Hello friends
Here is a circuit diagram for Huawei the Chargar IC to exchange
Can someone tell me what a chargar i need
On Chargar IC stands ADT
Thank you
Huawei786 said:
Hello friends
Here is a circuit diagram for Huawei the Chargar IC to exchange
Can someone tell me what a chargar i need
On Chargar IC stands ADT
Thank you
Click to expand...
Click to collapse
I don't know what you mean by "chargar" and what you say there, but the title of this thread is "short circuit" and no longer charged, but if it's true "no longer charged" and it doesn't charge, that means 2 things;
1. Full Motherboard is fried (if the phone still powers on then is not fried)
2. Charging port is fried
To fix that you need to change the complete motherboard, because the charging port is soldered into the board
XTutorials said:
I don't know what you mean by "chargar" and what you say there, but the title of this thread is "short circuit" and no longer charged, but if it's true "no longer charged" and it doesn't charge, that means 2 things;
1. Full Motherboard is fried (if the phone still powers on then is not fried)
2. Charging port is fried
To fix that you need to change the complete motherboard, because the charging port is soldered into the board
Click to expand...
Click to collapse
Hi
When I charge the phone, the power adapter goes off it has a red Led
I think the power supply ic is defective
Where you can find his circuit diagram
Huawei786 said:
Hi
When I charge the phone, the power adapter goes off it has a red Led
I think the power supply ic is defective
Where you can find his circuit diagram
Click to expand...
Click to collapse
I don't know. Device diagrams are rarely send to public. Have you made a google search?
Yes I have
Unfortunately no information found because of short circuit
How to fix the short circuit
How can you upload an image here?
Related
Hi,
I currently repair XDA Exec's for a client of mine who use them for their delivery drivers. They are constantly breaking the screens which are easy to fix, but more often than not they smash off the usb connector and leave it rattling around inside. This is not usually a big problem to fix unless the pads that the 5 pins are soldered to have been ripped off the board. I have found that even if I successfully replace the connector with a new one and solder the two outside pins (which are the gnd and 5v pins) the battery will not charge. The puzzling thing is, if I remove the battery, the red led comes on, presumably indicating power to the device. As soon as I connect the battery the led goes out and the unit boots up only to reveal that it is not charging. So I'm presuming two things:
1. There is some other electronic component damage in the unit caused when the connector broke (due to it being on the end of the charger cable at the time, if this is the case I will scrap the unit)
2. There is some feedback from the battery that the charger needs to continue with it's output and because I didn't reconnect the data pins it won't charge.
Does anyone know how the charging circuit works and what pin / connections are required for charging. I guess the same principle will apply to many PDA's & mobile phones.
Thanks
Rick
http://wiki.xda-developers.com/index.php?pagename=HTC Universal Service Manual
http://pinouts.ru/Slots/USB_pinout.shtml
mini usb is a standart anyway
.Lemon
Hi,
Thanks for your reply, call me a lemon but what utility do I need to unpack a .lemon file ?
Rick
Lemon Head
Forget that last post ok...
Hi guys,
i have a SGH-i780 Smartphone and i am quite happy with it. The only negative aspect is short battery lifetime when beeing always online for push-mail.
Therefore i would like to have a docking station for my device, where i place it and it is been charged. But as the f******g Samsung developers placed the charge/sync connector on the upper right side of the device i would always have to place it in docking and connect charge cable.
Therefore i thought about modifying the phone which means making the 3 battery connectors accessbile from outside to connect the external charger box (including charging electronic!).
And here is my question: do you think connecting a charging electronic directly to the battery while it is inside the phone will harm or destroy parts of the phone? I am wondering whether the internal charging circuit inside the phone will get hurt by connecting another circuit in parallel ...
Thanks for your comments!
For sure this could hurt your device...............
In this case I'd say the risk isn't worth the reward. The risk is that you fry your phone, and at worst it sparks and causes other damage. You can have it check for mail less often, unless you need your email to be live.
such heavy modifications never go without harm to technology.
It simply is not designed to work that way, so you'd be better off with a docking station or a better Powerpack.
You can find those on Ebay for pretty low prices...
thanks for your replies!
I also thought about wiring the +5V and GND pins from the USB connector to the bottom of the device and connect a power supply directly (which but be the way it is thought to be) but the usb connector is very very tiny and i doubt i will be able to connect and solder the cables to the right pins ...
any furhter ideas?
not really no... trying such delicate soldering quests is generally not a good idea without the proper Equipment.
Whatever you do to modify your phone, it will void your warranty and you'll not get a replacement device if you trash yours...
Don't do this!
By bypassing the phone's own charging circuit you are removing any sort of overvolt protection!
Although I am not familiar with this phone and your post is somewhat hard to understand, I take you usually sync it, then take the battery out to charge that separately with another cable?
If that is the case then, no, don't move the connector so you can charge directly to the battery! It will be potentially very bad for the battery and phone.
Out of the question
DO NOT under any circumstances play with your battery.
What you were taught in your physics class do not apply to microelectronics!
There are many 5V+ out there and ALL are different!
While rms value is the same, the waveforms of the current/voltage can be any imagineable. So, the best thing to do near your cradle is to pin a sign "KEEP OUT!"
Technically, you could create another charger that connects directly to the battery. There are dozens of ways.
BUT, since you asked, then you don't understand how. Assuming it is a liPo or LiIon battery, if you charge it wrong, the resulting explosion and fire will be nasty.
Why not get a second battery in an external charger, and just swap them.
worwig said:
Technically, you could create another charger that connects directly to the battery. There are dozens of ways.
Click to expand...
Click to collapse
Do you mean while it's inside the phone?
worwig said:
BUT, since you asked, then you don't understand how. Assuming it is a liPo or LiIon battery, if you charge it wrong, the resulting explosion and fire will be nasty.
Click to expand...
Click to collapse
I already have another appropriate charger because Samsung ships this phone with an charging box.
worwig said:
Why not get a second battery in an external charger, and just swap them.
Click to expand...
Click to collapse
Because then i would always have to take a second battery with me, every time! That's awful!
I just want to have a docking station, that charges the phone while it's plugged in ... without terrible wiring needed. Then i can make sure the phone is always fully charged when taking it.
I attached 2 pictures showing you my 2 ideas:
1) wiring the external charger directly to the battery (but of course this would also mean connecting it directly to the internal charging circuit of the phone!). I fear this would damage the phone!
2) wiring the power supply to the power supply connector. This should definitely work, but soldering the cables on the tiny connector will be a pain!
Thanks for your help!
Hy,
I have a Trinity that doesn't charge the battery.
The board conector is OK, and the AC charger is also OK.
Does anyone know or have a circuit diagram for this phone, or can give me a hint regarding the charging circuit ways?
Thanks in advance.
BR
Did you have change settings or the OS before you got the problem?
how you will charge the Battery? => USB or power supply/Charger
If no USB charging but only charge with the charger: Check out the registry if there can be an entry for (USB) charging. It can be called like as "EnableUsbCarging" and must be set to 1 for charging on USB.
Hy,
Sorry to answer you only now.
I've tried it both ways... I believe it has to be a hardware problem.
This is why I asked for a tech-diagram of this model.
BR
No one has e tech spec or board diagram for this HTC?
Need one too!
Futuro said:
Hy,
Sorry to answer you only now.
I've tried it both ways... I believe it has to be a hardware problem.
This is why I asked for a tech-diagram of this model.
BR
Click to expand...
Click to collapse
Hi, I just reactivated my Trinity after waiting for a battery (direct) charger to arrive from the states, so I'm not in a hurry, though having to turn it off every few days...
Anyway, My Trinity stopped charging and isn't detected via USB, I'm guessing HW fault.
To make a short story long, I saw that the price for "fixing charging circuit" is the same as changing a connector (very high, both of them), and I figured I can do it myself, BTW 5VDC is found on the MB.
Where can I find the circuit schematics please?
I got in a really nice and sleek Impression I10A Tablet.
The Connector for the USB/Power has broke and, unfortunately, it's the only connector available for power..
http://sjfm.us/temp/i10aConnector.jpg
Now, my first thought was to replace the motherboard. No such luck. Finding ANY kind of Impression parts is difficult... Second choice was to replace the power connector itself. Tedious and a pain in the arse, but doable. But I have had bad luck IDing power connectors for tablets (most notably Kindle Fires and the MicroUSB) so if anyone can help identify the above connector...
"I am all ears"
-Ross Perot, 1992 Presidential Debates
Anyways, so then I got creative and, just to confirm "Proof Of Life" (so to speak), I hooked up a 12v 2a power adapter directly to the battery connector (Red Box) to bypass the damaged power port (Blue Box).....
http://sjfm.us/temp/i10aPower.jpg
.....on the PCB and viola'..
We have a heartbeat!!
OK.. So now I am thinking that, if I am lucky, the 12v power will power that tablet AND charge the battery.. But then I am thinking that there is likely more to charging a battery than simply applying a power adapter directly to a battery and getting a charge..
Sure enough... When the battery AND the 12v power is hooked up, the tablet boots up under the battery and then dies before it can get to the dashboard..
When the 12v power alone is hooked in, the tablet boots up fine and shows a full "charge"..
So, here's my question..
Is there a way to kludge a power connector to bypass the damaged port and power the tablet and charge the battery..
In the alternative, can anyone point me to a knowledgeable source that might be able to ID that type of power connector??
Thanx in advance..
Michale
Never connect a power supply directly to a battery.
That's a recipe for fire and explosion.
12V? Why do you think that anything is 12V?
Does the stock AC adapter say that?
If you want to get this thing working properly you'll have to figure out on the circuit board where the AC adapter hooked in.
If you are sure of what the total battery voltage is (how many cells) then you could also hook a power supply in with the battery disconnected.
Thanx for the reply. Apologies for the delay in responding. Was out of the country for a week... In the middle of the Atlantic Ocean. No web access!!!
Renate NST said:
Never connect a power supply directly to a battery.
That's a recipe for fire and explosion.
Click to expand...
Click to collapse
Yea, as I soon found out. I was tinkering with it longer than normal and a small little component near the power connector released the blue smoke.. So, I think that MB is borked..
Renate NST said:
12V? Why do you think that anything is 12V?
Does the stock AC adapter say that?
Click to expand...
Click to collapse
Yea, the stock power adapter for the unit is a 12v/1.5A power pack.
Renate NST said:
If you want to get this thing working properly you'll have to figure out on the circuit board where the AC adapter hooked in.
If you are sure of what the total battery voltage is (how many cells) then you could also hook a power supply in with the battery disconnected.
Click to expand...
Click to collapse
I do plan on repairing that component. Eventually. Once I do, I'll put your advice into practice..
Thanx again for the response...
Michale
Hi all,
I am a newbie to the forum.
My tablet does not charge the battery. I open it and find that the motherboard only supply 3.74v, instead of standard 4.2v, to the 3.7v Li-ion battery. I examine the motherboard and find that a white part (in the middle of the photo below, opposite to the flat cable) was burnt. The white part is found in the charging circuit, giving power to a regulator before charging the battery.:crying:
http://forum.xda-developers.com/picture.php?albumid=9852&pictureid=38705
Anyone knows what the burnt white part probably is?
Many thanks.
twlai said:
Hi all,
I am a newbie to the forum.
My tablet does not charge the battery. I open it and find that the motherboard only supply 3.74v, instead of standard 4.2v, to the 3.7v Li-ion battery. I examine the motherboard and find that a white part (in the middle of the photo below, opposite to the flat cable) was burnt. The white part is found in the charging circuit, giving power to a regulator before charging the battery.:crying:
http://forum.xda-developers.com/picture.php?albumid=9852&pictureid=38705
Anyone knows what the burnt white part probably is?
Many thanks.
Click to expand...
Click to collapse
what tablet is it? make plus model number please
are there still any letters nubers on the part visible?
looks like a resistor to me probably a after release fix one because it's kinda big