This morning my Wallaby MDA1 T-Mobile dropped down to the floor from my jacket pocket. About 1 m. The screen stayed black when trying to switch it on. No led lit.
Put it in the cradle. No led.
Took it with me in my car and laid it beside me on the co-driver's seat.
After 5 min. of driving it suddenly blipped and the screen got lit with the
T-Mobile banner like after a soft reset. It started and stayed on. After a couple of seconds
the red alert box popped up saying the power was low etc.
I switched it off. So, I thought, is it alive again? Having arrived in the office, I immediately put it in the cradle there. No sign of live. Like dead again.
What could that be?
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maybe damaged batt or batt connector in the phone
Rudegar said:
maybe damaged batt or batt connector in the phone
Click to expand...
Click to collapse
Thanks for answering.
I found that there is a flakey contact somewhere near the Sim-card slot.
What is actually this half-cylinder shaped little bolt that can turn having this red dot on the flat face?
Edit: Found the answer: that is the vibro alarm (motor).
--
Christoph
Found it. The Sim-in-place switch (the one that is actuated when the soft cover is closed) has gone loose from the PCB. I'm glueing it to the PCB surface and will solder the interrupted copper trace.
--
Christoph
Krischu said:
Found it. The Sim-in-place switch (the one that is actuated when the soft cover is closed) has gone loose from the PCB. I'm glueing it to the PCB surface and will solder the interrupted copper trace.
--
Christoph
Click to expand...
Click to collapse
Actually, though I found a broken contact (switch peeled off the PCB), after repair and othe switch being obviously functional again, the screen stays black and the charge led also doesn't get lit.
I bought another XDA-1.
Related
So, being clumsy, I left my Streak in my hoodie pocket. Well, we can all see where this would end badly once I bent down to pick something up. I did, dropped my phone and cracked the screen.
I quickly went and bought a replacement glass + lcd display, and replaced the unit. But, upon turning the phone on, I noticed if I hit it a little too hard on one corner, It would restart, and the vibrator motor had ceased to work.
So I figured, hey, I'll just rebuild it again. So I took it apart. Looked through everything, took my time in putting it back together, because maybe everything wasn't fitting snug.
Now, When I turn it on, every thing is on, buttons light up, and the screen is lit up, but it is black. I never even get to the Dell logo. After about a minute the buttons dim, as if in idle. So i believe the phone still works, but maybe the connections on the MoBo is faulty? Any help would be nice, thanks.
check to see if the ribbons are snugged in place.
mofoahh said:
check to see if the ribbons are snugged in place.
Click to expand...
Click to collapse
I agree take it apart and chech your work. I had problens with my camera and flash. It was tge connector not being fully seated
Sent from my Dell Streak using XDA App
Well, I just took off the rear cover and reseated all 3 connections, pushed em in as smoothly and far as they would go. But, same thing. Black screen. But the LED is still working...
I'm having the very same problem. This is my second replacement screen and neither displays anything except black screen with backlight on, and the home + settings + back buttons remain lit. I can hear my phone starting up and receiving messages, but I cannot see anything. I've taken the phone apart and put back together five times between two replacement screens.
Does anyone know what ribbon cable might be at fault for this particular issue? The largest ribbon cable was shipped bent across the circuit board on both screens; there is a permanent creese in both ribbon cables, but I'm not certain this is causing the issue.
Any insight or assistance with this issue would be greatly appreciated!
A week ago, I dropped my Note 2 on the sidewalk and smashed the screen (the phone itself functioned, but the screen was blank)
I took it to a local, reputable repair shop for fixing, and received the phone today, with a working screen.
I realized upon arriving home that both the Wifi and Bluetooth functions will not turn on.
They both do the following:
They will be grayed out, then allow you to turn on after about six seconds
When I press to turn on, it sits in the "on" position for five seconds, then slides back to the "off" position
After perusing the forums, I have done the following to try and determine the problem.
1) Took the battery out to restart the phone
2) Factory reset and flashed back to stock (had been on Jelly Beans)
3) I opened up the casing to see if any hardware had been dislodged that I could see (not an expert eye, mind you...I consider myself more of a tinkerer (I have been kicking myself for shelling out the dough for the repairs when the screen replacement looks so fun...)
Attached is a pic of what I think I should be looking at, after watching a few disassembly videos: (red rectangles).
--Note that the other side of the casing (which has what looks like tape over what is the wifi antenna(?) is not damaged as far as I can tell.
Possible explanations? Was the antenna damaged when the phone fell (face down)? Was damage done during screen replacement?
Thanks for reading! And apologies that my first post, after lurking for a while now, is a "take" post rather than a "give" one!
update? did you fix it?
I have the same problem (not working Wi-Fi - Bluetooth)
One morning I woke up and the bottom half of my Samsung galaxy avant (SM-G386T) had a grid of white lines going across it. First time I restarted my phone it went away.
But they keep coming back and now it's more permanent, Sometimes it goes away briefly but they come back. I tried factory resetting. That worked the first time for a few hours but then it came back. and I tried it again and 2nd time there white lines where there during the factory reset.
The lines even show when I turn the phone off and charge the phone. So I believe this means it is w hardware issue
I tried taking the back planel of the phone off. I disconnected and reconnected the lcd connector latch on the left side. But the problem still persists. I haven't pulled up the screen with a suction cup. So Idk if there is a cable that could be loose on the front end or not. But Idk want to go buy suctions cup if I dont need to you.
Should note that I do have a good sturdy rubber case on my phone. but it has hit the floor a few good times.
One other thing that seems to aggravate or sometimes even make the lines go away is putting my phone to sleep and waking it up repeatedly or adjusting my brightness to max.
What do you guys think? is this fixable or do I need to replace the lcd screen.
man its simple
just press the wires of display which are providing it power & ur problem will be gone.
Its due to lack of sufficient current to display!!
Rustamveer said:
man its simple
just press the wires of display which are providing it power & ur problem will be gone.
Its due to lack of sufficient current to display!!
Click to expand...
Click to collapse
What wires are you speaking of exactly. cause like I said I have taken the back off and disconnected and reconnected the LCD flex cable but nothing changed. Are there wires behind the LCD I need to get to? which means I need to removed the screen with a suction cup?
Backstory: It's been 2 years when I had water damaged my phone. The whole device was completely filled with water. The
phone went dead. I shook most of the water off via micro usb and sim card slot. That's when I realised both of my camera
lens were fogged inside, I tried to open up the glass back of the phone (to remove the battery and dry them up).
Unfortunately, the glass back was shattered but still mostly in place as it was glued tightly. I have no choice but to ditch
my phone and kept it in my desk. After years of ignorance, I finally went back to check out to find out that the lens are dry
(all of the water might as well have been evaporated. I charged it. Surprisingly, the notification light lit in red. After charging
it for 2 hours, I decided to power on the phone.
Issue : The display seemed dead, but I managed to take a few screenshots using -vol + power button. Just by listening to the sound of the
screenshots I took, I don't know if my phone is considered to be fully functioning (minus the LCD screen).
Can someone please tell me if my phone is still working fine as it can emit sound because I'm considering replacing the LCD screen
Put your phone in a rice tub with all the flaps opened and let it wait there for 1-2 days, the water should be gone completely.
iXaidyiu said:
Put your phone in a rice tub with all the flaps opened and let it wait there for 1-2 days, the water should be gone completely.
Click to expand...
Click to collapse
Alright, I will try my best to make it dry. Also, thanks for the quick reply mate! :good::laugh:
Hi.
My z4 lte has recently started shutting down without warning after displaying the flat battery icon. This happens even if the battery has over 80% charge. The tablet reboots normally if left for a few minutes and on restart will show the same battery level as before the shut down. This is happening more and more frequently.
Any ideas or suggestions?
Thanks.
thintin said:
My z4 lte has recently started shutting down without warning after displaying the flat battery icon. This happens even if the battery has over 80% charge.
Click to expand...
Click to collapse
This is definitely a defect battery. Have the same problem on my tablet Z4 and before already twice on Xperia Z1compact. The phone battery was replaced the second time now. With new battery no problems anymore. (seems to last arround 2 year, then it starts again. Looks like poor battery management by Sony )
Only solution: replace battery!
Sadly the only way is by disassembling the display:
https://de.ifixit.com/Anleitung/Sony+Xperia+Z4+Tablet+Repairability+Assessment/79131
Did anyone managed this successfully without breaking the screen? I replaced a broken screen on my Tablet Z and its true, they are really delicate and new screen is ~250 Euro! (Battery ~50 Euro incl. glue).
(By the way: the Tablet Z battery is still fine, and even if, it would be accessible through back cover. Was really the best tablet by Sony. @Sony: WHERE IS THE SUCCESSOR of TABLET Z4??? How about skipping at least once this useless "every 6 month a worse phone" cylce (XZ2: :crying: :silly: ) and develop instead a new tablet!? )
allofmex said:
Did anyone managed this successfully without breaking the screen?
Click to expand...
Click to collapse
Since my battery became almost unusable, I took the risk to replace battery myself.
And it was successfull!
Here some hints:
First of all: Make sure you have good tools, mainly:
Only use a very thin and a bit flexible opening tool (I used iPlastix tool, the plastic version)
Use a good heatgun with small opening adapter (< 1cm). Make sure the heatgun can be set to low temperatures, I strongly suggest one that can be set to exact values (In my case "Steinel HL 2020E", can be configured from 80 degree upwards in 10 degree steps)
Build yourself some kind of stand for your heatgun that you can heat the display while having both hands free (I used a small camera tripod and tape)
If you do not have ordered the new adhesive yet, use a internet photo of it to see where the adhesive is located and how deep it reaches. (the edge where adhesive does not reaches edge is headphone jack). Choose a spot with thin adhesive (not an edge) to start.
Heat up this spot (in my case: heatgun on 90 degree celsius, 5 cm distance from outlet to surface) and while still heating, carefully insert opening tool. Do not use force, heat longer if needed. Than slowly move around the tab by heating and dragging your tool. (here the mentioned stand for heatgun helps a lot). After you opened some way, insert a thin piece of platic to prevent adhesive from reattaching.
Again: NO FORCE. When old adhesive is warm enough, you can easily "cut" it with your tool. If you still feel resistance, you need to heat more. (on spots with larger adhesive areas I switched to 100 degree). When you are around, the display should be able to lift, if not, heat again remaining spots and use opening tool until screen can easily be detached. (never bend/pull) There is not adhesive in middle of display, only at corners as you see on new adhesive.
The opening itself was surprisingly easy. More annoying was to remove the old adhesive remainings. I tried isopropylalkohol, but it did not help much. Most of it was removed with some plastic blade, mooving/scratching/pusching permanently against the end of the adhesive trail. It takes time, but it removes it in 0.1 mm steps (maybe someone has a better idea).
Make sure that you work on good mat/base that you can put force without bending screen. I had some sticky but flat remainings on display surface, but this should not be problem.
Removing battery adhesive: use colored edge of pull tab ONLY to grab it. As soon as the white part gets visible drag always on the part that is just coming out behind battery. The first tab teared for me because I did it wrong and it was difficult to remove the remaining. The second tab could be removed completely with ease. (How to detach the cabling, see the youtube teardown videos)
At this step I suggest to replace the main camera lense if the lense coating is broken (as usually on Sony ). Do not remove lense from inside, only the round part gets replaced. Heat up lense and push from inside outwards! (see attached photo)
Replace pull tabs and battery, reconnect cable and TEST tablet before attaching new adhesive! (you may use sony test menu by calling *#*#7378423#*#* in phone app)
Another tricky part is to apply the new adhesive. You have only one chance, as soon as the adhessive touches a surface it sticks, if you try to detach it again it will stretch and stay stretched, so better don't try. Seems the adhesive has to be applied to display first, so detach cable of display, test carefully how to hold and handle before removing plastic covers of adhesive and then: good luck... (Result was "almost" ok in my case. If result is tolerate able, keep it that way. Trying to change again will just worsen the result. Cut parts sticking out display edges)
Reconnect remaining display cable, test functionality again and glue the other side.
Congratulations, you got 2-3 years more of tablet lifetime. Lets hope the guys at Sony get it done to bring a successor until then...
I succeded open my tablet and replace battery.
Now it does not power up.
The red led is lighten up, blinking 4 times, ligten up again and the went off. Repeating again and again after some while.........
I cannot get in touch with the tablet again. I cannot see anything broken or destroyed by open it.
Is the led an error code?
Is there any reset button hidden somewhere?
Sorry to hear ?
Did you tried hard reset? (Press Volume up + Power for more than five seconds)
What happens if you boot to FastBoot, does USB connection shows up on computer at least?
Is device charging?
Is screen backlight starting? (Try in dark room, you should see at least a little lightning if backlight switches on)