Hello.Does TN7 have wireless charging module inside if not then can it be installed?.
I would like to know if this is possible also as the micro USB connector in mine has gotten crushed when I accidentally pushed the connector in the wrong way up. I need to find some way of charging it and nobody seems to be able to offer a repair for it.Hello.Does TN7 have wireless charging module inside if not then can it be installed?.
wireless charging does work if you get a 1000ma output plate, the hassle is it has to go behind the copper foil plate under the cover.
you can patch a usb cable to the battery and use a smart charger to keep it safe or get clever and solder to a live input like the fuse on the IO board. thread it through the stylus hole
you can if carefull patch a USB extension cable into it and mod the case to get a proper socket back or maybe see if a phone repair ship will fit a usb b socket to it.
The easy answer is no. It does not have this built-in, and the battery is non-removeable. There may be some fancy hacker way to do it that involves taking the thing apart and soldering stuff, but there's no consumer-oriented way to do it.
as a non fancy hacker type I have been picking these up with bad ports on purpose.
if you understand a soldering iron and can make 4 joints then its a simple enough fix to get a cheap high power tablet.
chargers such as the QI wireless units or powermats are intelligent so you wont run the risk of burning the house down as they switch off when charged although the unit wont tell you it is on charge the battery level will creep up.
the powermat kits are going dirt cheap for phones like the blackberry torch or iphone 3, you strip out the receiver, connect it to the battery and place between the foil and back plate.
the only issue per se is not being able to charge through a case like the fintie despite the 7mm claims for the chargers which pick up the device but fail to lock and charge. however it is possible to split the fintie case putting the QI charger internals inside it so you can plug the case in instead and charge semi normally.
the main difference between the QI and powermat is the latter is a bit thicker and has magnets in the receiver to allow a positive connection it beeps when connected and comes with its own dedicated charger, the QI unit needs a standard micro usb one.
the usb port is replacable but not at home and the wireless option at least keeps you up and running if it fails. trimming a bit out of the case will allow a proper socket to be fitted instead of the badly designed original. it will just stick out the case a few mm but hold the plug the right way round and more securely.
one issue is that like the last one I picked up is that you need a charged device to test the socket properly incase it is just the usual below minimum charge problem android devices seem to suffer from
if the device is rooted then it should be possible to do everything required even with bad ota by using recovery and the sd card.
so it is fixable for under 20 pounds and I've been buying them for around 25 off ebay. :highfive:
if you understand a soldering iron and can make 4 joints then its a simple enough fix to get a cheap high power tablet.
chargers such as the QI wireless units or powermats are intelligent so you wont run the risk of burning the house down as they switch off when charged although the unit wont tell you it is on charge the battery level will creep up.
the powermat kits are going dirt cheap for phones like the blackberry torch or iphone 3, you strip out the receiver, connect it to the battery and place between the foil and back plate.
the only issue per se is not being able to charge through a case like the fintie despite the 7mm claims for the chargers which pick up the device but fail to lock and charge. however it is possible to split the fintie case putting the QI charger internals inside it so you can plug the case in instead and charge semi normally.
the main difference between the QI and powermat is the latter is a bit thicker and has magnets in the receiver to allow a positive connection it beeps when connected and comes with its own dedicated charger, the QI unit needs a standard micro usb one.
the usb port is replacable but not at home and the wireless option at least keeps you up and running if it fails. trimming a bit out of the case will allow a proper socket to be fitted instead of the badly designed original. it will just stick out the case a few mm but hold the plug the right way round and more securely.
one issue is that like the last one I picked up is that you need a charged device to test the socket properly incase it is just the usual below minimum charge problem android devices seem to suffer from
if the device is rooted then it should be possible to do everything required even with bad ota by using recovery and the sd card.
so it is fixable for under 20 pounds and I've been buying them for around 25 off ebay. :highfive:
I have managed to get wireless charging installed on my device so it is now useable again. I have connected a QI charging card to some contacts on the IO board so you get the lightening bolt when it is charging. I have also installed a charging coil into a case so that it can be charged by plugging a charger into the case.
If the device goes completely flat however, the power from it is insufficient and you get stuck in a state of the battery icon on the screen which can consume more power than the card can deliver so it won't get going again.
I'll post with pictures of what I have done so other interested parties can give it a go if they like when I get them all together.
If the device goes completely flat however, the power from it is insufficient and you get stuck in a state of the battery icon on the screen which can consume more power than the card can deliver so it won't get going again.
I'll post with pictures of what I have done so other interested parties can give it a go if they like when I get them all together.
To add QI standard wireless charging to my TN7, first I took out the IO board, used my multimeter to find to contacts to the + and - 5V DC supply from the microusb on the board and soldered some wires to them as below:
The wires I took out of a spare usb cable. The other ends of the wires I soldered to the contacts of a QI reciever from which I had cut the microusb connector off and exposed some of the wires:
There is of course some tape applied to the soldered contacts on the QI receiver to prevent short circuits. I then peeled the sponge tape pads from the battery and repositioned them to allow the receiver coil to sit against the battery so that it would not cause a bulge in the device:
Finally I cut a section out of the copper heat spreader in the back cover:
All in all not a big job. The wires pass by the volume switches when the case is snapped back together in this case. The QI receiver used in this case can only charge the battery at about 15% per hour when the screen is off.
The wires I took out of a spare usb cable. The other ends of the wires I soldered to the contacts of a QI reciever from which I had cut the microusb connector off and exposed some of the wires:
There is of course some tape applied to the soldered contacts on the QI receiver to prevent short circuits. I then peeled the sponge tape pads from the battery and repositioned them to allow the receiver coil to sit against the battery so that it would not cause a bulge in the device:
Finally I cut a section out of the copper heat spreader in the back cover:
All in all not a big job. The wires pass by the volume switches when the case is snapped back together in this case. The QI receiver used in this case can only charge the battery at about 15% per hour when the screen is off.
Awesome walkthrough! I'm still never coming near any of my devices with a soldering iron though... every time I've tried to solder anything, I end up with a mess and a broken gadget.
Question?
Can I ask you one thing? From the picture below, which part is the battery? Can you highlight it? It'd be a big help.
Finally I cut a section out of the copper heat spreader in the back cover:
The battery is underneath the wireless reciever is in the picture. It is almost the full width of the unit and goes up to the electronics which is almost the top half of the unit. It has the black tape on it either side of and below the wireless reciever.
Okay, so could those two solder points be used to solder a cable to charge the device, like say a USB cable, solder the power wires from the cable to the solder points, obviously making sure not to reverse the polarity, and then use that as a replacement to charge a unit with a broken micro usb port, and not have to worry about using a smart charger or anything??? If so this tutorial would be a life saver!
Yes, I have used that method to charge the device in the past before installing the wireless system. Be aware however that when you bypass the charging circuitry, there is the potential for overcharging...
The battery has red and black wires on the solder contact points so pretty obvious if you want to do that.
I've soldered QI universal wireless charger to my tn7 and its not charging anyways , same as for micro usb anyone have any ideas about whats going in my tablet ?
Can you provide some information about how and where you have soldered the charger? and did you check the polarity?
What kind of charger are you using, Stargazer Optimus? I was thinking about buying the Nexus charger because it's rated at 1.8A output.
The module I've bought and the pad are attached as images
And for polarity I was referring to your post and for QI module I checked usb wiki.
To note when I soldered and put QI module on pad it switched from red (not charging) to blue (charging) but tablet was not charging.
I was checking with original tn7 charger 5v 2a, 5v 1a iphone charger and tried with pc usb port all three were doing same stuff.
I did detach io module from main board before soldering.
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You will need to check that the receiver is delivering the required voltage and current with a multimeter. Ideally you will do this at the ends of the wires that get soldered on the IO board.
If this helps, before cutting QI module I've tested on Samsung alpha smartphone and it did charge the phone, could it be cause of amps ? and yes when I'll get hand on a multimeter I will test.
Thanks for help!
I just tried this out but made a big mistake that some of you may make as well. I assumed the 5V wire was 5V and the ground was ground. Boy, was I wrong. They're switched! But I only found this out after hooking everything up and putting the receiver on the charger to bench test before piecing things back together. It's been about an hour since I've finished up and all it shows is the battery signal with the lightning bolt in the middle and then it switches to an empty battery and keeps alternating like that. I'll keep it on the charger all day and hope it works out.
I'm using an Anker qi charger and a universal receiver sold on Amazon by Buboon, I think. Charger is rated at 1A output and receiver is rated at 500mA - 1A.
I'm using an Anker qi charger and a universal receiver sold on Amazon by Buboon, I think. Charger is rated at 1A output and receiver is rated at 500mA - 1A.
Hey, did you figure it out? Mine's doing the same thing, though it's wired with usb cable, not a QI charger, though that may be the next step. I'm gonna leave it for now, and just keep an eye on it. Fingers crossed.
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