Hi, I have G1 with touch screen not working. On the back of the LCD, the small clip down connector for touch screen ribbon cable doesn't seem to grip tight. Even when closed, cable can be pulled from connector quite easily. Any suggestions please?
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Hi
Forgive me if this has been posted before, but this is my 1st post here & need a little 1to1
My touch screen on my Qtek 9100 stopped working a few days ago, the phone is ok, i can make calls & use the manual keypad.
The phone was left uncharged for a few days & when i went to use it again the touch screen was not working.
There is a dent in the screen that i did not notice before, its only about 1cm, actually its more of a scratch than a dent.
The screen looks fine, no cracks or black spots visable.
No life from the screen, whatever part i touch.
Can someone advise me on what to do to get back up & running.... I have already done this.....
Hard & soft resets
Installed latest ROM.
Phone is currently stuck on the the "touch screen to setup your mobile device screen"
I have already ordered a new touch screen from the net,
should i just change the touch screen or are there other things to try first?
Any advice welcome like
(links to how to change the screen)
Cheers
any luck? im having the same proble but with my atom exec and everyone seems slightly blank on this
When the touchscreen went bad on mine, it turned out the cause was a tiny, almost invisible hairline crack in the touchscreen's ribbon cable which severed one of the wires. I had to use a magnifying lens to see it.
It was possible to test with a multimeter. On the back of the LCD is a piece of clear tape covering where the touchscreen ribbon is soldered to the LCD. You will need to lift the tape to expose 4 wires from the touchscreen. With pressure on the screen, there should be a resistance around 1.2kohms between pins 1&2 and the same between pins 3&4. On mine, pins 3&4 were open circuit.
To fix mine, I didn't change the screen. I removed the touchscreen ribbon from the main LCD (accidentally tearing the solder pads off the ribbon - I wasn't sure how it was attached). Then I used an X-acto knife and scraped off some plastic from each side of the break. Then I soldered a TINY piece of copper wire no thicker than a hair across the break (a single strand from a stranded wire). Since I accidentally tore the solder pads off the ribbon, I scraped off some plastic from the copper traces there and soldered some wire to them and soldered that to the LCD. That did the trick, it's all working now!
i have this same problem.. i was using the qtek with the cracked digitizer but when i did the hard reset it took me to this screen. is there anyway we can get off this screen? help plz!!
Hi,
The keyboard stopped working on my device so I opened it up to find the tiny flat keyboard cable not properley seated on the mainboard. I tried putting it back but 1)its SOOOO tine and fidley, and 2) the tiny plastic saddle / clip bit that holds the cable down broke in half.
I suspect it may have been cracked already somehow and that why it came loose.
Anyway, anyone know where I can get one of these little clips? Any tips for putting them back together?
Thanks!
Anthony
I have recently replaced the screen in the Jade after dropping and cracking the previous screen.
After replacing the screen it turns and and all looks fine but the digistiser does not work?
I had some problems with the white clip (see photo) and removing/replacing the ribbon. Is this the ribbon that controls the digitiser? if so i guess this may be my problem.
Any ideas would be appreciated
Did you flip the cable after you placed the digitizer in the casing?
like this:
click
otherwise, the cable is upside down in the connector.
i had the same issue.
see this post: http://forum.xda-developers.com/showpost.php?p=5720235&postcount=13
Did you do what marcell-o told you?
What was the problem?
i cracked my digitizer a while back, and ordered a replacement. i used double sided tape to install. the first digitizer worked great, except only the top 10% of the screen was not responsive (pretty much the width of the task bar) so i contacted the people i ordered the new screen from, and they just sent me a replacement. i installed the second digitizer, and this time none of the screen works.
i tried to make sure both times not to put the tape to wide so it doesn't overlap into the clear screen part, only the black, but could this be a tape issue? anyone else have trouble with installing where parts or entire screen didn't respond?
thanks for your help.
Are you sure you have the digitizer/lcd ribbon in all the way to the connector on the motherboard? When I first put everything back together when I changed a digitizer, touch didn't work at all for me initially. At first I thought I had a bad digitizer. Then I looked closely at the ribbon and connector, and there's some flaps that stick out to the side on the ribbon cable. Make sure you push the ribbon in until the flaps stop you from going any further.
So here is my story. I installed a new digitizer for my broken HD2 screen, and ended up creating a crease on the ribbon cable. I managed to also break off half of the lock-in bar (the black bar) on the socket, but it still locks half of the other pins down and in place.
Heres the problem.
I turn on the phone, and the screen lights up but doesn't show me my display. The backlight IS on, but isn't showing the bootup, or anything. I DID manage to get it to show the screen by messing with the cable, but only for a few seconds and then it wouldn't anymore. The phone functions fine, I had a friend send me a text and the phone vibrated, and when I pressed the lock button it locked and unlocked (for my Android ROM). I know it did this because the backlight would turn on and off on the LCD.
Would buying a new LCD fix the problem or does that little black bar on the socket matter? I figured all it did was lock the pins in place so it shouldn't be a big deal..
there is 3 ways out of that.
One put a tape over the back side of the flex. it might work sometimes, but not reliable
Two buy a new socket from ebay and resolder it.
Three hardcorely wire them. It is possible I fixed a broken volume flex before.
the lock does not just hold the cable in place it also pushes it down on the contact face.
You may be able to pack the ribbon on the back to help it fit tighter in the sock & increase pressure to the mating faces, hopefully the rest of cable is serviceable ! extra lock security can be added with tape & ribbon can be reinforced with tape too if helps.