Hi,
I have a kaiser with either a mainboard/usb fault. HTC wanted £250 to fix, so a repair is out of the question.
If I charge the battery on another Kaiser and stick it in my faulty one then my faulty one works fine for a few hours (it discharges more rapidly than it should - I assume due to the fault, but works for probably 4 hours) there is no way of charging via the faulty phone mini usb connector (it lights up amber but doesn't charge, nor does the USB connection hook onto the computer).
Luckily I had hardspl on the phone from new and can easily update via the uSD card if any need.
My questions are these: How can I hard wire my kaiser to a power supply so that I can leave it on in my car at all times? (it doesn't need to be moved)
The battery is 4.2v, can I hook a 5v supply onto the 2 outer pins?
What are the other 2 pins for?
Do I need to connect the 4 copper pads in the battery compartment together?
Thanks for any help that you guys can give!
http://www.mikechannon.net/page1.html
check out the service manual
Hi,
Thanks for that, I scoured through the service manual but I couldn't find anything about the voltages on the battery compartment terminals and therefore how to hotwire power straight into them, I don't know much about this and didn't want to screw it up worse than it already is by sticking 5volts onto them. Looking at the markings on the battery power to the outer 2 terminals would do it but i'm sure there's more to it than that.
Dan.
Many angles to this.
Battery is 3.7 volts. You'd want to supply that. But there is a battery charging circuit inside the phone. How that will effect things? I don't know.
There is a circuit in the battery that gives you battery % I believe. Unless you feel like reverse engineering that, you're in a tight spot.
I'd say save your cash, and buy a new phone. this probably won't end well.
on second thought. If you're already willing to hardwire contacts, why not just hardwire 5V to the USB pins?
Keep your battery in there and you'll have 5V on the usb port keeping everything happy
Hmmmn, you might be on to something with that, the problem with the phone is that it doesn't charge when hooked up. The power light glows amber but it actually makes the phone DISCHARGE faster than when not connected. Once the battery gets completely drained all I get is a RED led.
When I sent it back to HTC they said water damage right away. I know for a fact that it hadn't been wet in more than 2 months (it did get wet but only a few raindrops, just enough I guess to wet a detector strip) from when this fault occurred so perhaps it's not a mainboard fault and is in fact the USB connector failure another thread is referring to....Hmmmm.
Gonna give it a bit of thought and then either get the soldering iron out or just bang it on ebay for spares. Should think the screen assembly would be worth a fair bit!
Perhaps I misunderstood.
If you're getting the magical amber LED while the USB is plugged in, I'll say you have a good connection. I wouldn't screw with any soldering. It does sound like you have a short somewhere.
I only had my phone drain faster than it could charge when I setup a bittorrent client on my phone. Got warm!
Inspecting the board for damage might be the best choice. I've seen a motherboard on a laptop that went out with visible water damage. I scraped off an area with "ick" on it that was shorting out two contacts.
If you can't solve it that way, I'd try to disable 3G/bluetooth/wifi and see how low you can get your power consumption.
I've got a technique that allows me to swap out batteris with a fully charged one without restarting my phone. I plug in my charger gently lift the low battery up with without breaking connection. I slide the full battery under it and slap it in quickly. The only problem is my phone show's it at the low battery percentage. Is there a way to trigger a recheck of the battery power without restarting?
Curious. Why do you do what you do?
I had to replace the speaker on my Turbo. I used a hair dryer to melt the adhesive to take the back off (like i've always done while also making sure not to keep it focused on one specific area of the phone). I am not sure what the problem is but now when I plug the charge cable in, I get a charging symbol in the status bar. When I go to the info page in the settings for the battery, It shows the battery percentage but it says "not charging". Another issue is that when I boot into recovery mode, it displays that the temperature is 429493709 degrees Celsius. I am certain this isn't correct. Has anyone else had this issue? The battery doesn't appear to be swollen. Have also cleaned all of the contacts.
Hi guys,
I had to change both display incl. frame and battery because a barbell fell on my Mi9. This bent the phone at the place of the battery and completely destroyed the display.
I was able to repair the phone quickly, but unfortunatly I did not glue the new battery. Now I was mountain biking and due to the vibrations the battery was torn from the mainboard and parts of the battery cable got stuck in the connector. I had these parts removed carefully by a watchmaker and he assured me that the connerctor looks undamaged.
But now I have the problem that the phone won't start when I insert the old (minimally) bent battery. It does not respond to any input. Only when I charge it, the LED is blinking slowly and the MI Start logo appears for 1/4 second. This process is repeated continuously. The battery also warms up slightly, showing me that it is being charged and that the connection is basically established.
Can you detect a defect on the board by this error description or is this a "typical" battery problem? Or does this error description look familiar to you otherwise?
Thanks for all suggestions,
Mike
Well I'd say that will be a hard problem to diagnose without knowing what to look for, and I definitely don't know but what I'd suggest so you can rule out the battery problem is to try a different battery in the phone and see if you get the same response. If it works happy days problem solved. If not it is more than likely a main board problem or charging connector.
My battery must have swelled up at some point so I decided to change it. It was pushing the back off my phone and wireless charging would not work. Otherwise I would have left it alone but now my front camera doesn't work. I triple checked all the connections and did a factory reset. No go. The camera works on other apps like Snapchat but it's b&w only. It looks like it's night vision and it if you cover the sensor to the right of the ear speaker it dims like you turned off a flashlight.
Any suggestions ?
I'm ordering parts but not sure if that will fix it. (It's the camera and sensor's)
I had my 4xl battery fixed from Ubreakiit and they had to replace a bunch of the device itself.
A swelled Li is a battery failure. Replace immediately a the first sign of swelling.
Once a Li gets below 80% of its original capacity it is more likely to fail, replace it.
Other signs of a battery failure are a sudden change in capacity, any cover or display bulging, and/or erratic fast charging.
A failed Li can take out the display (it normally sits right on it) even the whole phone especially if you suffer a thermal runaway. The tolerances are tight so there's very little room for expansion without pressing on critical components.
Make sure you get the correct parts for that model variant. Carrier phones can use different components that are incompatible with other variants of that same model.