[Q] hardware issue - Galaxy S 4 Q&A, Help & Troubleshooting

Hi I cracked my screen on my gt-9505 , as I have a spare phone that drops signal I decided to transfer the motherboard from the phone with the cracked screen to the phone which doesn't hold signal. from what I have read the receiver is on the motherboard so I thought all would be good. I still can't get signal on the old phone with the new board in it but can Still get signal on the phone with a cracked screen with the motherboard which was dropping signal. Have I missed something?. Is there a signal receiver somewhere else I need to also transfer. It's really got me stumped .

try to replace antenna
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Thanks for that, seems to have sorted it

Related

Broken touch panel, help?

So some things happened and my Nexus 7's touch screen got junked.
I've sent the device to ASUS support hoping they would fix it at reasonable price...
I was wrong. They want to charge me almost 75% of the damn price for an LCD change.
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This is 210 USD. Any leads on cheaper ways to fix the damn display?
Get a faulty unit from somewhere like Ebay/Craiglist, but make sure the fault aint the screen.
Then take the screen off the faulty one, and replace it onto yours?

[Q] Screen damage, help me!!!!

I have a problem with my nook simple touch with glowlight, in my screen I have an issue; it seem to be damage, the are parts of the wallpaper and an gray box in almost all of the screen, and in the bottom side of the screen is normal. What i can do?.
The touch works normal. The picture describe the problem.
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Sorry, it looks like your screen died.
If you can't get it repaired or swapped under warranty, take it apart and try reseating the display connector.
I don't really think that that's the problem, but it's worth a try.
Replacement screens on the market cost about what a discount Nook costs.

Nothing on display, after attempting to replace screen

My I9505 screen was broken, so I attempted to replace the screen. After doing so, I noticed that the pins (on motherboard) to which the display cable connects too looked to be damaged.
After everything was connected etc. I then turned my phone on. And although sound emerged and lights lit up, nothing appeared on the screen.
(I'm assuming the problem is with the pins described above)
A picture of the motherboard is below.
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Is there anything that can be done to repair the motherboard, so images will be displayed on the screen. Without paying for a new motherboard?
P.S I have tested the new replacement screen on another I9505 and it worked perfectly ( so the fault is definitely with my i9505's hardware)

Nexus 7 touch unresponsive

I have been using this device for more than 5 yrs. Recently screen rotation was not working so I tried to repair it by myself after watching some videos and forums. It was an easy process but due to my curiosity I dug into the hardware some more. During the process I mistakenly broke a piece from ZIF connector which was connected to the display. I don't know whether this could do anything to the touch. Now the touch becomes unresponsive. I am also thinking that the digitiser could be faulty but not ready to invest in a new one without knowing the real reason. Why this connector is for. Could this be the culprit? If so do I need to change the daughterboard? You can see the picture
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Identifying nearby GPS component on motherboard

Please could somebody help me identify the component marked 'R6214 E6' inside the red circle? The picture is taken from a spare motherboard I have. My daily tablet got run over the other day, screen smashed. So I swapped in a replacement screen and now everything works again apart from the GPS. Initially I thought that perhaps the antenna in the back case wasn't making a good connection to the motherboard, however I see nothing in logcat that indicates that the Broadcom BCM4751 GPS chip has identified itself upon boot. So I think that IC is not functioning correctly. I could buy another tablet for not a lot of money but I like a challenge.
Picture here...
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