Qtek 9090 LCD problem - MDA III, XDA III, PDA2k, 9090 General

Hello! I need an answer to a question: what is the problem to my Qtek 9090 LCD? I cracked only the touchscreen glass (not the entire LCD screen). I had another Qtek 9090 that was not working, but that glass was OK. I changed the glass (this one had a wider cable and I soldered it) and it is working just fine. But the display isn't showing all its colours, it show only a few (I think 16 colours ). What can I do to solve this problem? Can it be a problem to the LCD's ribbon cables? Please help me! I need a solution as soon as possible. It's enough if you tell me where is the problem and I can do the fixing. Thank you very much!

With the cracked touch screen, lcd show all colours? maybe when you soldered the new glass you soldered another thing also.. i don't know.
I changed the glass (this one had a wider cable and I soldered it) and it is working just fine.
You can tell what you do to change the touch screen and how you solder it? All touch screen need to be soldered?
thanks and good luck with your problem.

any help? thanks

AIN1
I'm electronic technician, let me explain you, the flex wire need an especial low termic solder past cause it need 0 resistance to pass the little signal through the flexible line, when you damage the flex wire the resistance was incresed and the signal it afected, oviusly the image gonna afected.

Related

Change LCD Cable

Hi there!
While replacing the speakre of my BA the lcd cable broke. But I already changed the lcd some time ago and now i have one broken lcd with a good cable and one good lcd with a broken cable.
Does anyone know how i change the cable?
Sorry friend, I had made the the same mistake; there's no way to replace it.
You have to buy a new BA lcd screen.
Well....
Some of those ribbon cables are attached to the glass via what amounts to glue. Electrical contact is done just by touch (no soldering).
At this point, I'd take apart one of the LCD's to see. It's not like you are going to make things worse if you break the glass on the dodgy LCD, it's already dead, correct?
Just try to post the results so the rest of us know as well!
yeah please post your results...
better if you have pics for it.
... im interested in "frankensteining" our BA's

Broken screen on my artemis

Hi you guys, does anyone know if you disamble the artemis easy and replace the touch screen? ( i was mad and smashed it, i kind of regret it, i know i shoud get anger management !). The phone is working fine, since i can connect it to my pc, the only problem the screen is black!
any guys any ideas or experience?
thank you.
hi, depending on which part you have broken, will depend on how much it will cost. Its fairly easy to change tho. If you have a look in the Wiki there is a guide to repairing the Artemis.
There are two parts to the screen the 'touch' bit on top (digitiser) and the actual LCD screen. If it is just the touch bit that has broken, then you can get a replacement one for around £7 on eBay. If the LCD has broken (which i am guessing it has caus u said it is just a black screen) then you can get a digitiser and a LCD for around £30. It is easier to replace both, as it is just a unit which is stuck in with double sided tape. WARNING: the ribbon cable which plugs into the main board from the screen is VERY fragile!
Hope this helps
broken screen
there are two different screen modules available for the Artemis. They are NOT interchangeable. In one case touch-screen module and LCD screen are seperate and in the other case they are both integrated into one module.
regards,
Bjorden
your gonna have to open it like i did, and find out which screen!.. also the touch screen is replaceable but its a ***** to do.. just get the whole screen on ebay 40 usd lcd and touchscreen very simple plug and play

blueangel glassdisplay cracked!

i've got this big ass crack on my display last night. the touchfunction dosn't work so I can't press my PINcode to access the telephone. how, where and how much can i replace the display?
gnops said:
i've got this big ass crack on my display last night. the touchfunction dosn't work so I can't press my PINcode to access the telephone. how, where and how much can i replace the display?
Click to expand...
Click to collapse
The best price I've seen for the touchscreen is on ebay. But, there are a few catches...
First issue: There are two different LCD/touchscreen assemblies that were used on the angel. One is made by Sony, the other by Toppoly. The touchscreen or LCD from one can not be used on the other due to programming and physical layout.
Second issue (and this is probably the biggest): The way they touch screen and the LCD are connected is a major pain in the arse to fix. It's a plastic ribbon cable that has been soldered to a point on another ribbon cable. Unless you are very good at soldering, it's not something I'd attempt due to the largish chance of melting the cables and making things worse, not to mention the potential to hurt the LCD itself.
If you look in the wiki under the hacks and tweaks, the Technical Stuff (including disassembly) link has two pages to look at:
Blue Angel/PPC6600 Disassembling Procedure with Pictures
Blue Angel Spare Screen
While they are not the best pictures, the last image under the disassembling section shows the ribbon cables I'm referring to, and the touchscreen assembly picture for the spare screen page shows a sony touchscreen ribbon cable detached from the LCD cable, which will show the connection points I'm referring to.
I've got this exact issue as well on my O2 branded angel. Due to the cost of a new LCD/touchscreen assembly (almost the cost of a working angel), I'm considering trying to solder a new touchscreen. If I ruin it, well, I've got parts for the next one I get.
I replaced a touch sreen today, its not that bad if you have soldered before. Unfortunatly the screen i got of ebay is not perfect and will need replacing. I have contacted the seller to see if he will send me another one.
Its worth doing!
Gary
Dimlow_uk said:
I replaced a touch sreen today, its not that bad if you have soldered before. Unfortunatly the screen i got of ebay is not perfect and will need replacing. I have contacted the seller to see if he will send me another one.
Its worth doing!
Gary
Click to expand...
Click to collapse
I've soldered plenty of times (a bit out of practice tho), but never something like that.
Any tips and suggestions? My main worry is melting the ribbon cables.
Well, no real tips, just take you time and don't rush it. The plastic can stand quite a bit of heat, i never managed to melt it, The job looks harder that it realy is. you will need a steady hand! Also , taping the connector down before you solder helps.
Gary
Dimlow_uk said:
Well, no real tips, just take you time and don't rush it. The plastic can stand quite a bit of heat, i never managed to melt it, The job looks harder that it realy is. you will need a steady hand! Also , taping the connector down before you solder helps.
Click to expand...
Click to collapse
Ok, that's good to know. The plastic didn't look all that durable, but if it's stouter than it looks, I may check with the house controller (aka CFO aka my wife ) and see if we can spare the dosh to pick one up.
I have to be careful as she wants it once it's fixed!
how do i separate touch screen and lcd? i only need to solder the new touch screen, right?
any help? thanks
pVilaça said:
how do i separate touch screen and lcd? i only need to solder the new touch screen, right?
Click to expand...
Click to collapse
There is a disassembly guide in the wiki.
What kind of screwdrivers are needed to remove those tiny screws on the LCD/ digitizer casing. I have 2 SX66's with broken LCDs and one with a broken digitizer. Time for some repairs.
jdc said:
The best price I've seen for the touchscreen is on ebay. But, there are a few catches...
First issue: There are two different LCD/touchscreen assemblies that were used on the angel. One is made by Sony, the other by Toppoly. The touchscreen or LCD from one can not be used on the other due to programming and physical layout.
Second issue (and this is probably the biggest): The way they touch screen and the LCD are connected is a major pain in the arse to fix. It's a plastic ribbon cable that has been soldered to a point on another ribbon cable. Unless you are very good at soldering, it's not something I'd attempt due to the largish chance of melting the cables and making things worse, not to mention the potential to hurt the LCD itself.
If you look in the wiki under the hacks and tweaks, the Technical Stuff (including disassembly) link has two pages to look at:
Blue Angel/PPC6600 Disassembling Procedure with Pictures
Blue Angel Spare Screen
While they are not the best pictures, the last image under the disassembling section shows the ribbon cables I'm referring to, and the touchscreen assembly picture for the spare screen page shows a sony touchscreen ribbon cable detached from the LCD cable, which will show the connection points I'm referring to.
I've got this exact issue as well on my O2 branded angel. Due to the cost of a new LCD/touchscreen assembly (almost the cost of a working angel), I'm considering trying to solder a new touchscreen. If I ruin it, well, I've got parts for the next one I get.
Click to expand...
Click to collapse
Hey MATE!! damn why didnt i ask this before!!!
i have the o2 xda IIs.. same problem, display works fine.. but tapping doesnt! after it was dropped!
Now, i got a guy to get a spare MDA T-mobile (blueangel) which doesnt work, but its lcd/touchscreen works.. i connected that LCD to my O2, it didnt WORK! how can i differentiate b/w the two LCDS?
i mean, how can i know that the LCD is made by Toppoly or Sony?! that'd be a great HELP!
SyNcViEw said:
i mean, how can i know that the LCD is made by Toppoly or Sony?! that'd be a great HELP!
Click to expand...
Click to collapse
Part numbers on the back or the cable design.
http://wiki.xda-developers.com/index.php?pagename=BlueangelLCD
TD035STED1
this is the code written behind my LCD. I have the O2 XDA IIs.
Is there anything else I need to look at aswell? or should I just buy a LCD with that code?!
SyNcViEw said:
TD035STED1
this is the code written behind my LCD. I have the O2 XDA IIs.
Click to expand...
Click to collapse
Interesting. Looks like the LCD used varies depending on when the phone was made.
My O2 has the Sony LCD.
SyNcViEw said:
Is there anything else I need to look at aswell? or should I just buy a LCD with that code?!
Click to expand...
Click to collapse
Cables and the wiki. The link I posted shows the difference between the two.
And yes, you will have to get the same LCD assembly/glass cover as what you have now. The two are not interchangeable.
There is a tool set you can purchase at radioshack that has the proper tip. Its a cheaply made tool but does the job. It is one of the kits with many bits. It would be the star tip. You can also order the tool online. I've taken mine apart a few times. Its sort of a pain but gets easier the more times you do it (replaced my screen three times). I have however, never been able to get the touch to work again because I can't really see how I would be able to solder such a fine ribbon. Ive had my mogul for almost a year and if my memory serves me the metallic strips are only about an 1/8th of an inch thick or less. I got lazy and put a piece of tape across the ribbon and put a small amount of glue to hold it down. Still didnt work. Didn't really expect it to either, but it was worth a shot. I turned it into insurance said I lost it and ended up with a broken 6600 and when I called to complain they sent me a mogul. So it's been awhile but I loved the phone. Hope this helps out.
dont scare the people
it can be replaced in 15 minutes with proper tools (screwdrivers)
i ve found some russian manual with pictures how to disasemble the BA (just look for it on the net) and its very easy, no need for soldering
there are 2 versions of displays, one have silver ribbon and the other have golden
when you opet your BA you ll see the display and the ribbon, also there is serial number of the display so you can check it too... all BA displays on the ebay have info about the ribbon and the serial number
I bought it for about 30$ and works perfectly, as original one...
buy digitizer and screen in one piece
you have to be total noob to have problems with changing of the display, so go for it !
If you are planning to replace the digitiser YES you do need to some fine soldering, all you need is the correct soldering iron tip for fine soldering and it is possible, done it about 4 times so far and everytime I promise myself not to brake it again but hahaha,
You can buy the LCD + digitiser together if you are unable to do soldering,
I use a razor which i took out from my shaver and thats what I use to seperate digitiser from lcd.
There are very cheap digitiser panels on EBAY, However some of these are not so good and ( digitiser is a 2 layer glass assy.) sometimes little area of this 2 layers stick together making touch screen non responsive.
Alternative is look out for spares, repairs sales if the screen is good buy it replace it, if you are a novice when it comes to these things, just take your time and dont rush it, even if it helps make little notes when you are opning the device as it ll make it easy when it comes to puting it back together.
And if you can get your hands on one keep a spare screen
Im sooo sad
I just cracked my screen I really hope I get a replacement cus I got more attached to my BA ever since I found out I could upgrade it. I thought it was not a biggie crashing it because I have dropped so many times and nothing happened but today something happened...
screen is 30$ at ebay, and no need to be sad, in few days it can be fixed

HTC EVO digitizer glass cracked:(

I have hardware version 0003, the display works fine just the top glass got cracked, can someone point me in the right direction for a new digitizer assembly? I found one on amazon new for 24$ but have no idea if it will work for my phone.0002 vs 0003 I read have different ribbon cables.
Sent from my EVO.
When this happened to me, I couldn't tell that the LCD had also cracked. I bought the digitizer only, and when I took apart the phone, I realized that I didn't have the parts I needed to fix it.
I can tell you that the correct P/N for the Novatel screen is 2V6A, but I am not sure of the P/N for the Epson screen. Check which screen you have by adjusting the brightness.
If when you adjust the brightness it switches with a fade effect, then you have a Novatel screen and you need the 2V6S ribbon. However, if it switches quickly and suddenly from one brightness setting to the next without a fade effect, then you have an Epson panel and you need the other ribbon cable.
So, I know it's been posted a lot in other places but I couldn't find like, a definitive answer as to if there are different digitziers? Am I just confused?
I would like to try and just replace the digitizer and glass over top of the LCD, my LCD works fine, the cracks are really thin and only a few going across diagonally. It fell from maybe 2 feet off my lap onto a parking lot surface.
I understand there is two LCD pannel types like you said, but are there two digitizer types/sizes?! for that ribbon cable.
I'm completely comfortable with taking it apart, I'm just worried I'll get the wrong part and find out the screen is also cracked and have to end up not using it for days until new stuff ships.... bleh
I've found digitizer+glass on amazon for 24-30$.
How do I adhere it to the LCD though, says doesn't include anything to do that.
EDIT: Found this gem: http://www.durapowerglobal.com/HTC-EVO-4G-Digitizer-Adhesive-_p_1166.html
Adhesive wont be a problem I just need to know about the glass/digitizer
EDIT2:
OKAY, if you want to ignore all i've said so far here is my real question of what I need to know.
http://www.durapowerglobal.com/HTC-...iginal-With-Installation-Adhesive_p_1103.html
Is there only ONE digitizer/glass piece on any given HTC EVO 4G? Or is there two different types like the LCD?

Touch Screen Replacement Question

So I dropped my Evo and now i want to fix it and want to order the parts but i read something about a wide flex cable and narrow flex cable does that pertain to the LCD only or the glass itself?
i have the wide flex cable (2WCA)
So to make my question clearer To buy the screen (Glass) not the LCD does it matter which flex cable i have??
TIA

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