty similar - just on different pins. That's why I was wanting the datasheet for the current gtab display. That way I can compare pins and electrical waveforms to see how compatible the two displays are. I just can't find a datasheet on the gtab's display.... :mad:
[G Tablet General] ultimind:
One potential problem is that the Hannstar panel used in the Asus is 1.9mm thicker than the AU Optronics panel.

Not sure that there's an extra 2mm inside there to cram a panel. :confused:
[G Tablet General] Lnin0:
For what its worth. Here is info on Pixel Qi 3Qi-01 10.1" / 40-pin LVDS

w w w . display-solution.com/pdf/tft-displays/Pixel%20Qi/pixel_qi_spec.pdf

Samsung LTN101NT02 (seems to be in or compatbile with a lot of the netbooks that the 3Qi-01 is fitting in).

w w w . laptopremont.com/manuals/LTN101NT02.pdf

LG LP101WSA (same as above)

w w w .laptopremont.com/manuals/LP101WSA-TLN1.pdf

I don't read Russian but on this laptopremont site they do list the B101AW06 (no PDF) and it looks like the Chimei 10.1"WSVGA N101L6-L0C/L0D is listed as an alternative replacement to it.

w w w .chimei-innolux.com/opencms/cmo/products/notebook/products_notebook_N101L6_L06.html?__locale=en

There are a couple other 10.1" AOU panels that do have white papers with pin assignements on that site if that helps as well.

w w w .laptopremont.com/manuals/B101AW03%20V.0.pdf
[G Tablet General] ultimind:
The question would be whether the Pixel Qi display could be switched in software on Android.

This would be the ultimate solution, but probably the most difficult to implement.
[G Tablet General] markgolly:
I'll look at these PDFs over the weekend and compare their electrical and interface specs.
[G Tablet General] markgolly:
Aaah, couldn't help myself, I looked (at least at the PixelQi datasheet)

The PixelQi display is electrically compatible (voltages and currents are in-tolerance and LVDS pins are identical). The problem is that the LVDS timings are slightly different - probably enough to make it "not work" out-of-the-box. However, the display timings might be settable in the kernel (or they might even use the EDID info, which would make it "just work"...).

Also, from what I can tell, there is no "display switch" to go from the grayscale to the color display and back again - its all dependent on backlight *and* ambient light intensity as to what you see.
[G Tablet General] ultimind:
Very interesting.... Can these panels be purchased yet?
[G Tablet General] HorsexD:
What about these? think this site has compatable Displays? http://www.laptopscreen.com/English/screen-part-number/B101AW06~V.1/
[G Tablet General] Fencesitter:
Hi, long time lurker, first time poster here.

I was actually able to plug the Pixel Qi display into the GTablet and it worked, at least with the backlight. The problems are: the the panel is wider and thicker than the stock AUO, so fitting it in the case is difficult; the connector is in a different place so really, fitting it in the case is difficult; also, I had some issues with the touchscreen working consistently- that may have been due to having everything hanging loose due to the aforementioned problems.

At least the nice thing is that the panel used the same wiring harness and plug.

Since the Pixel Qi screen is supposed to work out of the box in some laptops, I assume that you just need to tweak the backlight settings to get the transflective part working. I assume you can use the power control widget, or CM6 allows custom backlight levels depending on the ambient light level.

I've already moved back to the stock AUO screen, so I can't check this stuff.
[G Tablet General] ultimind:
The problem with these sites is that they cannot guarantee you exactly what panel you're going to get.
[G Tablet General] ultimind:
Where did you source your Pixel Qi screen from??? I'm very interested to try one out even if it means some additional modding to the case to make it fit.
[G Tablet General] ultimind:
Higher res screen

There's a couple of netbooks that have 1366x768 screens in them.

Any hardware guys have any insight on whether something like this would be compatible as a swap?
[G Tablet General] markgolly:
I'm not entirely surprised - the data transmission specs are a little different between the stock AUO screen and the Pixel Qi screen. For those of you who have messed around with X settings, its the hardware equivalent of the MODELINE settings. I'm just not sure where those display settings can be tweaked (or if they even can w/o the kernel source).
[G Tablet General] Adam B.:
I think you can buy them from here: http://www.makershed.com/ProductDetails.asp?ProductCode=MKPQ01
[G Tablet General] Fencesitter:
I got it from Maker Shed (search "Maker Pixel Qi" with your favorite search engine). It's expensive at $275, so probably not recommended given the form factor issues too. I got it for a different project which I still haven't gotten around to yet.

But the thing is that we can now assume that the AU Optronics connector pinout is pretty much the same as the Pixel Qi. The nice thing being that at least the Pixel Qi specification is readily available.

If you really want to try to fit the Pixel Qi, I suggest you take apart your GTablet first, cut down a thick (5mm) piece of something, say cardboard, mark the connector location and determine how you'd want to make it fit before buying the Pixel Qi. I believe that Pixel Qi specification has been posted in this thread somewhere.
[G Tablet General] ultimind:
With the imminent release of the Notion Ink Adam tablet, I may just wait and see what that thing looks like. Twice the ram, pixel qi display and 3g out of the box for only a Tad more than the Gtab. I still have a solid interest in swapping the AUO display for a hannstar one though. I'm worried the case wont have the additional 1.9mm clearance I need though.
[G Tablet General] h4x0rjdag:
so this expandable ram slot, anyone up their gtab to 1gb yet ?
[G Tablet General] ultimind:
It's not a "slot" per se. It's expandable via soldered-on RAM.
[G Tablet General] pershoot:
would love to see if we could swap out the LCD. it really is that bad, ha, and takes away from the power of the device.

if anyone is able to accomplish this please let us know!
[G Tablet General] cybik:
Does anyone know of -any- provider that could provide a "socket" for the contact points of what seems to be the miniPCIe "pinout"?
[G Tablet General] Lnin0:
Yeah, I looked through specs on a lot of the 10.1" panels. Most run around 5.5mm in thickness compared to the 3.6 of the AU panel. Even the Pixel Qi, which is one of the thinner, is around 4.9mm. One of the posters who tried this panel in the GTab said fit was the main issue.
[G Tablet General] Longsh0t:
With how easy it is to remove the back, I would love to see someone make one with a built in kickstand like on the Archos 101.
[G Tablet General] phfaty:
Can you please post photograph of this? Maybe several high resolution ones with dimensions. Here are a few mini-pci express sockets I found on mouser.com

http://www.mouser.com/Search/Refine.aspx?Keyword=mini+pci+socket
[G Tablet General] phfaty:
Pixel Qi screen looks great but at the price of almost $300 each makes it too expensive of a mod for everyone. I think we should explore adding the Mini PCI Express connector and enabling that in the roms. This would be a good and cheap mod to do compared to a $300 pixel qi screen mod.
[G Tablet General] amathophobia:
I am also most interested in expanding the memory of the tab. I'm just to broke to risk killing my tab. Hopefully someone else with more testicular fortitude tries it so I have a good idea of what is involved.
[G Tablet General] katmandu421:
Screen rotation?

Anybody attempted to rotate the screen? Would it be as easy as whipping up a longer ribbon cable or would you have to do something for the capacitive buttons also?

I love the way the screen looks and its viewing angles when I Orient my tab 180 degrees but would like to maintain the button layout.
[G Tablet General] KnightCrusader:
If you flip the screen, wouldn't you also have to flip the digitizer and the g-sensor?
[G Tablet General] moli13:
Did you take any photos of this install by any chance?
[G Tablet General] Fencesitter:
Sorry, it was only hooked up for a few minutes with everything hanging loosely.

Does anyone know about the AUO B101AW02 screen? (vs. the AW06 that's in the GTablet)
[G Tablet General] Lnin0:
Looks about the same specs : w w w .laptopremont.com/101-led-lcd-matrica-displey-laptop-wsvga-glanc-b101aw02-p-301.html
[G Tablet General] brian_h_kim:
any info on how easy it is to replace the battery?
[G Tablet General] Fencesitter:
I just plugged my Pixel Qi in again- just the screen, motherboard, battery and briefly the power button. Viewing angles aren't much/any better- the Nexus style startup screen looked poor at the usual angles, though I forget whether flipping the screen changed things when rotating about the long axis.

Again, this was without the touchscreen on, so I really couldn't do anything but view the startup splash screen and the "Welcome to Android" screen (Tnt 2.2.0).

A quick search on the web shows a couple of articles that also note similar viewing angle issues, though others note that they've improved viewing angles over earlier iterations. The problem is that this is an earlier version of the screen.

Also, this is with the backlight on- reflective performance may differ.

So, the Pixel Qi isn't necessarily the answer to our viewing angle woes.
[G Tablet General] Fencesitter:
The battery is pretty easy to remove once you've got the back cover off- there are maybe four pieces of tape holding it in (besides the back cover).

The challenge is getting a replacement battery.
[G Tablet General] switt:
If you want to have another go at it try hooking up a mouse to the usb port. I was able to use my Lenovo HTPC mini keyboard/trackball to control my tab very easily.
[G Tablet General] anlog:
The Notion Ink Adam model that comes with twice the ram, Pixel QI display, and 3G is NOT a "tad" more than the GTab. Try almost twice the price (GTab was on sale for $349).