Backlight works but display doesn't - Moto 360

Hi all,
I just upgraded the battery on my Moto 360 v1 and everything was working (including the display assembly) when I connected everything - except the side button. I opened it up, thinking there was something in the way of the button mechanism, and tried pressing the button mechanism manually. It wouldn't turn on, so I disconnected the battery for ~20 minutes. After that time I put it back together and lo and behold, it vibrated! But the screen stayed black. I put it on the charger and the screen still stayed black - but I noticed the backlight was working. Even the digitizer is working. I opened it up again and everything looks fine. The pins on the ribbon cables all seem fine, no dust/moisture. The ribbon cables themselves also seem fine.
I've already tried factory resetting via the Wear OS app, but that hasn't changed anything.
Any ideas would be appreciated!

Tiny update:
After tinkering around with things, I managed to get some pixels on the screen. So chances are good I damaged the ribbon cable. I'll update if I get it sorted.

Did you get it working?
The ribbon cables are exceptionally easy to tear when working on the watch (I managed to do this *twice* even though I knew I needed to be careful), in which case you must get a replacement display assembly from aliexpress. But it may also just be that the display connector is not fully engaged.

Related

Phone doesn't turn on (LED does show)

Okay, so this isn't one of those "I bricked my phone" situations. I have had the same ROM over a few months without problems.
It started when I dropped my phone while traveling by train.
At first it were the volume keys, WiFI and Bluetooth (those exact 3) that malfunctioned (didn't turn on or react at all).
I thought, this is a software problem so I ran a RUU for my phone. Installed fine, booted up but still the same problem.
Then I thought, perhaps something's wrong with the connectors so I removed the screws to check them all.
All were right, so I screwed it back together but this time the power button did do simply nothing at all.
So, the problem is plain and simple: Phone doesn't turn on.
When I put it in my charger, the LED begins to burn like it should.
While charging and I hole the on/off button for about 3 seconds I hear the "TUDUM" sound in Windows indicating a device has been connected.
The only device found in device manager is a new E: drive which would be my SD card when mounted (although it always shows up under device manager even when not mounted).
What could be the cause of the problem? I'm sure it's just a connector somewhere and am willing to fully disassemble my phone if needed. I got all screwdrivers and backup screws + wiring so I'm not afraid to lose anything.
Please help
Badass
I'm such a badass lol, I fixed it!
Here's how:
I removed the full back part of the device (remove the plastic cover, unscrew the screws, disconnect the white and black wire (wifi and bluetooth if not mistaken) and all the nasty tape and I removed the black tape from the battery cover (the part the battery is laying on).
I removed all dust and made sure nothing shorted. I glued the black tape at the battery side back on it, threw away the tape from the bottom and just screw it back together.
Works again! Wifi works, bluetooth works, volume buttons work. EVERYTHING WORKS

Screen is "black"

Hello!
I hope somebody can help me, I tried to solve the problem by myself but I ran out of ideas what could be wrong. So to start with, i have replaced a cracked screen with a new one(lcd+digitizer). Everything was working fine after assembly, so I gave the phone back to the customer. Yesterday after 3 weeks of usage, he came back claiming that the screen isn't working anymore and that sometimes the screen was black and the other second was working. So I gave a look, but the screen was working(suddenly again), only the colours were a bit funky(probably the screen flat cable is the problem or?) So I opened the phone but nothing was wrong with the cables. I also cleaned the connectors with air if there was maybe some dust. Then when I assembled it back, plugged it in, to charge it, the battery was on screen,saying it is charging and I thought the problem is solved, but when I turn on the phone there is still nothing,blank screen. What could be wrong? The screen must be working because otherwise I couldn't see the green battery when charging the phone while off.

[Q] Screen not lighting up after screen replacement.

I replaced my HTC One X screen because it's cracked. I am pretty sure I did everything correctly.
I followed this video:
https://www.youtube.com/watch?v=f3wxy4wUlRw&list=PLv54VHJgYuodvmY7ySEUEjOZcbptZtmG7&index=4
I tested the new screen out mid-way, like the video, and it worked fine (I'm using the SHARP variant, as it was identical to the cracked one).
I then placed the screen into the housing, and connected everything back up. Put the screws back in, but before putting the back cover on, I tried testing the screen. It wouldn't turn on. The capacitative buttons light up on reboot, but the screen does not. When plugging it in, the notification LED lights up a constant orange, and it comes up on my computer.
I've read some people having this problem, but I'm not sure what to do.
I took the screen out, and put the old one in (the cracked), and it too no longer lit up! Same problem as the new screen. So how do I fix this? The Flex cable is 100% in the jawbone connector, so it's not that. I don't think it's a short circuit, although it is a possibility.
I spent $90 on this, so it's quite disappointing if it's all gone to waste.
UPDATE:
I found out that the screen is working, it's just extremely, extremely dim. It's so dim that I needed complete darkness in my room in order to see the screen. I only glimpsed this once, and I haven't yet been able to get it to turn on again.
What's strange is that the screen doesn't even light up when powering on, there's no HTC boot animation or anything. Is this a hardware, or software issue?
I'm going to fully charge it, and take the battery out for 3-4 hours, and see if it fixes it.
I think it might be a shorted 220 coil, that's the only explanation I can think of to cause both screens to not light up.
Does anyone have any experience replacing the 220 coil? As I'm not sure how to remove the 220 coil. Do I just pry it off?

[Q] Power button ribbon issue

Hi, I'm wondering if any electronics expert can help me with this. I dropped my htc m8 and the screen shattered. I decided to replace the screen my self using YouTube videos as a guide. I replaced the screen, connected everything, and powered it on and it worked flawlessly.
When I tried to fit the phone back into the silver case, I did not fit properly so I removed it. I tried powering the phone but it didn't power up. After a bit of wiggling with the top power ribbon, I managed to power it up. But the button is not stable, ie sometimes it works and sometimes it does not. Is it an issue of a bent cable? If there is a solution that does not involve buying a new board I will appreciate it.

[Urgent Help Needed] Phone not booting after opening the motherboard

Hi,
I have been following guide by wit rigs to replace my rear camera due to focus issue. I had ordered correct tools from their website and started following the steps.
https://www.youtube.com/watch?v=k76StG0DaZ0
1. opened the phone's back, removed screws, opened motherbaord, replaced camera, put back motherboard and connected it all.
After all those steps, I booted the phone to check the camera. It worker perfectly fine with proper focus. Now, I put few screws on.
I thought I will try again and verify before I put back the back and close everything. But to my shock, phone is not booting when pressed power key.
I checked all connection 2-3 times and tried again. Thinking that some of the battery related connection may be not done properly. But still no luck.
Any pointers/suggestions?
Thanks a ton in advance.
by the way, I started with 75% battery. Not sure if that is the issue but is it advised to connect charger while back is open and see if charging light comes on?
Potential short? Also look for loose connections/maybe some connections became unplugged.
Check the battery connection (motherboard to battery)
mit2nil said:
Hi,
I have been following guide by wit rigs to replace my rear camera due to focus issue. I had ordered correct tools from their website and started following the steps.
https://www.youtube.com/watch?v=k76StG0DaZ0
1. opened the phone's back, removed screws, opened motherbaord, replaced camera, put back motherboard and connected it all.
After all those steps, I booted the phone to check the camera. It worker perfectly fine with proper focus. Now, I put few screws on.
I thought I will try again and verify before I put back the back and close everything. But to my shock, phone is not booting when pressed power key.
I checked all connection 2-3 times and tried again. Thinking that some of the battery related connection may be not done properly. But still no luck.
Any pointers/suggestions?
Thanks a ton in advance.
Click to expand...
Click to collapse
Check whether the connection of battery is connected properly or not as it a switch like pin press it until a small sound appears....
Check out the breakdown video of JerryrigEverything's oneplus 3 breeakdown https://www.youtube.com/watch?v=Hh_XgrcQ9oo
Thanks everyone for the help. I tried doing assembly multiple times and nothing helped. I also checked power and battery connection. Nothing worked.
Finally, I lost the hope and decided to assemble everything back and give it to customer care. So I did just that. Assembled back everything and put the phone aside.
After assembling I reconnected charger to see if charging is working. To my pleasant surprise, charging animation came up and then reboot also went fine.
Now, I don't know whether issue was resolved due to last assembly or due to connecting the charger. But my phone is working fine now. I checked all hardware components and everything is working fine. My new camera is working perfectly as well.
Marry Christmas I guess
Nilay
It didn't work before, because the power flex connects to the mobo via pins, so it has to be pushed down and be in the right place, so each pin connects to the right plate.

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