Hi,
I changed the battery and now mi Mi9T doesn't want to switch on !
Just vibration, and I post you the screenshot of the device manager when I plug it.
The USB debug was authorized, and the phone is rooted, if it can be used.
Thanks a lot, I really wouldn't lose my data !
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I forgot : I made cross tests with another Mi9T, motherboards have been changed, and my screen and battery are ok with the other motherboard.
Then the problem is on my motherboard.
Nobody knows ?
You probably damaged motherboard during change or shorted it. It's not possbile to tell what you did exactly through forum
So, I changed the motherboard by new, 3 switches on ok, then same problem at final remounting : vibration and black screen !
Then 2 options I think :
- I make a shorting at remount, but I don't know how, and I broke the 2 motherboards
- Something happens and put the phone in alternative mode, and I don't know how and how exit
Or your screen flex has bend pin. Check for damage at connections
I have already replaced the screen flex cable, it fixes nothing unfortunatly.
I tried with usb-c hub and a hdmi link to the tv, the hub activity light is on but no signal on tv.
It means the phone switch on correctly but the video signal can't run to the phone screen or the tv screen.
Change motherboard, it looks like something is damaged that controls screen. It will be hard to diagnose
Aliexpress accepted the motherboard almost full refund without return.
I'd want to re-order a new one, but the same issue could be happen and I can't know when and how !!
Related
My less than 4 month old unit experienced the white screen syndrome (blank white screen with some occasional orange lines)
the unit has been opened by a technician and he is pointing the problem to FLEX cable but they dont have much experience repairing HTCs, only NOKIAs.
Biggest problem is the flex cable cost like US$100-150 on ebay now.. after reading thru XDA-Devs, i noticed some indication of LCD problems..
can anyone give me insight if this is more of a LCD problem or FLEX problem.. some symtoms includes:
GREEN ON light on top is active, but CALL D Pad and HANG UP buttons are not lighting up and fuctioning.. the unit still starts Windows Mobile and still beeps and buzzs without any problems..
Heres the photo of the unit.. Any insights would be greatly appreciated.. thanks!
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There are existing threads on this, here for example:
http://forum.xda-developers.com/showthread.php?t=303872
Very briefly on this complex issue:
1
Not likely to be the LCD
2
Could be the flex cable between screen and D-Pad
3
Can be the actual connector not seated well at the D-Pad. It has two screws (tiny) and MUST be seated absolutely flat and must be neither loose nor over tightened.
4
It can also be components on the D/Pad board that are faulty
5
Recent reports also suggest that in some cases it may be faulty capacitors on M/Board.
So NOT an easy one to track down.
Closing this thread as threads exist - but don't expect a definitive answer - some suggestions here and there MIGHT work for you.
Mike
Hi guys. Need help here. My ipaq won't charge even with te original usb cable.
It seems that the usb port is damaged - it charges only when i put a piece of paper in the mini usb connector so the pins of the connector are pressed against the ones on the usb port on the device. I guess they use too soft pins and they got deformed. Can anyone help me fix that. My device has no warranty.
I don't know if it is easy to change but this is what you have to buy :
http://www.repairhppda.com/product_info.php?pName=connector-for-synccharging-problems-for-610-612-614&cName=select-your-ipaq-model-ipaq-600-series
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Yep. That's the part. I found it later after I wrote the post. I guess I'll have to make a paypal account after all. Thank you thouugh. In the local service center they said they will fix it fo 15USD but I have to provide the spare part.
Any idea why this part has broken down? Is it possible to fix it without repacing it?
it sounds like either the small clip inside the USB port has snaped, or bent.
If its snapped, then theres very little holding it on so best to get it replaced
If its bent, then it may be possible for you to bend it the other way so it makes a stronger contact tot he USB plug. It will still be weaker than originally.
I have the exact same problem. The weird thing is that it still syncs and I can use WM5torage. I got around it by buying a cheap extra battery + external battery charger combo.
A'ight, so i opened my good old' Prophet today.
I am 50% sure that the battery thing thangy on the motherboard (see pic) is broken.
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However, it might also be the battery, i have two batteries, one is the one that came with the Prophet and one is a cheap battery i ordered from Dealextreme.
I do know that the cheap battery is dead, but the other one (I did some testing with it, it shows up at 1.4V at my multimeter) i'm not sure if it is dead.
The phone has been like this before:
It randomly worked, randomly turned off, it wouldn't work for like 10 days, then when i put the battery in again it worked.
It kept doing that until it died completely.
Any suggestions?
I can't understand on photo. A battery pin is broken? If the problem is broken pin, a watchseller or jeweler can fix it. They have the right equipment to work with small things
zephyri-xr said:
I can't understand on photo. A battery pin is broken? If the problem is broken pin, a watchseller or jeweler can fix it. They have the right equipment to work with small things
Click to expand...
Click to collapse
You think they will fix this?
I would try to get a new (third) cheap battery.
Or try to re-animate the cheap one (dangerous, forbidden, but works often for me: open battery casing, unsolder LiIon-Cell, reload with Lab power supply to around 3-3.8 V (never > 4.2V!!!!), resolder, put in Prophete, start charging....)
The pins look ok. 1.4V for LiIon is below the deadly shutdown value!
TS
OK, maybe my answer is a bit late...
So my power connector has a problem. I can't get it to reliably connect. Just a little jostling causes it to loose connection. If this happens while I sleep, the power drains completely and my alarm doesn't go off.
Any idea how to fix this?
I'm pretty sure the issue is not with my wires because I've tried several - and tried the wires on several devices and they work fine.
synpax said:
So my power connector has a problem. I can't get it to reliably connect. Just a little jostling causes it to loose connection. If this happens while I sleep, the power drains completely and my alarm doesn't go off.
Any idea how to fix this?
I'm pretty sure the issue is not with my wires because I've tried several - and tried the wires on several devices and they work fine.
Click to expand...
Click to collapse
It's the piece of (excuse my French)..........sh*t USB port on the phone. Mine has come loose too. Just got my warranty replacement and it freezes and the colors are off (like the whites are actually a light yellow.....wasn't like that on my old phone)
very true, you can attempt to clean out the usb port on your phone in hopes this will fix your issue. otherwise get ready to spend $5-10 on ebay and pick up a new port, of course you will have to solder this in so yeah, its a fun job
Mine has been this way since the day I got it. I actually just bought some Samsung micro-USB cables off Amazon that have a solid fit inside the phone, wonderful cables! Can't beat the price of them either.
http://www.amazon.com/dp/B001XXUOQI/ref=pe_175190_21431760_cs_sce_3p_dp_1
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hey guys,
i have the wiredest problem.
i've phurched a new galaxy s5 and when i connect it to the charger, a charging icon appears but the battery % dosent go up, only down.
i've downloaded many battery analysing app and theey all seem to think that everything is fine, that the current flows and all, but the % dosent go up!
i switched a battery and a cable and its definitly a phone problem (i can charge the battery in another phone)
some suggested that i sould replace the charging port but it looks completly new and fine, and also cost quite a lot of money to replace.
is there any other soultion?
thanks!!
Sorry I encountered the same problem on my old s3. I finnaly solved the probleme by changing the micro hdmi port. Sorry I know you won't here this but i search everything. I replace myself it's not so hard. I do it because my s3 was in ending life.
It does sound like the charger port.....
The replacement parts aren't that expensive (under £10 off eBay).
Just make sure you get the right one....
Look at the pictures......
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These parts are device variant specific......
It would probably be a good idea to match 'rev' versions too.....that was certainly the case with the S2....If the wrong rev version board was put in, it led to signal problems etc......
http://i.imgur.com/rVnFwJM.jpg