After dropping my hd7 and being told by my insurance that it was my fault I managed to get it working again however I can't get any signal. Does anyone know where it connects to the phone so I can try and get it working again. Thanks in advance for any help
most antennas are located in the bottom third of the phone.
If you open the back cover in the bottom,
you will see the antenna connector behind the back cover.
Yesterday i dropped my device from one feet. It turned off and i turned it on.
Now lower part of screen and capacitative buttons dont work. i will attach a image(non-working area outlined in red)
My warranty has expired so i cant exchange it for a new one. What should i do? Can i fix it by myself?
Please help me
Fycola123 said:
Yesterday i dropped my device from one feet. It turned off and i turned it on.
Now lower part of screen and capacitative buttons dont work. i will attach a image(non-working area outlined in red)
My warranty has expired so i cant exchange it for a new one. What should i do? Can i fix it by myself?
Please help me
Click to expand...
Click to collapse
Hi,
Only thing I can think of is that somehow it has damaged the cable from the touchscreen or the tiny wires that feed into the cable without damaging the screen. I came across a brand new screen I was replacing once for someone that had a similar problem where the bottom left hand corner wouldn't respond to touch unless there was firm pressure on the screen to create contact, and this was a brand new screen. It could also be that the touchscreen connector needs to be pushed back onto the board if it's come a bit loose.
If this is the problem, you can fix it by yourself although I'd have a good look around youtube, there are heaps of DIY videos of how to replace screens. If you do go down this path I recommend you replace the touchscreen/LCD/LCD frame in one go, as it's generally already pre- assembled the only thing here is that there are 3 brands of LCD's HTC used with the phone and they aren't all compatible, and you can only tell by pulling down your phone and looking at the LCD flex cable colours, and the other thing is that the screens that are available aren't always the same quality as the original. If this sounds to hard your best bet is to take it somewhere and diagnose the problem just in case it's something else
Hi
Sorry for my english, I'm hungarian, this is the best I can do.
So I bought a cheap (but not too cheap) SM-P905, but I can't get the screen to work properly.
The touch layer, the spen, the backlight works well, I managed to mirror the screen on my pc and everything else seems to be okay.
I got off the back cover, I tried to unplug and reattach every flex cable, even the battery. I tried to look everything under magnifying glass to see what could be the problem.
The lcd flex connector looks like this under my lens.
(Upload it in the next post, not working from the android app)
I tried to clean it with a needle, but it still looks like it is corroded or melted.
Is it possible that replacing this connector will get the screen back to normal? (I found flex connector replacement on the internet)
Or is it possible to repair it with some jumpers or something like this?
Is it melted because of some shorted circuit somewhere else, or because of a bad micro capacitor?
How and where can I locate and resolve this problem (s)? Maybe is it still the lcd that is simply dead and I can't bring it back to life?
I dont want to buy a screen, and a motherboard (neither only one of them )
Thank you for your help!
Okay the forum doesnt let me to insert links or photos, because I'm new here -.-
/s/53oab9sykbihn32/20151021_175009.jpg?dl=0 write dropbox dot com in front of link
https://www.dropbox.com/s/53oab9sykbihn32/20151021_175009.jpg?dl=0
In my opinion it died!!
I hoped for better opinions
I wanted to know how this thing can die?
It has to be caused by something.
Bad resistor/capacitor? Is it on the motherboard or on the lcd's circuitboard?? Or is it only the corroded flex connector??
I dont want to throw the whole tablet in the trash. Everything else is just operating fine.
If nobody can answer this, where should I write, where people can help with these very small components / resoldering / measuring what gone wrong here?
Alan-B said:
In my opinion it died!!
Click to expand...
Click to collapse
So today I measured the pins in worst condition. There are 2 pins that I tought can cause the problem and looks corroded. (Number 5 and 9 from the right) Both of them !are not used!. (There is a total of 3 pins that are not used on the connector/cable)
They are not lead through the flex cable, they have no function here.
So the problem comes from somewhere else, but I still don't know why they look like this.
Maybe I will try to seperate the screen from the body and look at it closer and its connectors/smaller circuit boards.
Sent from my SM-N9005 using XDA Free mobile app
Hmm, that pic does not make me think its a corrosion problem. At best, it can lead to a finicky connection, but there seems to be enough there for proper electrical contact. If this were a headphone jack, for example, I would say apply pressure near the cable to see if the headset works properly, and if it does, then I know its a cable problem. No idea if you can try to apply pressure to the cable and see if the LCD turns on.
If the screen mirrors on the TV successfully, then there are a bunch of Samsung Service Codes you can use to test the LCD. Unfortunately I do not know them for this model, but google should get you the service menu very easily. There is definitely a test in there for the LCD that should give you a better idea what to expect.
If the cable is pretty cheap, I would also just pick up one and try replacing. Nothing to lose! AND if you have access to another identical device, you can try to stick this LCD on that device to see if its the LCD thats the problem or the motherboard.
Lastly, I would want to know if the glass on that LCD has ever been replaced. If they did a glass only replacement, its possible they overheated the LCD ... OR used too much LOCA glue that shorted the connectors.
Many possibilities, so I wouldn't call it a day yet. First, look for the service menu, thats the best place to begin.
I will try the service codes.
Unfortunately I don't have more devices. The easiest way would be to test the identical parts on a working one, but I don't know anyone who would risk his/her tablet for this
The other thing I can do is to get another lcd-glass unit from ebay or from ifixit and try it. If the problem was the lcd, it should work, I'm happy, but if its black, I will have (maybe) 2 working lcd units for sale. Or I have to get a new motherboard (sounds expansive).
I don't think that they replaced the glass on this device, it looks very used and scratchy, so it was working before.
Thank you for taking your time for me and answering my dumb questions!!
Sent from my SM-N9005 using XDA Free mobile app
There are more good news than bad, so I'm very happy.
So 1-2 days ago I started to get off the screen to see if I can seperate the LCD from the receiver. Turned out its not that hard. The only hard thing is to get it off the body in one piece. Lots of heating with a hair drier, and a LOT OF PATIENCE. If you can get it off in one piece you are on your way.
Seperating the glass from the LCD is very easy, did it in 10 minutes, I don't think it needs heating...
So I did it, then I saw some water damage (white things) on the back side of the LCD. There is a small board here too, so I cleaned the white thing off with some alcohol.
Then I put the lcd back and voilá, Its WORKING!!!
The only problem is that I damaged the touch screen glass, so I need to order a new one, but its under 20$ so no problem.
Thank you all for your help, I hope that I finished here
Sent from my SM-N9005 using XDA Free mobile app
Good to know! Thank you for the update
Other solution is remove battery five minute and reconnect battery
Hi I have a ZE551ML and it is in a pretty sturdy case. The other day it took a fall and since It is unable to charge and the sim/sd card slots don't work. After watching a few teardowns I am guessing the fall knocked one of the connectors loose (since the one connector in question would support all of what has stopped working). I set up an RMA but am afraid to send it in because it has 9% battery left and I have a ton of pictures that I would like to get off and all of my accounts are synced and I am not sure I would be able to unsync them in time and do a full restore.
Does anyone have experience with ASUS RMA and how they handle data recovery or will the just blast the phone when they get it? Also is it worth biting the bullet and popping it open to see if that connector is indeed loose?
The phone is in pristine shape thanks to the case and still in warranty. I am afraid to break the warranty screw just to see if it is just a conector.
Any help is appreciated.
I've used their rma and they'll either flash your phone and repair or they'll replace it. I suggest you take it to a good repair shop and you'll be ok. Next time use Google Photos and it'll automatically sync to Drive every day if you want.
Hi guys, i have an issue...my phone dropped in water...everything is working fine (i swapped components with another phone) but not the charging part...battery is good...
disassembled the phone, in the pcb under the metallic plate there is a burned component...i have a friend that can replace it but i need the schematics of the motherboard to choose the right component (voltage, power ...)...i can't find online a schematic of the motherboard, can you guys help me ?
the problem is that phone won't charge, it gets power (with tester i can see it) but phone olny turns on for a second and then shutdown...i think the component is a power regulator or something like that
ps. sorry for bad english
Since you dropped it into water it's big chance that much more parts are screewed. I suggest you to disassemble phone and look to motherboard an electric parts are they rusty, rust will be white color if there is a lot of that than you shouldn't fix that part because a lot of stuff is broken or will break soon. You can try placing phone in supersonic bathtub but that won't help for long time in most cases. If your friend can replace part than he should know how to find that part if he have knoweledge in that area.
don't worry, the other parts work good...i swapped all parts (lcd, speaker, touch and more) with another motherboard and everything working fine...after i dropped in the water i cleaned the phone without turning on from everything...the only damaged part is that chip (burned) under the metallic plate...the rest is clean as new and working...if i can identify that chip (o what the hell is it) a friend of mine can replace it
Well, I doubt you will find scheme anywhere online. What you can do is to post picture of that part which is broken/burned and post picture to some forum for electronics maybe someone will recognize it.
Hey, is this (https://goo.gl/qMGcmV) what you're looking for?
i don't have the phone right now, i asked my friend for a picture but still no answer
thank you but no...i'm looking for the schematics of the motherboard...i'm putting a picture of the damaged component