Database Users

Is this possible? (component replacement)

I have a working TMOUS HD2 motherboard which have a "broken/ripped off" lcd connector.
I also have a non working/bricked TMOUS HD2 motherboard complete and without any physical problem.
Is there any possibility to replace this connector?
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Any help would be much appreciated.

Is the part here?
http://www.alibaba.com/showroom/parts-for-htc-hd2.html

I highly doubt it. That connector is more than likely surface mounted with little tiny pins soldered to the other side of the board, and would be amazingly difficult to remove and replace correctly by hand.

That's what I thought...
But it seems that I don't have nothing to lose...
I even have a third broken motherboard (also with a ripped lcd connector) where I can test the "removal" an "relocation" of the component. I know it's difficult, but there is too much to win and almost nothing to lose.
Any tech approach would be appreciated.

I tried to remove it with a heat gun.
It was VERY EASY and the removal was perfect!
Next I removed a good lcd connector from another phone (also without a problem) and that's where the problems began.
Soldering with a heat gun, which is not designed for precision work is like killing a bug with a bazooka... you will kill the bug but you will break something else...
End of story... ended with 2 non working motherboards and learned that I need a reworking station for this kind of work.

its easy I done them so many times without fail
MGA2009 said:
I tried to remove it with a heat gun.
It was VERY EASY and the removal was perfect!
Next I removed a good lcd connector from another phone (also without a problem) and that's where the problems began.
Soldering with a heat gun, which is not designed for precision work is like killing a bug with a bazooka... you will kill the bug but you will break something else...
End of story... ended with 2 non working motherboards and learned that I need a reworking station for this kind of work.
Click to expand...
Click to collapse
its easy and done it many times sorry you couldn't done it

Tips on how to replace the lcd connector on logic board
dan18 said:
its easy and done it many times sorry you couldn't done it
Click to expand...
Click to collapse
Sorry but can you assist some of us with the same problem in few short tips before I destroy my motherboard too

I might be wrong but is it just the clip that is broken? Do the contacts still connect? It might be possible to glue a thin strip of metal to the plastic ends of the motherboard's connector to hold the ribbon cable connector in place. Might work

[Q] Ideas to fix Broken Volume Key

In the process of trying to fix my loose hinge I must have broken my volume button. There is a tiny grey piece of plastic that gets pushed in. In the photo the volume button on the right is the up volume and works fine but down button doesn't have the grey piece.
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Does anybody have any ideas? I would be ok with replacing that whole little yellow switch if I have to. I have a pretty fine soldering iron tip.
help please!

If you're lucky, you might find a tact switch to replace the broken one in an electronics store or in a technical assistance for mobile phones, or you can try removing the tact switch and redo with some plastic, its not that hard to do.
Good luck.

echizen said:
If you're lucky, you might find a tact switch to replace the broken one in an electronics store or in a technical assistance for mobile phones, or you can try removing the tact switch and redo with some plastic, its not that hard to do.
Good luck.
Click to expand...
Click to collapse
Do you know of an online electronics shop that sells tact switches like this?
What do you mean by redoing with some plastic?
I have an old Palm Treo 650 that I'm going to tear apart and look for parts. I'm not at home right now but I found this picture and the buttons on the top left look very similar to the Desire Z ones.
Does anyone know if there are any electrical issues about the switch that I should consider before using a different one?

I was a cell tech for 5 years and replaces tons of volume and ptt switches. You can use a switch from any phone to replace it. Voltage doesn't matter on these and all seem to be the same size. You could probably buy a broken desire z or use one from any old phone. My old word of caution would be that some phones use ribbon (flex) wires that have a built-in switch that wouldn't be compatible for use. I know a ton of iden phones (older ones like i730/530/610) use the proper switches. Maybe a local sprint store might have some old water damged models that would be perfect. It would have to be a service center though. Good luck!
Oh and any non lead based solder will do but be sure you solder it down good. It make take a few tries and before to pull on the switch a little to make sure it was a secure burn...
Oh... lol! The treo switch will work fine as a replacement. Be sure to not burn off the the soldering pad on the board of your G2. And carefull with the removal of the treo's switch. They break easily...

Thanks so much sino8r!!!
I had an old samsung that uses the ribbon button you mention.
Now I just need to find my old Treo. I was letting my kids play with it and I thought it was sitting the the toy box. Now I have to rip apart my house looking for this thing. =)
Yeah I got non-lead based solder but I think I'll need to get a finer tip to my iron. I have the Hakko 936. Any tip recommendations?
Also, there looks to be 5 solder points on the Desire Z switch. Two on each side and on behind. The behind one isn't really shown in my picture. Do you know which solder points are the important ones and which ones are for strength?
I hope I can document my progress enough so that others with the same problem can fix their phones too!

sino8r, is this the phone you were talking about?

Why would you want to use lead free solder? Leaded solder has a lower melting point and flows much easier. I mean honestly, just use what you have on hand, but is there a reason why you would specify that he use lead free?

Repairing S pen

This is my first post here and I hope to make it a good one which someone somewhere will find useful.
Basicly I had my Note for just 1 day before the stylus started acting up, the screen would sense the stylus upto about 8mm away from the screen, very irritating! I actually found a video online about how to combat the problem by wrapping foil around the pen to block the signal, while this may work for some its very tempermental and doesnt allow the pen to work as its designed.
I dismantled my pen, mole grips adjusted correctly with some cloth on the jaws to stop any scratches and the end popped out easily enough, once thats out press the nib on a hard surface so the button raises and prise it out with a pin and then everything will just slide out from the back.
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once apart i was faced with these components plus a tiny mangled piece of rubber, i assume it was a o-ring between the magnet and the coil to stop them from touching, after some testing with the pen apart it was quite clear to me that I needed something to replace the o-ring.
First I pulled the coil off and found there is an o-ring under there, i glued the coil on with silicone gasket sealant to repace the o-ring so I could use it to replace the broken one, however this didnt go to plan as the o-ring wasnt thick enough, all wasnt lost as the silicone gasket sealant was doing a better job of mounting the coil than the o-ring was so I left it in place.
I began a quick search for something else to give some resistance yet still allow the magnet to touch the coil when the nib was pressed down, i tried many things but they all failed and made it very hard to get the screen to pickup the stylus, eventually I pulled some cotton from an ear bud only a very small amount is needed and make sure you don't squish it or roll it up, leave it fluffy and wide enough so it cant fall out of place, yet thin enough so the magnet can touch the coil when pressure is applied, experiment with different amounts I managed to get it perfect on my third try.
When the time comes to reassemble I decided to glue my magnet to the nib, partially because it made it a hell of alot easier to assemble but mostly because im sure the magnet fell out of position and this was what destroyed the o-ring in the first place, Id advise against using superglue to put the cap back on as it tends to dry when youve only pushed the cap half way down.
After you're done go an enjoy your working s pen again, as you can see I edited all the photos using my modded s pen without any hassle, i'll update the thread if it ever stops working again.
And yes the pressure sensitivity is still working!
What you do with your stylus is down to you, if you choose to follow my guide you accept all resposibility for anything that happens as a result.

Help identifying components on Nexus 6Pmain board

I'm wondering if anyone can identify the two components circled in red in the lower right corner of this image?
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I recently replaced the screen on my Nexus 6P, but these two component came loose (likely from when I took off the screen connector below them). One of them was lost as well.
After replacing the screen everything seems to work ok except that the Sim card is not detected. (The same sim works in other phones.) I'm suspecting that these two components are the issue. It's pretty likely that I would not be able to successfully replace them, but then again it might be worth trying.
Any thoughts? Thanks!

Your image link don't work..
But btw, why did you replace it? Broken?
I hear it's a very difficult and risky process to replace screens on 6P..
Sent from my Nexus 6P using Tapatalk

I just updated the image in the original post. I think it should show up now.
I dropped the phone from about two feet up and the touch screen quit working. Replacing the screen was a bit daunting, but actually seemed to go quite well until I figured out the sim was not recognized any more. It was a bit tough to pry off the camera shield on the back and to pry the insides from the body the first time. But now I can do it without too much trouble.
I think that the two parts I wan to identify might have been a bit damaged before (water damage?), and then I might have inadvertently helped them along.

balesse said:
I'm wondering if anyone can identify the two components circled in red in the lower right corner of this image?
I recently replaced the screen on my Nexus 6P, but these two component came loose (likely from when I took off the screen connector below them). One of them was lost as well.
After replacing the screen everything seems to work ok except that the Sim card is not detected. (The same sim works in other phones.) I'm suspecting that these two components are the issue. It's pretty likely that I would not be able to successfully replace them, but then again it might be worth trying.
Any thoughts? Thanks!
Click to expand...
Click to collapse
I can't see your image for some reason either on Tapatalk but I can in web view. Check ifixit for a full outlook of internal parts:
https://www.ifixit.com/Teardown/Nexus+6P+Teardown/51660
Edit: On second thought, the piece you're asking about wouldn't be discussed by them.
Sent from my Nexus 5X using Tapatalk

That's gonna be tough with no markings on the board or components. Google "identify smd components" might yield some helpful results. I think they are either smd resistors or fuses. As a last resort bridge the connections individually with solder or conductive glue. Check with multimeter after you bridge them to insure no resistance (good connection). Really looks more like those are components for the display circuit though.

normally those are some resistor smd.
you can check on other phones (service manuals) what kind of component is there.
i saw a service manual for lg g3 here on xda, you can check whatever you want but try to search for a component like that.

Help! One metal contact on mainboard gone! What exactly are inside the lower bumper?

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As shown in the photo, the second contact from the right on motherboard , next to the earphone port, now has come off (although it is OK in the pic). It should connect a metal contact in the lower bumper and act as some antenna. But what exactly?
I tried to cover the lower bumper with hands, which makes NO difference on LTE and 2G signal (but 2g looks like not very good itself). Neither 2.4 or 5 wifi . While 3G reception could be compromised, but not cut off.
At the moment, nothing obviously wrong has been noticed after the damage, but I am still very upset and would like to know what specific function or antenna that contact is responsible for. Best it was no big deal.
Thank you in advance.
By the way, disassemble it gently if necessary. Do not pinch it with fingers, otherwise we might end up on the same boat.

Check Android pay functionality as I believe that may be the contact points for your NFC antenna. Mine were bent and I had that issue until I was able to bend them back (was dicey).

jaysonic88 said:
Check Android pay functionality as I believe that may be the contact points for your NFC antenna. Mine were bent and I had that issue until I was able to bend them back (was dicey).
Click to expand...
Click to collapse
Thanks for the tips. Yet in my case the NFC has been working fine. So there might be other issues involved.

I'm not 100% sure which contact you're talking about, if you could circle it on the photo that might help. I know that some of the gold contacts on the back of the handset connect to the metal rear cover and are for RF and EMI shielding. Perhaps if it's one of these you won't notice a huge difference in functionality

MikusP said:
I'm not 100% sure which contact you're talking about, if you could circle it on the photo that might help. I know that some of the gold contacts on the back of the handset connect to the metal rear cover and are for RF and EMI shielding. Perhaps if it's one of these you won't notice a huge difference in functionality
Click to expand...
Click to collapse
Thank you
Just like this. Please check if you can see.
Yes, there are loads of contacts inside the back cover. But this one cant be discovered unless you dismantle the lower bumper by unscrewing.