Hello all, I just replaced a broken LCD and digitizer on my HD7 with a unit bought from eBay. It's from a supplier that I've used very frequently, so I trust the component. When I got the phone back together, it will sometimes boot, sometimes not. It will also sometimes display just fine, and other times it looks like it's garbled, or just not display at all. The screen will be blank and not react. I'm pretty versed at repairing phones, I've probably done 30 for myself and friends, so I'm pretty good at reassembly. Is anyone familiar with this issue and can maybe give me some ideas? Cause I'm flat out of them.
The other thing is that when I start moving the phone around after reassembly, this is when I start experiencing troubles. I tried putting electrical tape in places under the mobo to keep from grounding something out, but it doesn't seem to help. Any ideas would be great.
Did you put on gloves when you were doing the replacement. Cause like you I have done alot of screen replacements on a wide range of phones and I would have to say that there are devices out there were if something got grounded out while you are doing the replacement it tends to start doing all kinds of goofy things once the phone is back together. I have found that by wearing "gloves that do not conduct electricity" the chances of something like that happening is gone. Ive only had two devices do weird and strange things like some of what you have said. These were some of my first repairs and after changing to putting gloves on I haven't had a problem since.
Hope that helps and also I am about to replace the screen on a HD7 that I just bought just wanting for the screen so, I will let you know what happens.
Thanks, probably good advice. I've been very lax about using grounding protection of any kind. I've seen those guys who use the "finger condoms" where the rest of their hand is open. Couldn't hurt to use a grounding strap too, pretty cheap and easy precaution. The other thing I noticed about the phone was the SD that came with it isn't recognized by any OS, so wondering if there wasn't something else wrong with the phone.
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Hi
I've been having trouble with the touchscreen on my MDA Vario III, I'd be grateful from some advice from some of you hardware gurus.
It seems to be detecting phantom touchscreen input, which can prevent it from properly detecting real input. This was evident in the Notes application, if I were to tap around the screen in draw mode it would sometimes draw dots, but often draw a straight or curved line between the last point and the most recent one. I thought something might be pressing on the borders of the screen so I did the thin card round underneath the bezel thing, which if anything made it worse, though that may just be me imagining it.
I sent it off to a local repair firm for a touchscreen replacement, got it back this morning and it seemed to be ok, but not perfect. During the morning, having rerun kaisertweak and installed a couple of cabs, it deteriorated again.
Right now it's cycling round the Alignment Screen, the cross is moving around on its own periodically. If I try tapping the cross it mostly doesn't detect the tap.
So right now, I've got a month old Kaiser, warranty void and insurance not applicable, that I simply can't use!
My question really is, what could the problem be if it isn't the touchscreen/digitizer (they are one unit on the Kaiser aren't they?) and it doesn't appear to be a physical problem with the housing of the screen? Does it imply a mainboard failure?
Does any user configuration at all survive a hard reset? Such as increasing the touchflo sensitivity with Kaiser Tweak?
Thanks
hipster
I did/do have the exact same issue, however on my unit it only happens when using some third party stylii (spelling?)....one old Ipaq 3970 metal stylus, and 2 multifunction pens. Using the onboard stylus (or any other light stylus, like the one from the P3600) I encounter no problems (knock on wood), no matter how hard I poke on the screen....
Unit is over 3 months old - have gotten used to it, just don´t use any heavy/metal stylus.
Your problem, however, seems to be a bit more pronounced.....
Thanks for the reply, michi, though your problem does sound a bit different, if just a change of stylus improves it.
I've tried the stylus from my old Wizard and the arse end of a pen, without success, sadly.
Oddly, I'm starting to think it might be slightly heat related, if I leave the phone off for a while it seems ok, and stops responding to taps more after it's been on for a while. Very strange.
hipster
I knocked up an impression of what I get when tapping in a pattern in the Notes application, image attached.
Reading other posts about perceived performance problems with the Kaiser, I wonder if there are other cases where it seems like it's locked up, but in fact it's just taking an age to figure out what you've just asked it to do, essentially just a problem with the touchscreen, not the whole device. That's definitely one of the symptoms I get....
It's back with the menders now, hopefully, they'll manage to sort it out this time...
Cheers
hipster
Not sure if it could be similar, but I had a Tablet PC which was prone to interference from the power supply. Perhaps this is the case. May the sheilding is not up to snuff? I am by no means an expert, but this might give you another path to explore for problem resolution. Hope it helps.
I have had about 7 different AT&T Tilts in my life and if my memory serves me right, I only remember 2 of them not having the issue I am about to entail.
When I slide my keyboard out, it seems that the ribbon cable or something under the metal hinge pushes against the back of the screen and you can actually see the screen colors fray and fade as if it would do it you were to push down too hard on it with your finger.
I am just wondering if anyone else has notice this. Wonder if it is a common occurrence. I would like to know what causes this.
No such thing on the 2 I've had. Never read of it on here either.
7 Tilt's? That was a typo, right?
No issues for me at all. No resistance or screen changes when activating the keyboard.
hmmm, odd. yeah 7 man haha
i have the worst of luck with phones. the one i thought was "THE ONE" i would keep till it was time to get a new phone was hit out of my hand and the hinge came loose so I had to replace that. That one did not have the problem i stated earlier. my replacement had that screen/hinge issue so i told em to send me another one by bullshitting that it will crack my screen...the one they sent me to replace that had the 7201 chip in it and 0 hours of talk time so it was brand freaking new...but it also had the screen issue...weird, huh? i wonder if it is anything to worry about?
The momentary color shifting occurs when you are applying too much pressure to the wrong area when sliding the phone open. I don't see this is normal use since I baby my Tilt, but I am able to reproduce it when I purposely try to.
NotATreoFan said:
The momentary color shifting occurs when you are applying too much pressure to the wrong area when sliding the phone open. I don't see this is normal use since I baby my Tilt, but I am able to reproduce it when I purposely try to.
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yeah, i am aware. it happens regardless what i do. trying to figure out what is causing it so i can find a fix
Speaking from my job experience of ripping apart laptop LCD's, it's probably the ribbon cable; as mentioned previously...
Here's my story:
I recently bought this phone for only $125 - not bad deal if you ask me. I knew from the beginning that the screen was a little mess up, even the guy I bought it from knew that. You would need a flash light in order to see what was on the screen. From any other point of view, it's just totally dark/black. So the guy was gracious enough to include a new lcd screen which he ordered to replace the old one. So I decided to undertake the task of putting it in myself. Once that was all said and done, I powered the tilt up and it was doing the exact same thing before I put the new lcd screen in, which was not lighting up the screen and it was still very dark to see anything.
With a flashlight, you can see that it's still working and the touchscreen works fine too. I think another person posted a thread with the same problem, but no one really replied back to him. Has anyone come across this problem before? Some have said that it's the flex cable that connects to the front d-pad and lcd screen itself is the cause for the back light issue. Any suggestions out there?
If I were you I'd try to figure out the pinouts for the LCD panel. Try to see if the Kaiser is outputting the necessary voltage for the backlight. Also try the opposite and apply voltage to the LCD to test the backlight.
Unless it is 2 back LCDs, I'm assuming there is a fault somewhere internal and not turning on the backlight.
I've never taken my tilt apart, but this is where I would start.
I wouldn't know where to begin to troubleshoot a device like this. Lol! It's fairly easy to take apart - there's actually a video on youtube that takes you step-by-step. I guess this isn't as common as some problems are, but I don't want to spend money having someone else fix something that could be so minute. And prices for some of the replacement parts are almost as expensive as what I bought the phone for.
When I took my tilt apart, physically, everything looked good from what my eyes can see. A little cleaning here and there, nothing major. The guy who had it before me flashed the rom to try and make it look like it had touchflo on it so I reflashed it back to the original rom software (or at least, whatever was on the HTC website). I tried doing hard resets, soft resets, rom flashing and everything, still no luck.
So basically I've had my Droid 1 since March of 2010, I LOVE my phone. Today I was out in the sun, and it just started freaking out, I put it on a table from my cool pocket for literally 4 minutes. Now two things are happening:
the soft key search button has stopped working(keyboard one still works), and the place where the back button is on my soft keyboard is borked.
Is there anything I can try/do to possibly attempt to fix the problem? I've never run into an issue like this before. :/
okay... so I gave it to my brother to look at and suddenly it's working again...
Is there anything that could cause this?
We don't really know what causes the touchscreen issue but we suspect that the moisture is the main problem. Also, a defective or improper charging or a bad flex cable can lead to something like that. I am facing exactly the same problem (paradoxally, after flashing a new ROM - coincidence maybe) but here it didn't dissappear. I will replace the digitizer. I think it's the only way to get rid of it. If it shows up again, I'm sorry!
When do you plan to change out your digitizer? If anything I'd love to see your results before I go for it.
Oh the joys of being a broke college student.
The same problem happened to my D1!! If it re-occurs then it means that your digitizer has broken. The only solution is to replace it or buy a new phone (If you do a search on "Droid" and "digitizer" you will find many people who have had this same problem)
I researched repair stores and finally settled on a place called Mission Repair in KS (missionrepair.com). Sent my precious Droid to them on a Tuesday and got it back as good as new on Friday for a cost (including Fedex) of around $90 - certainly a lot cheaper than a new phone.
Has been working fine again since.
I heard it is a common issue on the phone, you can use an application like multitouch visualizer (on the market) to check the functional parts of the screen.
The problem I have is with the keyboard, I was using the right key to pass the pages on kindle for android and now I have to press it harder, it also happened with one of the space buttons, thanks god those are 3...
Ends up I'm not entirely retarded, and got the extended warranty for 1.99 extra month. I traded it in, but the replacement has same issues. Might be time to upgrade my phone...
Try replacing Flex cable instead of digitizer.
If it's not damaged.. hold off on the digitalizer and cable replacement.. grab ya some descant packets (do not eat bags that come with new items that can't stand any moisture) ziplock it up with them.. with battery out of it.. leave it over night.. bam..
BRITT#OGDROID
Oh.. and the OG doesn't like sweaty pockets or extreme humidity.. it's definitely your problem if not damaged.. bet you're in the south..
BRITT#OGDROID
As we all know, the phone is pretty darn well put together and surprisingly durable. But, unfortunately, it is not invincible. About a month and a half ago I cracked my screen. The phone had a case, but it wasn't anything hefty (the HTC Double Dip case). The phone was still completely usable, but I like the phone and wanted to keep it nice so I decided to replace the screen. I ordered the screen + framework assembly and it was about $55. In the past when I have replaced screens on a few iPhones and an ASUS tablet the parts were quite a bit cheaper, but whatever. My phone is the black model, but I decided to try something different and ordered the new part with red speaker grills. Most guides and such said that the M7 is a pretty hard phone to repair, but I have worked on a couple other phones before, so I gave it a go. After many, many hours of carefully prying apart the phone and transplanting the logic boards to the new screen framework I put it all back together and powered it up. To my surprise the phone powered up and the screen worked fine. (And let me tell you the red and black looks damn good). The first thing I noticed was that vibration didn't work. A bit annoying, but the phone looked good enough that I could get past that. Next I tested the speakers and noticed that at full volume the speakers sound a little bit messed up. Again, a little annoying, but I'm not a professional so I wasn't overly disappointed. Then came the real problem...
THE REAL PROBLEM:
When I put the SIM card in the phone didn't detect it. After a reboot it still didn't detect it. After a factory restore it still didn't detect it. Perhaps the ribbon cable connecting the SIM reader to the board was not all the way secured? After how hard it was to take the phone apart the first time I was not a fan of the idea of doing it again. But alas, the next day I opened the phone back up super carefully so not to damage the new parts. It was thankfully a little bit easier the second time. I made sure the SIM reader was all the way connected, but the phone still wouldn't read the SIM. I pulled the old SIM reader out from the old screen framework assembly and plugged it into the board, but the SIM was still not detected, indicating that the new screen did not come with a bad SIM reader. Has this problem happened to anyone else? What steps should I take? I now have really nice looking M7 that is essentially useless.
So does anyone have input on this?
Pr.TOSHIBA said:
So does anyone have input on this?
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Same thing happened to me. Also swapped out the old reader without any luck.... Any update on this?
Does it detect it at all? Like ask for the pin code if you use that?
Do you have to disconnect the battery when replacing the screen on this phone? I know on some phones I repaired I had to manually set the current time and date (resets to year 1970 or something like that if you disconnect the battery) to get a signal.
Otherwise I have no idea