[Q] HD2 motherboards - HD2 General

Thanks to HTC and the garbage job they do baking the electrical components in their phones I am looking for a HD2 mobo or someone who can do some PCB repair and at least get my mobo charging again. I have dumped money into a new digitizer and lcd, front keypad and mobo main flex cable and the main problem that caused me to destroy all those parts in the first place (micro usb port) still isnt fixed after my attempt at resoldering it to the board. Anyone? Thanks ahead of time, I've lurked here for a while and never really posted so I cant look in the classifieds I take it.

BullGawd said:
Thanks to HTC and the garbage job they do baking the electrical components in their phones I am looking for a HD2 mobo or someone who can do some PCB repair and at least get my mobo charging again. I have dumped money into a new digitizer and lcd, front keypad and mobo main flex cable and the main problem that caused me to destroy all those parts in the first place (micro usb port) still isnt fixed after my attempt at resoldering it to the board. Anyone? Thanks ahead of time, I've lurked here for a while and never really posted so I cant look in the classifieds I take it.
Click to expand...
Click to collapse
Are you by any chance located in the New England area? If so, I may be able to help you out. We would have to meet up somewher. If not, good luck finding some that can solder contact points that small.
Sent from my ADR6425LVW using XDA

Jaytronics said:
Are you by any chance located in the New England area? If so, I may be able to help you out. We would have to meet up somewher. If not, good luck finding some that can solder contact points that small.
Sent from my ADR6425LVW using XDA
Click to expand...
Click to collapse
Unfortunately no, Im in central Florida

I'll post some pics later when I get home from work, when the port broke it lifted the traces for pins 4 and 5 which I understand are the ground. Pin 1 is apparently the +5 volt pin. Thats all I need, I can do without being able to communicate with the phone via PC. I really have no reason to use ADB with this handset and any ROMS can be loaded via my SD reader/writer in my PC and just reinsert the card to the phone after.

Related

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] Scrap Screen Part

I rather recently received this chinese tablet, and unfortunately whilst charging the tablet it stopped powering on and working period, so I took it apart and salvaged the working parts. I am inquiring about the name of the screen connector and the touch surface connector. I have attached images of them both below.
Anyone?
Anyone? please?
Anything written on the back of the screen which may help?
MacaronyMax said:
Anything written on the back of the screen which may help?
Click to expand...
Click to collapse
Nope just empy space my best guess would be a C or D sized ribbon cable but im not sure and If I can learn the pin out I can just wire it up to a VGA or the likes the touch screen is another story I also need to know how much power this thing runs on because Im sure ive got the resources to power it.
The main thing is getting the LCD controller: is there some chip or PCB somewhere on (or inside maybe?) the housing of LCD display? If not, you'll find the chip on the tablet's mainboard, and by searching for it's name, you might find a complete controller with VGA/S-Video/Composite/RGB input (something that's supported by controller), and you hook up the display there.
Simpler way, how I'd do it, would be to look up for the datasheet of chip on the Google, and then wire the inputs according to pinout in datasheet.
It might take time to find out how to power it up and how to feed it with image, but in the end it should work - currently I'm working on a same thing, but with LCD taken from portable DVD player with controller in the LCD housing.
It seems to have the controller on the accessory board, I will try to look for the data sheets like you said, thank you so much
Sent from my SGH-T959V using XDA
Your post is asking for the name of those 2 connectors? They are called flexible ribbon cable, easy to break and imo not really flexible at all, cause they break.
Can't remember how many of those buggers I broke over the years.
sent from my legend, currently using extream legend fuse™
ranger4740 said:
Your post is asking for the name of those 2 connectors? They are called flexible ribbon cable, easy to break and imo not really flexible at all, cause they break.
Can't remember how many of those buggers I broke over the years.
sent from my legend, currently using extream legend fuse™
Click to expand...
Click to collapse
Just the information I needed thank you!

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...)

Soldering Micro USB Port

Is there anyway I can just solder a generic micro usb port onto the board (This one: http://www.ebay.co.uk/itm/New-ASUS-Google-Nexus-7-First-Gen-Charging-Port-REV-1-2-/141138826759?pt=UK_iPad_Tablet_Chargers_Sync_Cables&hash=item20dc879607), reason being is that everything works fine except for the micro usb board (a pin broke when I was trying to fix it) how easy would it be to do it and can it be done?
dilzo said:
Is there anyway I can just solder a generic micro usb port onto the board (This one: http://www.ebay.co.uk/itm/New-ASUS-Google-Nexus-7-First-Gen-Charging-Port-REV-1-2-/141138826759?pt=UK_iPad_Tablet_Chargers_Sync_Cables&hash=item20dc879607), reason being is that everything works fine except for the micro usb board (a pin broke when I was trying to fix it) how easy would it be to do it and can it be done?
Click to expand...
Click to collapse
You're just wanting to pull the port off the new board and soldier it on the old board? I don't see why it won't work so long as the joints match up and the legs are not to long. The pin out should be the same. I think you should be fine.
Edit: I guess I should have looked better. I don't know if the first gen has the same layout as the 2nd gen. I can't say if that whole piece will fit right.
LinearEquation said:
You're just wanting to pull the port off the new board and soldier it on the old board? I don't see why it won't work so long as the joints match up and the legs are not to long. The pin out should be the same. I think you should be fine.
Edit: I guess I should have looked better. I don't know if the first gen has the same layout as the 2nd gen. I can't say if that whole piece will fit right.
Click to expand...
Click to collapse
I'm saying If I get some generic port off eBay for a couple quid will I be able to solder it onto the old board that looks like the one in the picture? I stupidly posted this in the nexus 2013 forum however this is indeed for first gen. Thanks.
Sent from my Nexus 7 using xda app-developers app
dilzo said:
I'm saying If I get some generic port off eBay for a couple quid will I be able to solder it onto the old board that looks like the one in the picture? I stupidly posted this in the nexus 2013 forum however this is indeed for first gen. Thanks.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Gotcha, you should be fine.
dilzo said:
I'm saying If I get some generic port off eBay for a couple quid will I be able to solder it onto the old board that looks like the one in the picture? I stupidly posted this in the nexus 2013 forum however this is indeed for first gen. Thanks.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
The only thing which is standardized about the connector shell is the mechanical details of the mating portion of the connector. How the rest of it mates mechanically and electrically to a supporting PCB/PWB does not need to be standardized at all. So, if you happen to end up with the exact same connector, then great. Just any connector? Not so much.
You might be fine attempting it, but there are risk of damaging the PCB (cracking vias barrels from their land pads (too much heat), accidentally tearing surface copper pads off during component removal, etc.
A good electronics technician will have a number of tricks & techniques for rework/repair operations (e.g. using an excess solder flood during component removal), but chief among these is being able to carefully control the amount of heat being applied (tip choice and a variable temperature controller for the iron).
I bring this up because the cost of everything you need to perform the job well exceeds the part cost for that whole headphone jack/USB port flex cable assembly (US $50) unless you have those good tools already. (I have to suppose you don't; otherwise you could have answered your own question)
If you can find the right connector shell and are determined to do the job with a cheap soldering iron, do yourself a favor and at least buy some paste flux (Kester?) and some fine copper "solder wick" braid along with the solder you buy. And it is probably also a good idea to disassemble the N7 so you are not trying to perform the repair "in place").
good luck
LinearEquation said:
Gotcha, you should be fine.
Click to expand...
Click to collapse
Yeah seems like too much of a hassle, I think I'd just buy the whole board thanks.
Sent from my Nexus 7 using xda app-developers app
dilzo said:
Yeah seems like too much of a hassle, I think I'd just buy the whole board thanks.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
If you haven't ordered it and you are UK based (from the ebay.co.uk) then PM me with your address and I'll send you a used one FOC.
Do you still have this?
peterk-1 said:
If you haven't ordered it and you are UK based (from the ebay.co.uk) then PM me with your address and I'll send you a used one FOC.
Click to expand...
Click to collapse
Do you still have it available for a Nexus 7 2013? I'm in France but I am willing to pay for the shipping fees. That would help me immensely as my tablet has stopped charging... :'(

Swapping Motherboard

Unfortunately I dropped my xt907 (with some serious force) and smashed the screen.It appears that the phone itself is still functioning because lights are flashing, its making notification sounds and when connecting to my computer via USB i can access all my files. Since i dont want to buy a new one and be handcuffed with a locked boot loader I'm going to attempt a repair. Does anyone know if putting my motherboard into another phone (maybe with a bad ESN) will bring my phone back to life? My other thought was to salvage the motherboard, battery and camera and just install them in a brand new LCD screen, digatizer and backing. any feedback would be appreciated!
Just pick one up off Ebay or something and swap the screens... Its rather easy to do in my opinion... I usually grab one that's water damaged...
Sent from my XT907 using xda app-developers app
ezknives said:
...
Click to expand...
Click to collapse
Btw how is KK soak bld hunting getting on?
I wish it was as simple as replacing the screen but the backside got all messed up too. I managed to get the board out but in doing so there was a tiny metal hinge looking thing that broke off the backside of the board next to there the power plug. I'm sure that completes a circuit somewhere so I guess my little project is over. not good.
aviwdoowks said:
Btw how is KK soak bld hunting getting on?
Click to expand...
Click to collapse
The ole lady won't let me on the PC to flash back to stock I on the hunt for a recovery flashable unmodified stock ..
PantherVT said:
I wish it was as simple as replacing the screen but the backside got all messed up too. I managed to get the board out but in doing so there was a tiny metal hinge looking thing that broke off the backside of the board next to there the power plug. I'm sure that completes a circuit somewhere so I guess my little project is over. not good.
Click to expand...
Click to collapse
can you post a pic...
Sent from my XT907 using xda app-developers app
here are some photos. I have circled the area of the motherboard that was chipped. In motherboard1 the piece that broke off is in the photo as well. In the backing photo I circled the area that may be a contact point to complete a circuit.
Yeah that looks done... It may just be for the wifi but doesn't look like it can be Jimmy rigged ... I was thinking maybe a touch of foil on it but I don't see any tracers to make the connection
Sent from my XT907 using xda app-developers app
Yeah i think some solder and a a little luck would be my only shot. Ill probably just try to buy a used one that someone already unlocked.
That's for the LTE Rx antenna. The motherboard will probably still work, but you will have diminished LTE reception.
That motherboard might still be useful for someone who is using their phone on GSM networks and can't use LTE anyway.
I might be interested in it if you'd be willing to sell it real cheap.
GnatGoSplat said:
That's for the LTE Rx antenna. The motherboard will probably still work, but you will have diminished LTE reception.
That motherboard might still be useful for someone who is using their phone on GSM networks and can't use LTE anyway.
I might be interested in it if you'd be willing to sell it real cheap.
Click to expand...
Click to collapse
Thanks for the explanation. If I end up selling I'll let you know. Do you think the antenna can be reattached and become fully functional again?
PantherVT said:
Thanks for the explanation. If I end up selling I'll let you know. Do you think the antenna can be reattached and become fully functional again?
Click to expand...
Click to collapse
Hard to say, but in my opinion, the answer is YES. I don't think you'll have any chance of finding the broken trace, I sure can't see it in that photo and I'm guessing it's not visible. However, I bet one of those tiny components near where it used to be was directly connected to it. You would need either a wiring diagram or trace an undamaged motherboard with the ohms setting of a multimeter to see if any of those components were directly connected to the terminal. You could then probably reform that gold terminal with tweezers, and solder a very, very tiny wire between the solder end of the appropriate component and that terminal and use a good strong epoxy to glue the terminal back down to the board in its correct location. You'd need a really good pencil-tip soldering iron, really steady hands, and good soldering skills to do that kind of micro-soldering.
I'm thinking to part out the RAZR M that I bricked over the weekend. If you're interested, I can test my board to see if any of those nearby components have continuity to the terminal.
Not sure if you're still wanting to fix it, but I pulled my bricked RAZR M apart today and saw this is a pretty easy fix.
That terminal connects directly to the lower of the 2 black SMD components. In fact, I didn't notice before, but in your pic there is still some visible trace connected to it. Should be pretty simple to epoxy the terminal back onto the board and solder a short piece of wire onto the remainder of the trace.
I do want to fix it and will be giving it a try! I'll post the results
PantherVT said:
I do want to fix it and will be giving it a try! I'll post the results
Click to expand...
Click to collapse
Good Luck.
I made a Mobo Transplant also once.
Got a Broken LCD phone which was damaged before the OTA (that locks our BL)
And took that and swapped it into mines =)
Now i have a good Phone with a Unlocked BL
And sold my old one back out for same price =) Win Win for me.

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