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Hi,could anyone with knowledge confirm what component is it?
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It fall off pcb,and i could not find it
Refreshing post
b.u.m.p #2
how do u know something is missing? maybe there was nothing there to begin with.... does the phone not work when u put it back together?
edit: after searching a bit i found a couple pictures that shows the HD2's motherboard and some show a black component there and some dont. see attached pics. so maybe yours didnt have anything there to begin with. these components are soldiered onto the board, components dont just fall off...
maybe it depends if your phone is a US or EURO model?
rlee
here you can buy a new one
go on cgi.ebay.de and put this following link behind
/Mainboard-Motherboard-For-HTC-hd2-leo-T8585-/260819122167?pt=LH_DefaultDomain_0&hash=item3cba07f7f7[/url]
tamerkilinc said:
here you can buy a new one
go on cgi.ebay.de and put this following link behind
/Mainboard-Motherboard-For-HTC-hd2-leo-T8585-/260819122167?pt=LH_DefaultDomain_0&hash=item3cba07f7f7[/url]
Click to expand...
Click to collapse
does it has to be cgi.ebay.de?or can i use .com? bwwwwahaha,price is awesome
Well,component was stripped with screwdriver,not by me.
Btw,it is US version
Empty places on boards are not unusual. Have a look on your PC's mainboard, I bet you'll find several of them there, too.
The reasons vary. At times it is because some feature originally was planned, but didn't make it into production. Redesigning the board costs much more than simply letting out some parts.
But most of the times it is due to variations of the hardware. Some chips need external parts while other, doing the same job, don't.
When you have to produce millions of a device, you have to consider that occasionally you can't use the exact chip types in all devices and partially have to use other compatible chips. So most boards are designed to cover several variants of equipment - where chip A needs this specific external piece, while chip B, which is soldered to your board, doesn't.
If your phone works flawlessly, then the empty space is ok, no reason to change anything.
If there really has been a chip on the empty place, there are explicit marks on the soldering pads. Are their surfaces clean and shiny? Then there has never been anything soldered to it, otherwise they have a rough surface, clearly showing that something was ripped off. This can happen if the soldering process was bad. But this happens really rarely, especially in upper class smartphones.
(Had this on a PC RAM some years ago, the EEPROM simply fell off the board... and some of the good old Nokia 6210 had problems with bad soldering, but this affected only a few pins of a single chip.)
So if you can post a macro pic of the empty place, I can have a look and tell you if there has been anything on it or not.
justmeandmyphone said:
Empty places on boards are not unusual. Have a look on your PC's mainboard, I bet you'll find several of them there, too.
The reasons vary. At times it is because some feature originally was planned, but didn't make it into production. Redesigning the board costs much more than simply letting out some parts.
But most of the times it is due to variations of the hardware. Some chips need external parts while other, doing the same job, don't.
When you have to produce millions of a device, you have to consider that occasionally you can't use the exact chip types in all devices and partially have to use other compatible chips. So most boards are designed to cover several variants of equipment - where chip A needs this specific external piece, while chip B, which is soldered to your board, doesn't.
If your phone works flawlessly, then the empty space is ok, no reason to change anything.
If there really has been a chip on the empty place, there are explicit marks on the soldering pads. Are their surfaces clean and shiny? Then there has never been anything soldered to it, otherwise they have a rough surface, clearly showing that something was ripped off. This can happen if the soldering process was bad. But this happens really rarely, especially in upper class smartphones.
(Had this on a PC RAM some years ago, the EEPROM simply fell off the board... and some of the good old Nokia 6210 had problems with bad soldering, but this affected only a few pins of a single chip.)
So if you can post a macro pic of the empty place, I can have a look and tell you if there has been anything on it or not.
Click to expand...
Click to collapse
Here,i added best macro i could get
Looks to me as if the pads are virgins, have never seen any solder. So if your phone doesn't have any malfunction, everything should be fine.
This component is smd female plug for led power thanks everyone for comments,maybe someone will have use of this...
Sent from my Milestone using XDA App
Are the PA for HTC Touch HD2 from Avago?
I miss my girlfriend and am going to be away from her until maybe march of 2012. i am hoping i'll be able to make it back to her by valentines day, but i don't think i can so i'm making her a gift. she was talking about how she wanted to buy a tablet, but someone broke into her car and she had to spend the money on parts to fix her car. i'm just a broke college student with a smartphone i don't use and would like to take that apart and add a few parts then put it inside of a custom case and add an ipad 2 touch screen digitizer. i simply plan on taking my hd2 apart and extending the receiver and speakers and making a few minor adjustments. i then plan on adding larger speakers and converting the software in the hd2 into android and adjusting the resolution size to fit the ipad. i also have a few questions about increasing the memory size with multiple micro sd cards. i really want help from you guys on this please. give me all the info i need! i'm just getting info this month and building it next month, and thank you all in advance for your help.
Post pic's when you're done)
thank you i will. i'm currently just doing the research because i'm not too sure how to connect the digitizer to the HD2 but i am trying to find out how and if i would need any special parts.
As for the UI, this is brilliant and there's a tutorial on how to do this if you search the uploader's channel.
Unfortunately, I have no hardware-related experience at all, being only 14 And as stated, please post pics when done
just here to update you guys on my current progress. i've been having trouble figuring out how to connect the lcd display and digitizer to the HD2 so i'm current THINKING about the possibility of removing the small cell phone connections to the lcd display and digitizer and just soldering normal ones on so they can connect properly but then i wonder if the power output would also need to be switched out? i've also been THINKING about just removing all parts from cellphone motherboard that i need and mounting them onto a standard sized motherboard so i can easily and properly mount any adjustments that i make, but this is the first time i'd be doing any of this or anything like this. i do have an extra smartphone that i can try this out with first and let you know the results. i'll post pictures and videos when i finally start building this thing. again, i am gathering all the information i can for this month and i'll start building towards the end of december or beginning of january. sorry to take so long to do this all but i have to save up and research is always a good way not waste money. i appreciate all tips and i think i'll be using the software in that youtube video that was posted above. it looks absolutely amazing, plus i'll be increasing the memory size for this along with an attempt at upgrading the original parts if possible while still going the cheapest route possible.
I wish you the best of luck!
thanks man. i've figured out that either it would be incredibly difficult to do it with the ipad screen but, the motorola xoom or blackberry playbook screens are more compatible. the xoom screen in particular looks very promising because of its small connection and i'm currently trying to figure out if i'll need a more powerful power supply or not. i think that i will so i'm also weighing my options to see if i can just can a broken tablet or two from craigs list for free or if i'll need to buy one and if i do which one should i look for. any and all help i really do appreciate from you guys and when i start building i'll post pictures and videos.
Dude u r taking a nearly impossible task. U cant fit a big screen to the mother board. Coz an lcd consists of not only a pannel, it have a display ram embedded in it, for that u need correct pin outs and drivers in ur mother board which are made 100 percent for the default display only. U can switch display in smaller phones like old nokia 1110 , etc, in that case 2... the displays are not 100 % compatible. Also u have drivers and circuits in the mother board even 2 Control the led backlight. And are done with proper voltage output control. So better u dont crap up ur phone. If she is in such a need, give the phone 2 her. And buy a new 1 for yourself. Its not simple as u change ur speakers. If you are so advanced, i may help u with these tips.
U have to find a display with 100 similar specifications..
U have to modify ur display driver and backlight driver.
U have 2 make changes in circuits in motherboard.
If u success in all, u r done.
Better buy her a cheep netbook/ tablet...
send from my hd2 @ miui 1.12.2
I just want to point out that at the end of all this, you may have spent enough on parts to just get a cheaper tablet, like an HP Touchpad or something.
Also, it's extremely difficult to fit a lcd/digitizer from a device onto another device because of several issues:
1. difference in physical connector shape / size
2. difference in connector pinouts (pin1 may be 5V on 1 screen, but may be GND on another)
3. difference in voltage/amp requirements for screens (not sure on this one, but I'd say a bigger screen uses more power, but the circuitry of the HD2 may not provide it)
Search e bay. U can get several tabs at lo cost.
send from my hd2 @ miui 1.12.2
I have two phones. One is a busted screen g935f.
I want to take the guts out of the g935f and put it
In the g935v (which is a Qualcomm variant) and use
The body and the screen of the g935v. Will the parts
Fit? Will it work?
Thank You!
As far as I know the only difference betwee these two models is just the cpu
The design screen size and what not is the same, so it should work.
I've heard that the placement of some of the parts are a little different Between the Qualcomm and Exynos versions but I'm not sure.
That the body or frame is manufactured a bit different from the two.
It would be so much easier than having to tamper with that ridiculous edge screen.
Just take the backs off and swap parts.
Logic would dictate that the bodies are the same
Inside But, knowing how stupid these companies are.
Even if I have to forget about the camera connections. I just want access to all the Exynos roms here at xda.
Hello, guys/girls.
The thing is I already changed the battery of the device, now I have to change the charging port because it is getting to a point where I can hardly charge the device.
My points is this:
Can I get some damaged galaxy s8 950F with broken screen lets say and just get the motherboard with the SoC and swap it with mine because I hate myself for not searching to see that the snapdragon is bootloader locked and I hate that.
Thank you and have a lovely day!
Nikola2016m said:
Hello, guys/girls.
The thing is I already changed the battery of the device, now I have to change the charging port because it is getting to a point where I can hardly charge the device.
My points is this:
Can I get some damaged galaxy s8 950F with broken screen lets say and just get the motherboard with the SoC and swap it with mine because I hate myself for not searching to see that the snapdragon is bootloader locked and I hate that.
Thank you and have a lovely day!
Click to expand...
Click to collapse
It's almost a certainty that it would not work with just a motherboard swap. As far as I know the screen and frame and probably some small parts like the vibration motor, headphone jack, fingerprint reader, loudspeaker and possibly the wireless charging coil would be transferrable. You'd need the G950F motherboard, charging port board, camera modules (Snapdragon cameras are Sony IMX while Exynos cameras are Samsung ISOCELL and aren't interchangeable) and possibly the black plastic module at the top rear of the phone that contains the antennas. Basically you'd need a G950F with a broken screen to get all of the required parts.
Hai Karate said:
It's almost a certainty that it would not work with just a motherboard swap. As far as I know the screen and frame and probably some small parts like the vibration motor, headphone jack, fingerprint reader, loudspeaker and possibly the wireless charging coil would be transferrable. You'd need the G950F motherboard, charging port board, camera modules (Snapdragon cameras are Sony IMX while Exynos cameras are Samsung ISOCELL and aren't interchangeable) and possibly the black plastic module at the top rear of the phone that contains the antennas. Basically you'd need a G950F with a broken screen to get all of the required parts.
Click to expand...
Click to collapse
Thank you, Sir!
I am glad I post it here before buying the broken phone!
I have never changed a display before and I don't think I can do it because of the curved screen and I think I will brake the working one so I think I will stick with it.
Nikola2016m said:
Thank you, Sir!
I am glad I post it here before buying the broken phone!
I have never changed a display before and I don't think I can do it because of the curved screen and I think I will brake the working one so I think I will stick with it.
Click to expand...
Click to collapse
Well, you wouldn't actually be swapping the screen, you'd be keeping the screen and frame of your G950W and basically transferring all the components from the G950F into it. It's not terribly difficult to do if you have all of the parts, but you'd have to do your research to make sure you know how to do it. Lots of videos on YouTube and a guide on iFixit to go by.
Hai Karate said:
Well, you wouldn't actually be swapping the screen, you'd be keeping the screen and frame of your G950W and basically transferring all the components from the G950F into it. It's not terribly difficult to do if you have all of the parts, but you'd have to do your research to make sure you know how to do it. Lots of videos on YouTube and a guide on iFixit to go by.
Click to expand...
Click to collapse
I will second this. As i have repaired and dismantled several s8s. Their not really hard. But you most def need the right stuff to do it.
Thank you for the answers, gentlemen.
I will try that and see what happens.
Hi everyone,
I own a Priv and can't do without a keyboard. Seeing that (as of today) no new portrait slider has been announced, and modding the motherboard itself is unrealisitic, I've decided to find a motherboard and screen off a newer phone and sort-of slap them on a spare chassis I've got lying around.
Feel free to add suggestions and comments below, I need all the expertise I can get. Hit the like button if you're interested, so i can get a head-count. If you guys and gals are interested, I'll post pics as I go along.
Keyboard & Interface:
In an ideal world, I'd be using the priv's existing (and exquisite) PKB which also has touch capabilities for scrolling and moving the cursor. Unfortunately I've not yet found the pinouts for that (and is more complex to interface). I have however found a website where a good soul published info and diagrams for a Q10's Keyboard and then connected those to an IC using a board with a Hirose connector (which he then connected to a raspberry pi project). My plan is similar. Since I don't know at which point in the motherboard I can make an input for a keyboard, the best strategy is to wire the keyboard's interface chip into the USB connections, as Android natively supports USB keyboards and mice. I can then use a microswitch (mechanical or magnetic) to disconnect the keyboard's signal when the slider closes.
If someone does know the pinouts of the Priv's connector, do let me know, it would be great to be able to use it!
Motherboard & Screen:
First thing that springs to mind, is that since the screen will be sliding a couple of inches, the phone off which I'll take the screen and motherboard needs to have a long flex-ribbon, usually found when a motherboard is on the top, and the screen connects on the bottom (such as the oneplus 5). This also means the charging port would also be nice to be a separate unit. I'm not too worried about cooling as there's a nice big metal slider frame to which all this will stick on, but failing that, i could also make a metal back with shallow fins to dissipate heat. The less features there are directly on the screen, the less things are likely to fail.
Requirements:
So the basic point of all this is to have the keyboard hooked up to the motherboard of a rootable system which can be easily modified. Phones like Xiaomi, Oneplus ... fit this bill well. First thing that springs to mind is a Snapdragon 8xx as performance is of course, vital. The camera also needs to work although the resolution is not critical. NFC, Fingerprint sensor, SD card slot, GPS with Galileo, Wireless charging and other niceities are highly desireable, but I might give some of them up to accomodate other things depending on how critical they are. Unfortunately not many flagships have 5.4" screens or less, so the metal slider will be modified to accomodate this.
I'll choose a nice, big battery and place it in the bottom, right below the keyboard as the CoG needs to be really low to make the phone comfy to type on without letting it tip over.
Finally, a plastic or metal cover can be modelled to fit all this, and will probably be cheap to make. If the screen is bigger than the frame, i'll also have to make a second cover around the border, secured to the main slider frame.
The Q10's keyboard has arrived. The connector seen in the middle with a black ribbon has 24 contacts (plus 4 contacts in the extremities which are not counted, probably used for grounding). By comparison, the Priv connectors (male on top, female on motherboard) has 20 contacts despite the priv's trackpad function.
For those of you curious about the BB Passport, I've had a quick look inside and the connector is identical to the Q10's keyboard, although it works like the Priv. Rather confusing.
I'll be mapping the pinouts once the PCB and connectors arrive, unfortunately that's gonna be a long wait as they have to come to Germany from the U.S.
I finally have enough parts to start putting the encoder together. It is an SK5126 keyboard encoder from Sprintek. At just 7 x 7mm with 0.5mm pitch, it was not easy to solder on, but definitely doable with a bit of practice and common sense. The chip itself is not expensive (15usd a pop) but being in Germany, I had to pay through the nose for shipping and shameless customs. Sprintek's sales dept. have been very helpful though. Once I wired the PCB to an old USB cable (and a couple of resistors & capacitors), it was very much plug & play. I'm pleased.
Now it's time to wait again for the next bit of PCB and female connectors for the keyboards... It's at times like these that I regret the EU not having a trade agreement with the US.
The adapter PCB and Hirose female connector for the keyboard finally arrived today, but that's where the good news ends. Unfortunately the seller did not solder them together so I had to do it myself. That's when an obvious fact hit me in the face: the connector's melting point is lower than the solder paste's melting point. The first connector simply folded in a mess of molten plastic under the hot air. I tried the reballing method on the second (and last) connector, which simply pulled the individual legs of the connector apart.
Upon putting the PCB of the Encoder and the connector next to each other, it's clear that part of the success i had with soldering the encoder chip lied in having a footprint with nice long exposed contacts which allowed the surface tension of the solder to pull everything in place. That could not work on the much shorter footprint of the connector PCV. I've ordered some more connectors, it's gonna be a long wait, though I've yet to think of a proper way to solder without melting the connector.
So I've finally had a breakthrough. Some new PCBs arrived from Hong Kong and after a few molten connectors, I've managed to perfect the technique enough to not get any shorts. From there on, it was pretty straightforward. I mapped the keyboard's pinouts (red pcb) to the correct Row/Coloumn inputs of the encoder (green pcb) using the thin wires. It looks a bit messy until i figure out in which position the PCBs will sit inside the chassis.
I'm tempted to also try mapping the Priv's original keyboard, unfortunately, that's tricky, as there's no info about it online. It has a 20-pin connector (as opposed to 24 on the Q10) which also transmits touch input via a Synaptics microchip. I'll try going through it with a multimeter, if i can at least map out the button-matrix, then finding out the synaptics output will be a tad easier.
In the meantime, another issue is on my mind. I've been looking at teardowns of various snapdragon 7xx and 8xx phones and it's clear that some components (mostly the prox sensors) on most, if not all models, are soldered directly on the motherboard, which makes it difficult if I plan on putting the screen on the sliding portion of the chassis and the motherboard on the fixed portion of the chassis. I'm going to have to rethink the whole idea. If i put a lot of components on the sliding part of the chassis, then i risk making the phone top-heavy and thick. Unfortunately I do not have the technology to change this.
There is probably going to be a compromise somewhere, and I need to decide where to draw that line before I order more expensive parts.
very (!) interesting idea(-s) !!
I am incredibly curious to see the outcome, afraid I cannot really provide any help.
it is a real shame that blackberry didnt even provide some use-at-your-own-risk stuff to boot unsigned code...
maybe you want to try shopping for parts in china directly, I almost never pay customs (value below ~€20) for stuff.
cheers!
elchmartin said:
very (!) interesting idea(-s) !!
I am incredibly curious to see the outcome, afraid I cannot really provide any help.
it is a real shame that blackberry didnt even provide some use-at-your-own-risk stuff to boot unsigned code...
maybe you want to try shopping for parts in china directly, I almost never pay customs (value below ~€20) for stuff.
cheers!
Click to expand...
Click to collapse
Thanks mate.
I already buy a lot of parts from China, however 1 thing I couldn't find online from there was an easy-to-use, low power encoder. I had to get it from Sprintek in California. Their products are really good and the price is also good. Unfortunately i had to pay a lot of money for customs (which of course is not Sprintek's fault). The encoder chips themselves cost me around $15 each, the programming software is free and the chip responds right away as soon as you plug it into the pc. They also have a good after-sale assistance.
Kyle M. said:
Thanks mate.
I already buy a lot of parts from China, however 1 thing I couldn't find online from there was an easy-to-use, low power encoder. I had to get it from Sprintek in California. Their products are really good and the price is also good. Unfortunately i had to pay a lot of money for customs (which of course is not Sprintek's fault). The encoder chips themselves cost me around $15 each, the programming software is free and the chip responds right away as soon as you plug it into the pc. They also have a good after-sale assistance.
Click to expand...
Click to collapse
You are living in Hamburg, Germany?
Maybe try looking for parts at pollin.de
They served rather rare items for me some times...
Project continued on https://hackaday.io/project/168387-physical-keyboard-for-any-android-phone
I can finally update with some good news. After ironing out all the issues (most of which concern the pesky Hirose connector which connects the keyboard to the PCB), I took the 2 boards off the metal frame and made myself a little box from PVC sheets which I then glued to an old Xiaomi phone cover. The reason I am testing it this way rather than just building the slider I wanted to build is to prevent having to mod the Xiaomi phone while testing (I've grown quite attached to this phone despite having bought it cheap).
I have also put a small switch on the side which directly cuts off the power to the chip (this way it saves power and seems to work pretty fine).