Database Users

Replace lcd screen or motherboard?? Maybe? Maybe not??

Ok this one goes out to all you cool smart guys out there. I currently have two mt4g's. One is working perfectly fine with the "bad screen", as they call it, and the other is bricked, or no it has a failed pu is what someone told me, but it has the "good screen".
Anyway while just minding my own business on the internet one day I came across a video which shows you how to replace a lcd screen in a mytouch 4G! I was hooked. I could do this I said, it looked so easy! Sure you need some patience, which I got btw. So I was determined to do this, even ordered the tools from repairsuniverse. So about the fourth time watching the tutorial I began to wonder if it would be possible to just swap motherboards instead of disassembling all the way to the screen. Mostly because I still need a heat gun so i could remove the digitized then lcd screen.
So i guess my question is will swapping motherboards solve the pu problem in the mytouch with the good screen? And while I got you here has anyone ever replaced there lcd screen?? Is it worth it??
Sent from my HTC Glacier using XDA Premium App

Yes, if you put the good motherboard in the case with good LCD, you'll get one good phone.

Thanks for the response! This will make the job so much easier

repair options
sorry to piggyback you post but i had a similar question....
a friend of mine is giving me their broken mytouch 4g. it was working perfect but then she dropped it on her kitchen tile (bottom right corner hit i'm told) and now it will not turn on at all.....no cracks or anything, just a scratch in the corner. she says she tried a new battery and tried plugging into AC but no lights, nothing.
i've taken apart enough phones so once I get it i'm not afraid to do some swapping of parts.
my question is, those of you who have worked on this model, any indication where you think would be the problem? i'm hoping the lcd/digitizer is fine since its not cracked but we'll see....and i figured maybe i would just need to do a motherboard swap worst case? is there any other components you think could be shot after the drop? from what i've been able to find its just the 1 main mother board , correct? (meaning there is not 2 parts)
thought MAYBE i'll get lucky after opening it up, and verifying all the cables that possible some cables got jarred loose and thats why it wont respond but not holding my breathe on that.
thanks for the help!

digitizer replacement

hi guys,i would like some advice on replace my digitizer,as i never done one im am not sure about how to do it correctly,so,if anyone as idea on how to remove the digitizer,what tools we need,if there is any soldering work to do or anything else please reply,any information related to this will be helpfull!
Many thanks

take a look at this
http://forum.xda-developers.com/showthread.php?t=1291974
you will open it without problems JUST you need to be gentle and do everything slow..
Replacing the digitizer is quite easy there is only one connector you need to connect..

thanks fsnelis,that's a big help allready !

You know what is the type and cost of a new digitizer?

ziuzitsu said:
You know what is the type and cost of a new digitizer?
Click to expand...
Click to collapse
Just make a little research on ebay or google and you will get an idea of the prices.
Where you live for example can be a factor on the price...

Hi guys!
I just replaced my broken digitizer with one I bought on ebay, and the new one works fine.
However, the earpiece speaker does not work. Help!
Do any of you have any tips for me?
PS: I already threw away the old one when because the touchscreen seemed to work fine, so I can't just take the speaker from that.

I just bought a new digitizer off of taobao. It cost me 120 RMB ($19) and comes with a replacement front shell. When it arrives I'll install it. Good luck with your speaker, when I get mine in I'll look at the circuitry to see if I can find anything to help you.
EDIT: Replaced mine, it was pretty easy. On your speaker, did you reconnect the speaker wire correctly? Or did the wire get damaged? That's the only thing I could see that could go wrong with it.

andlea said:
Hi guys!
I just replaced my broken digitizer with one I bought on ebay, and the new one works fine.
However, the earpiece speaker does not work. Help!
Do any of you have any tips for me?
PS: I already threw away the old one when because the touchscreen seemed to work fine, so I can't just take the speaker from that.
Click to expand...
Click to collapse
I have the same problem. The speaker in the new digitizer is bigger than the old one.
An image showing the differences
Does anybody know where to get a fitting digitizer/speaker?
Seems like there are no right ones on ebay...
Update:
I've contacted the seller. I will send him the part number of my digitizer (printed on the cable) and he will try to get the right one for me.
The ebay seller is 'easyworldwidetrading'. I will update this post for the folks who need this kind of digitizer.
Update 2:
My digitizer is a "TM1564" model which will be send to me now.

krothold said:
I have the same problem. The speaker in the new digitizer is bigger than the old one.
An image showing the differences
Does anybody know where to get a fitting digitizer/speaker?
Seems like there are no right ones on ebay...
Update:
I've contacted the seller. I will send him the part number of my digitizer (printed on the cable) and he will try to get the right one for me.
The ebay seller is 'easyworldwidetrading'. I will update this post for the folks who need this kind of digitizer.
Update 2:
My digitizer is a "TM1564" model which will be send to me now.
Click to expand...
Click to collapse
hi, you got a link to buy?

Not really. Just had some email conversation with them/him.
The shop is called 'easyworldwidetrading' on ebay:
http://myworld.ebay.com.hk/easyworldwidetrading?ssPageName=ADME:L:OCE:1181
Haven't got the new digitizer yet. He wrote "It is OK, I will check about it and reship the TM1564 model touch screen to you, is it OK??". I am expecting to get it within the next two weeks. I will keep you updated if you want or you can write him on as I did. Maybe he will start selling the TM1564 on ebay too.

Old speaker with wrong digitizer
Hell,
i wonted to ask is it possible to use old small speaker in new digitizer replacing big speaker?
Is there any other differenc in digitizers other then speaker size?
If i take big speaker out and glue or attach small speaker in the place, can i work like that?
Any help would be appreciated, thanks.

I had a look at the two digitizers and yes, I think that it is possible. If I can help you with images or anything else just send a msg to me.

krothold said:
I had a look at the two digitizers and yes, I think that it is possible. If I can help you with images or anything else just send a msg to me.
Click to expand...
Click to collapse
Ok, thanks for info, i will try it and report what happens.

Hello, i have tried and it works, so you can use your old speaker instead big speaker in digitizer. I just replaced big speaker with my old small speaker and it worked. You have to center it in digitizer and put something on top of the speaker i used double layer tape otherwise speaker is too much in and it doesn't make connection.

On top? You mean towards the ear?

krothold said:
On top? You mean towards the ear?
Click to expand...
Click to collapse
Yes .

ademirado said:
Hell,
i wonted to ask is it possible to use old small speaker in new digitizer replacing big speaker?
Is there any other differenc in digitizers other then speaker size?
If i take big speaker out and glue or attach small speaker in the place, can i work like that?
Any help would be appreciated, thanks.
Click to expand...
Click to collapse
You know, you don't have to replace the speaker and case. You can remove the digitizer from the case and put it in your old case with the smaller speaker.

typci said:
You know, you don't have to replace the speaker and case. You can remove the digitizer from the case and put it in your old case with the smaller speaker.
Click to expand...
Click to collapse
OK, i didn't know that, thanks, i threw my old case away so for now it's good like this.

krothold said:
Not really. Just had some email conversation with them/him.
The shop is called 'easyworldwidetrading' on ebay:
http://myworld.ebay.com.hk/easyworldwidetrading?ssPageName=ADME:L:OCE:1181
Haven't got the new digitizer yet. He wrote "It is OK, I will check about it and reship the TM1564 model touch screen to you, is it OK??". I am expecting to get it within the next two weeks. I will keep you updated if you want or you can write him on as I did. Maybe he will start selling the TM1564 on ebay too.
Click to expand...
Click to collapse
He could not get it. But i've found another ebay seller which offers the TM1564 touch screen.
I've just ordered it. Will keep you updated if it works.
Search for "Digitizer Touch Screen For HUAWEI Ideos X5 U8800 Front Frame Cover small speaker" on eBay.

I changed the digitizer yesterday, it was very hard!!

HTC HD2 High-definition Motherboard Pictures

Hello guys. I need high definition photos of HTC HD2 Motherboard. I need to check one SMD part on motherboard because I think I accidentally broke one part on it. It seems like there is one missing part but I am not sure. So if anybody can upload really high def photo of motherboard it will be great. I searched google and forum here but its not enough to zoom in on that place.

This is what I had laying around
Sent from my HTC HD2 using XDA

wouternet said:
This is what I had laying around
Sent from my HTC HD2 using XDA
Click to expand...
Click to collapse
Nice one wouternet but can you also take the picture of the other side of the board? But thank you anyway i will need both sides of that board
Sent from my Dorimanx powered HTC HD2

It would be easier if you said what part your looking for
Don't mind the black stuff, I used a marker to mark this bricked mainboard
Sent from an awesome HD2 running Hyperdroid in a galaxy far far away

i am sending a pic of that place. its a small smd probably but i am not sure . the location of that part or better say place is very near to the edge of board it is the last solder point to the 3 gold connect points i am not sure for what they are used for. probably for extended battery? i just need to know if there is som smd part or not. because it looks suspicios on my board and i think that this is why main speaker is not working on my hd2 since i disassembled hd2 to repair vol buttons. flex cables are ok i already checked them because i remember when i bought phone the sound was not working because main flex was not properly pluged in on main board. i was very careful whem i was dis and assembling phone . i dont understand why aound is no longer working.

Nah there is nothing there. At least nothing that can break off easily. I'm sure the problem is somewhere else.
Is it the earpiece not making sound or is it the speaker on the back?

wouternet said:
Nah there is nothing there. At least nothing that can break off easily. I'm sure the problem is somewhere else.
Is it the earpiece not making sound or is it the speaker on the back?
Click to expand...
Click to collapse
yep it is back speaker that is not working. I dunno what cause that problem with no sound
Sent from my Dorimanx powered HTC HD2

Well the problem should be near the GPS board... Or in the rear shell....
check this: (No need to take the speaker out) http://www.ifixit.com/Guide/Installing-HTC-HD2-PB81120-Phone-Speaker/5605/2
And this is where it connects: http://guide-images.ifixit.net/igi/IKePYgHa1GxX1vZF.huge
It's left from the camera, between the Camera module and the where the white wire connects to the board. There is should touch the 2 golden squares.

wouternet said:
Well the problem should be near the GPS board... Or in the rear shell....
check this: (No need to take the speaker out) http://www.ifixit.com/Guide/Installing-HTC-HD2-PB81120-Phone-Speaker/5605/2
And this is where it connects: http://guide-images.ifixit.net/igi/IKePYgHa1GxX1vZF.huge
It's left from the camera, between the Camera module and the where the white wire connects to the board. There is should touch the 2 golden squares.
Click to expand...
Click to collapse
i will check that place near gps. Or maybe the speaker is broken. I will try another one if that help. I will let you know later when i fix it. Thank you wouternet.
Sent from my Dorimanx powered HTC HD2

Well you was right about the place near GPS where speaker is connected to the phone. The problem was there. For some reason one of the golden square dont work anymore lol. Weird huh. So the solution I have found out was to connect that non-working golden square to the little golden O point between those 2 golden squares.
Here is a picture
Selected red places are the points that are working.
So i connected non working golden square to the O point between those two golden squares with solder and after that woalaa. Speaker is working.
I still dunno why this golden square caused the problem because it looked like it is solidly attached to the board. But anyway speaker is working and I feel peacefully .
I will edit this thread as a guide if somebody needs it. I also fixed camera flash light because everybody who dissasembled HD2 know that cable from camera flash light connected to the mainboard is very fragile and it can be easily torn out of the connector and if you want to put it back into the connector it is really painfull and not always work so I decided to solder it to the board on camera flash light.
Here is a picture how I did it.
I connected those coloured cables using solder to the golden O points on camera flash light board as it is shown on the picture. Woalla again it works. Its free if you have soldering tools and some experience with soldering .

Thanks so much for sharing your solution.
Exactly this hint has given the life back to my phones speaker.
I used very thin copper wire to connect the 2 points.

wouternet said:
This is what I had laying around
Sent from my HTC HD2 using XDA
Click to expand...
Click to collapse
Please, I need a photo of USB motherboard zone area, zoom in,

motherboard htc hd2 t-mobile
I have a HTC HD2 from T-Mobile USA, which broke my motherboard. if anyone has any idea if it matches a motherboard in hd2 hd2 for Europe which my phone is t-mobile. I mean plugs, screws, joints ... etc.. I think that maybe easier to find the motherboard but if I search for a motherboard to hd2 t-mobile phone.
please if you can help me with any information any connoisseur, is welcome or if someone has motherboard for sale in working condition with no problems (not boot the, to lock up, etc ...) to me leave message here
sorry for bad eanglish

[Q] u8800-51 touch screen bottom not responding

u8800-51 touch screen bottom not responding
hi all
i am new and ignorant
(love the xda rules vid)
just bought second hand at&t impulse 4g (u8800-51) , with the bottom half of the screen, not responding to touch.
the top half works
i was told that it happened when the device got dropped.
the picture is good.
got stuck in at&t logo boot loop, and erased back to original on the android rescue screen. and its booting again
tried to reassemble the screen , but no change.
will replacing the glass plus digitizer solve it?
is there a difference between u8800 and u8800-51 screen parts? (or any other hardware for that matter?)
thanks alot

Switching the touch screen (glass) will fix your problem.
In which side do you have the notification led on? Right or left of speaker?
If it is on the right, you probably have the smaller speaker system (that's good to know if you are buying with the frame).
There is no difference in the sockets, however I have seen all Impulse 4G have the Synaptics version (black flex cable), so it would be better if you'd buy that. Some of the eBay sellers are offering the official AT&T touch screen, with the logo on it, so that would be a safe place to buy from.
-EDIT-
Some more things to know:
When they are selling with a frame, you can see it on the picture and they usually mention that somewhere too. If you took the phone open, it's easy to tell if it's big or small by looking whether it looks like this (big speaker).

Blefish said:
Switching the touch screen (glass) will fix your problem.
In which side do you have the notification led on? Right or left of speaker?
If it is on the right, you probably have the smaller speaker system (that's good to know if you are buying with the frame).
There is no difference in the sockets, however I have seen all Impulse 4G have the Synaptics version (black flex cable), so it would be better if you'd buy that. Some of the eBay sellers are offering the official AT&T touch screen, with the logo on it, so that would be a safe place to buy from.
-EDIT-
Some more things to know:
When they are selling with a frame, you can see it on the picture and they usually mention that somewhere too. If you took the phone open, it's easy to tell if it's big or small by looking whether it looks like
thank u so much
after a long study of the different pics of sellers, i remain a confused, because i finally found enough pics
(attached)
to realize that my model always have the black cable u mentioned which comes with a SMALL speaker, while the big speaker always come with the yellow cable, but alas, my device comes with a black cable, but big speaker,
so should i go with cable color + name mentioned (AT&T Impulse 4G) + AT&T logo, (which all calls for a Small speaker) OR , should i go with speaker size (big) ?
regarding my indicator position, it is to thr right when i look from the inner angle (like the photo of the big speaker that u added
Click to expand...
Click to collapse

That's the digitizer only. I don't think it's glass really, but it's easier to say it is.
I replaced mine by taking off the old digitizer from the frame. It came off pretty easily, it just needs some patience to take it apart without breaking it.
If you don't want to mess with glue, I'd suggest this: http://www.ebay.co.uk/itm/Digitizer...356?pt=LH_DefaultDomain_0&hash=item4abfc0011c
It's without the AT&T logo. I cannot guarantee it will fit though, there is always this chance Huawei modified something else between the U8800 and -51.

Blefish said:
That's the digitizer only. I don't think it's glass really, but it's easier to say it is.
I replaced mine by taking off the old digitizer from the frame. It came off pretty easily, it just needs some patience to take it apart without breaking it.
If you don't want to mess with glue, I'd suggest this: http://www.ebay.co.uk/itm/Digitizer...356?pt=LH_DefaultDomain_0&hash=item4abfc0011c
It's without the AT&T logo. I cannot guarantee it will fit though, there is always this chance Huawei modified something else between the U8800 and -51.
Click to expand...
Click to collapse
Takes over 15 days. I guess you can use adhesive tape to stick it.
http://pages.ebay.com/link/?nav=item.view&id=19075902577
Sent from my U8800-51

Dissenters tWellf
Somcom3X said:
Takes over 15 days. I guess you can use adhesive tape to stick it.
( linked reposting banned for me by the forum)
Sent from my U8800-51
Click to expand...
Click to collapse
thanks allot again
the Ebay links leads to:
"This listing (19075902577) has been removed, or this item is not available.
Please check that you've entered the correct item number
Listings that have ended 90 or more days ago will not be available for viewing."
???

Blefish said:
That's the digitizer only. I don't think it's glass really, but it's easier to say it is.
I replaced mine by taking off the old digitizer from the frame. It came off pretty easily, it just needs some patience to take it apart without breaking it.
If you don't want to mess with glue, I'd suggest this:
It's without the AT&T logo. I cannot guarantee it will fit though, there is always this chance Huawei modified something else between the U8800 and -51.
Click to expand...
Click to collapse
thanks Blefish
i prefer not to risk peeling, for breakage, and gluing, for moisture and mess.
i am starting to think that my digitizer was not original, and that is why it failed.
and feels like plastic. i found an original part at cellulardr.com for about 70$ vs. the 10-$15 ebay ones.
so maybe the seller put on impulse 4g, a big earpiece frame, with a yellow cable digitaizer. what a mess!
i attach a pic of big vs small earpieces. i believe the ''big'' is the one with golden terminals.
i think i will get a cheap ebay small earpiece frame with a black cable digitizer (like the original had, i believe) , with a 5$ small earpiece as extra.
god. why do i feel like Sherlock Holmes ?

http://pages.ebay.com/link/?nav=item.view&id=190759025771
This is only with glass.
You can buy a used one for under $70 or an OEM frame with glass. In my op, its not worth to fix.
(Oem->Original equipment manufacturer)
Sent from my U8800-51

Somcom3X said:
http://pages.ebay.com/link/?nav=item.view&id=190759025771
This is only with glass.
You can buy a used one for under $70 or an OEM frame with glass. In my op, its not worth to fix.
(Oem->Original equipment manufacturer)
Sent from my U8800-51
Click to expand...
Click to collapse
thanks
i am sorry - what is not worth fixing ?
yes, i am going to buy a small earpiese frame with black cable plus a small earpiece,
but seeing my old digitizer, i am starting to think (because of the price difference from the original) that all these E-bay so called "glass" , 10-15$ , advertized digitizers ,are actually made of plastic ??
but i will not "invest in an expensive glass before i am happy with the new device.
so far i have not seen used original digitizers.
if i am happy with the device, i might start looking for a"for parts" u8800-51 deal on E-bay
thanks again

hove64 said:
thanks
i am sorry - what is not worth fixing ?
yes, i am going to buy a small earpiese frame with black cable plus a small earpiece,
but seeing my old digitizer, i am starting to think (because of the price difference from the original) that all these E-bay so called "glass" , 10-15$ , advertized digitizers ,are actually made of plastic ??
but i will not "invest in an expensive glass before i am happy with the new device.
so far i have not seen used original digitizers.
if i am happy with the device, i might start looking for a"for parts" u8800-51 deal on E-bay
thanks again
Click to expand...
Click to collapse
The phone is not worth fixing.
Sent from my U8800-51

Somcom3X said:
The phone is not worth fixing.
Sent from my U8800-51
Click to expand...
Click to collapse
i am sorry....why not worth fixing ?
20$ plus a little more work and i have got a working smart phone - no ?

hove64 said:
i am sorry....why not worth fixing ?
20$ plus a little more work and i have got a working smart phone - no ?
Click to expand...
Click to collapse
Yes, but $70 and you have a brand new one. Basically, fixing it is more trouble than selling it.
Sent from my U8800-51

Somcom3X said:
Yes, but $70 and you have a brand new one. Basically, fixing it is more trouble than selling it.
Sent from my U8800-51
Click to expand...
Click to collapse
thanks
the cheapest new impulse 4g i could find cost 150$. i do get your point, but i already invested time and money on it and i can't sell a device that i am not sure of his condition. also its a little bit exciting for me if i manage to make it work.

is there any way to bypass the faulty touch screen ,for sake of testing the phone,
with some external device such as usb\Bluetooth mouse and keyboard ?

hove64 said:
is there any way to bypass the faulty touch screen ,for sake of testing the phone,
with some external device such as usb\Bluetooth mouse and keyboard ?
Click to expand...
Click to collapse
Recovery or adb commands
Sent from my U8800-51

Somcom3X said:
Recovery or adb commands
Sent from my U8800-51
Click to expand...
Click to collapse
thanks
i will check if adb can help

user gone mad: USB got off

Hey guys!
Today i got my hands on curious thing. My friend was drunk "as he stated" and somehow he was able to tore off USB port from his beloved HD2. Crazy right, I didnt even believe it was possible as I am an owner of HD2 myself. So Im thinking about maybe try to solder it back together (if possible).
There are some pictures as attachements so you can take a look. The casing isnt damaged at all, its like that USB just fell of.

QQboss said:
Hey guys!
Today i got my hands on curious thing. My friend was drunk "as he stated" and somehow he was able to tore off USB port from his beloved HD2. Crazy right, I didnt even believe it was possible as I am an owner of HD2 myself. So Im thinking about maybe try to solder it back together (if possible).
There are some pictures as attachements so you can take a look. The casing isnt damaged at all, its like that USB just fell of.
Click to expand...
Click to collapse
Connector seems burnt, just curious what you'll find inside... If the mainboard look like this that's bad news.
A new connector is cheap but there are different shapes of the inner part so it is possible that it won't fit, check before you begin to solder.

Looks badly burnt to me.
I suspect mainboard no good for repair but worth checking first.
Quite easy to pick up an EU version HD2 for around 40USD (faulty handset) on eBay if can spend a bit of time looking/bidding and in good shape except digitizer, then simply donor best parts to complete one working rebuild.

Hey thanks for replyin! Well I opened it up and it seems motherboard isnt damaged. Well, as far as I can tell . Phone is working with charged battery without problems, so I think its worth a shot. Take a look and tell me what do you think

QQboss said:
Hey thanks for replyin! Well I opened it up and it seems motherboard isnt damaged. Well, as far as I can tell . Phone is working with charged battery without problems, so I think its worth a shot. Take a look and tell me what do you think
Click to expand...
Click to collapse
I had a hd2 in a similar condition and attempted this. I failed and it killed the mboard straight away i would only attempt if you really really need too ;/
Sent from my Nexus 7 using Tapatalk HD

hey buddy, thanks I will be really carefull. I cant really tell you what good is a phone like this without USB connection (and dont forget charging), so this is "operation: must do". Sorry for your HD2 though.

You can pick up a new usb socket from eBay/amazon etc.
It is quite a tricky bit of small soldering & can be very hard if contact points on board are broken below board.
Worth a try but not easy ... If you do succeed, once tested working ok use PU40 adhesive sealant to pack around sides & back of socket as will insulate & help secure socket hopefully helping reduce chance of fracturing joins or dislocating completely again.

Yup! USB is already on the way. Thanks for tips buddy, I will check back here when its done , it should take few days untill new USB is here.

QQboss said:
Yup! USB is already on the way. Thanks for tips buddy, I will check back here when its done , it should take few days untill new USB is here.
Click to expand...
Click to collapse
Any news? Did you succeed with the soldering?

straylight975 said:
Any news? Did you succeed with the soldering?
Click to expand...
Click to collapse
I'm also interested Any news?
Sent from my Nexus 4 using Tapatalk 4 Beta

I wish you all the luck, 'cause you gonna need it! (but maybe you're a soldering master and you know what you're doing...)