[Q] possible problems with ribbon cable. - G2 and Desire Z Q&A, Help & Troubleshooting

I've been having some problems with my phone and I'm starting to thing it's the ribbon cable.
The first issue is that the left edge of my touch screen does not respond.
I didn't even know anything was wrong with it because of how slim the non-responding section is untill I tried to play backstab and couldn't push the continue button at the bottom of the screen. After a little more inspection i've found it impossible to drag up the notification bar when in landscape.
I wasn't fully sold until I opened up the sketchbook app and saw that I couldn't draw on the edge of the screen.
The second issue is that the trackpad button seems less responsive when pushed, but this may just be my imagination.
Any possible solutions? I purchased the phone second hand, and so I don't have a warranty. Would HTC fix it? (Even if they do charge a fee)
Sent from my HTC Vision using XDA App

Hey - did you ever get this sorted out? I'm having a similar issue and was wondering if you fixed it and, if so, how.

Buy a new digitizer/or a broken phone for parts. Should come with a new ribbon cable. What I did for my g1 anyways. Check it out. Do your research for teardown videos and be super careful sliding the new ribbon cable into its home. They rip in half ez.
Sent from my HTC Vision using XDA Premium App

Related

LCD color problem: Weird Teal/Blue-ish

Hey Everyone,
My LCD screen seems to not be displaying colors as well as it should, almost as if it isn't displaying all the colors that it is in fact capable of...
I had some prior problems with my phone, including a non-functional power button, a digitizer with some unresponsive blind spots along the left and right side of the screen, and a very faint/low volume through the in-call speaker.
I had been planning to go inside my phone using the teardown/repair guide, and actually ended up stripping my phone down to the LCD panel.
The good news is I have fixed all the problems that I had set out to fix while doing the teardown.
HOWEVER, my screen is now a weird teal/blue color. For example, when I equip the standard HTC skin (the one with the nice colorful bubble background) Instead of the notification bar/button being a solid steel gray, they seem to have striping pattern with some dull colors of gray but with this teal coloration.
I was wondering if it is more likely something to do with the pcb/lcd getting slightly damaged when I did the teardown, or is it possible it is something to do with a setting on my phone? (the boot screen did load up once, when I was doing the teardown and checking if my phone still worked, I chose reboot as the option)
HELP!
Well more then likely it is the conectors I've seen it to many times when people dicide to take apart phones id say take it all apart and make sure your cabbles are plugged in nice and and firm report back and tell me. Also make sure you havnt nicked anythng on the pcb boards (traces or anything) no nicked cords ect
Sent from my HTC Vision using XDA App
Same thing happening with mine, it's a week old and I've never taken it apart.
Only thing i can think of that happened that makes sense is a damaged pcb flex cable, thats it.but the weird thing is i fixed everything else. Its annoying cause videos look wack and taking photos is also messed. Ill probably go back into my phone and see what i can do, ive opened it like 8 times so wont be too hard.
)
Sent from my HTC Vision using XDA App
me too
Just wonderening if anyone found a solution to this problem as I am experiencing the same thing. I have never taken my phone apart. I have my own post called display color problems. Please help! This is absolutely obnoxious!
I sent mine back to Bell for repair. Took 2 weeks, don't know what they did but it works great now.
Was that an expensive repair? Wish I knew what the problem was so I could try to fix it myself.
Sent from my HTC Vision using XDA App
bglidd414 said:
Was that an expensive repair? Wish I knew what the problem was so I could try to fix it myself.
Click to expand...
Click to collapse
Actually it was covered under warranty so cost me nothing.
Well thanks anyway.
Sent from my HTC Vision using XDA App
Is your phone not under warranty? If it's because you rooted it, you can relock the phone with gfree and restore the BellMobility RUU...
Yeah I guess I could but I really can't go two weeks with no phone. That's the main problem.
Sent from my HTC Vision using XDA App
Figured I'd give this thread a bump. Really just hoping that someone out there has some experience with this problem. I've searched the net high and low to no avail. I don't want to waste money on unnecessary parts if I just need one. Presently, I plan on replacing my LCD. If anyone has any other suggestions, I'd love to hear them...
Sent from my HTC Vision using XDA App
This happened to me before i first opened up my phone. I wouldn't replace the LCD because i cracked mine, and had to replace it and it still does it. Just try and get a replacement phone from your carrier or the store from which you bought it while they fix it. Easiest option.

[Q] bizarre screen glitch

When closed my screen works just fine, and when I open for the keyboard it STILL works just fine, except that the whole screen shifts upward, so that part of the taskbar is actually off of the screen. If I open it slowly it seems like about at 10% open the screen flips horizontal, as it should, but then at about 80% of the way open the whole screen shifts upward until part of it is offscreen. Its not nonfunctional at all, but it is a nuisance, especially when playing any games I have the hardkeys setup as a controller. I've tried a full wipe and rom re-install and that didn't fix it. Also it seems like I've had to do a factory wipe more than once recently because the Home and Search touch areas have stopped working. Is there a weird software glitch going on or is my touchscreen on the way out?
I'm either going to just replace the screen for 35 bucks because its already kinda screwy, but if that won't also solve the weird screen shift issue ill just buy a new phone, any ideas?
Sent from my T-Mobile G2 using XDA App
Ok - so I think its hardware because the screen shifts even when the phones still booting. Would a new lcd fix this maybe?
Sent from my T-Mobile G2 using XDA App
I had the exact same problem. Your issue is in your ribbon cable, I was able to get my phone replaced but if that isn't an option for you, you can buy a ribbon cable and follow a very easy tutorial to install it
Sent from my Bulletproof G2
awesome, I've taken apart the phone a few times before, so now that I know the issue I can repair it finally! thank you so much for replying!! Which Ribbon cable are we talking about?
It is the ribbon cable that connects the screen to the keyboard through the z-hinge. I've never replaced it myself, but if your phone is completely normal closed and then distorts as it opens, then it definetely sounds like the ribbon cable has bad contact as it's stretched. It's really one of the only things it can be, if it were your lcd then the distortion would persist even in portait I would think
Sent from my Bulletproof G2
I must agree with the above poster, seems like its the ribbon too!

Home buttons, Search button Etc.. Doesn't work! :(

I've tried many solutions, I completely wiped and reflashed different roms. I've also repartitioned my SD (doubt that would do much) .
and still my button's wont work.
Has there been reports of physically damaged bottom buttons? I see no damage whatsoever also lights up perfectly.
Just an idea!
Please help me, its the only phone I currently have in my apartment. Any help or suggestions would be amazing thank you !
Only thing I can think of if there is no damage to the digitizer part would be damage to the ribbon cable that connects the digitizer to the rest of the phone.
kbeezie said:
Only thing I can think of if there is no damage to the digitizer part would be damage to the ribbon cable that connects the digitizer to the rest of the phone.
Click to expand...
Click to collapse
That's what I was thinking... is it difficult to open the phone up ? or is very sophisticated with the amount of screws?
Dude I had/have the same issue. I opened up my phone and put it back together. It started working better now. But whenever it stops working momentarily I just lock and unlock the screen.
there is a seperate flex cable for the buttons, it could be this or it could be the digitizer, either way relativley cheap and easy to replace. you can't always see the problem so just opening it up and looking may not tell you the problem.
but like strawmetal said, if there is some corrision on the contact points or some other intermediate problem, just opening the phone, disconecting it, cleaning things up, and putting it back together may fix your issues
Sent from my HTC Vision using xda premium
strawmetal said:
Dude I had/have the same issue. I opened up my phone and put it back together. It started working better now. But whenever it stops working momentarily I just lock and unlock the screen.
Click to expand...
Click to collapse
Do you still have the issue after reverting to stock?. Locking/unlocking the. Phone worksfor me as well, just sometiimes it is very annoying
Sent from my HTC Desire Z using Tapatalk 2
Came down to once yesterday. Earlier I even had a thin horizontal strip on the screen where touch wouldn't work. I had a tough time accepting/canceling dialog boxes. This is no longer an issue. Hope the bottom capacitatives don't show any more problems today. Then I'll be back onto the rooted side of android.
Sent from my HTC Vision using xda premium
EDIT: I got a lot of ghost activity on myscreen today. Fixed by lock and unlock but goes back to ghosting in a minute.
Today I didn't have any issues, phone was working normally, no unresponsive screen at all, capacitive buttons also worked well. It is puzzling...
Sent from my HTC Desire Z using Tapatalk 2
strawmetal said:
Came down to once yesterday. Earlier I even had a thin horizontal strip on the screen where touch wouldn't work. I had a tough time accepting/canceling dialog boxes. This is no longer an issue. Hope the bottom capacitatives don't show any more problems today. Then I'll be back onto the rooted side of android.
Sent from my HTC Vision using xda premium
EDIT: I got a lot of ghost activity on myscreen today. Fixed by lock and unlock but goes back to ghosting in a minute.
Click to expand...
Click to collapse
What do you mean by ghost activity?
Sent from my HTC Desire Z using Tapatalk 2
Ghost activity = screen being pressed without any interaction.
Sent from my HTC Vision using xda premium

[Q] touchscreen problem

hey
my touchscreen is gone crazy..
i am on SPEEDroid rom ..
n the lower section of touchscreen stimulates TWO touches by it self..
n then i went to settings and developers options then i ticked the SHOW VISUAL TOUCH FEEDBACKS and POINTER LOCATION.. n on the bottom of my screnn i can see two DOTS (touches which inturn is genereating the pointer location and the visual touch feed back)
any sugesstions??
is it hardware problem or software problem
??
Had a similar problem with my old HTC Hero back in the day, the difference though was the the bottom of the digitizer (the part that registers the touch) didn't work at all, it happened slowly but in the end it was like that, it began by simulating touches and at last stopped working all together.
I fixed it by replacing the digitizer that I bought off ebay for a few dollars, I have no idea if that is possible on your device, but it sure sounds like it is a hardware problem.
Best of luck
Sent from my GT-I9300 using xda app-developers app
There is wfs digitizer on eBay for 25 €
Sent from my HTC Wildfire S A510e using xda app-developers app
Questions in the q&a section please
Sent from my bowl of jelly!
Im having a similar problem, whenever I put pressure on the bottom right side of the phone (opposite of charger slot) it make my screen do the same thing, except it always happens at the very bottom right of the screen and it messes everything up, and it also messes up the soft keys, like I try an load an app an it starts spamming the back/search button and trolls me everytime its EXTREMELY annoying to do anything, thank god mx player has a screen lock otherwise streaming videos would be near impossible, I tried putting tape in the same spot it happens under the hard case and it's actually pretty effective it only ever happens now unless I really grip the thing.
I have similar problem....sometimes phone generates random touches even if I am not holding it...but fortunately only sometimes

Touch screen problem

Just recently acquired a g2.
Im having a problem with the screen where after revealing keyboard and then closing the screen jumps back after scrolling.
I don't know if it is something with using custom ROMs on the phone or could be the ribbon cable going bad.
Seems to happen worse and better depending on the ROM.
CM7 was almost impossible to use the screen without everything being long press with only a tap
Sent from my HTC myTouch 4g using xda app-developers app
Found the problem in case anyone finds something similar:
The ribbon cable had a spot worn out from opening and closing keyboard over the years. So I guess it was grounding out on the base of the phone causing the screen to act up when touching. In case u don't know that cable provides input and feedback to motherboard.
Solution:
Just took apart phone and removed motherboard to expose problem area. Cut a piece of electrical of standard width with about 4mm tall and covered area. Works perfect now.
Sent from my HTC myTouch 4g using xda app-developers app

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