hi! i have a dopod 838 pro. and it suddenly cant turn on. i was just texting then it went buggy (hanging up) then i did a soft reset then all of a sudden it didnt turn on. i was charging it at that time.
the phone never got wet, was never dropped. i installed the official wm 6.1 rom and it had been running for more than two weeks so i dont think the problem was the ROM. battery is good since i still get two days of battery.
i have tried hard resets, used the usb connector to power the phone up. i had this sent to the authorized htc service center, they tried another batt and charger but still nothing. i was told to leave it for 4 to 5 days...and after the wait i was told that the main board is the problem. and replacement is not an option since it would cost me twice the price of a second hand unit.
this was an observation: when i remove the battery and connect it to the charger, LED is red then it disappears when i replace the battery. no amber going.
is there still a fix for this? the service center does not perform any board level repairs. if this is a battery connector problem then a little soldering might fix it right? i hope i can still revive this. thanks!
a little help please! more power to this forum. thanks!
gab
The Hermes mainboard is a multilevel board. If the problem is a broken connector inside the mb then theres no hope. So saying, look at the connectors. If you see a break you can resolder and maybe have a bit more life yet.
Cheers...
ditto ultramag69.
Breaks in the connections below the board surface are virtual death to the motherboard. you could in theory put in jumper wires but you'd need detailed circuit diagrams and suitable solder points. However it may just be the surface connections of the battery connector block and these can be re-soldered. Here's a pic of the board with the block de-soldered;
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However, before going to re-solder you could just check it's not a poor contact between connector and battery (I doubt it is, but you never know). To test this out try this:
You could also press on the connector a little while you power on. if this worked you could be fairly sure it's either the soldered connections or a crack internally.
Now if all of the above fails, you need to be aware that it could be a number of other things. A fault in the usb connector or damaged connections on the USB to board joints. Conceivably it could be some damaged caused (hairline crack perhaps) when you inserted the stylus in the reset hole. possibly even a damaged reset switch stuck in the on position etc etc. Any of these things would really require test equipment and even then without suitable data it would be difficult to diagnose.
good luck
mike
Related
Long post, sorry.
Phone slid off the couch, hit the floor, battery door popped off, and afterwards if I moved the phone while on a call or slid the keyboard out to type it would just go black.
A light shake and it would die. So I popped the battery out and took the back cover off. Inside, the black battery connector (I can post a pic) was half attached like a loose tooth.
Took it to a repair shop, the guy was great soldered it back on but said it probably wouldnt charge cause a line on the main board broke????.
Phone doesn't seem to recognize the battery. Red solid light when plugged in, no amber with the battery in. Wont turn on. Anyone have any suggestions or am I looking at a brick. Does anyone on this board do repairs like this?
Its a Softbank X01HT from ebay and I flashed it to Mobile 6 so warranty is pretty much out of the question.
Any help would be greatly appreciated.
Thanks,
Fredrick
PS, I'd make a suggestion to anyone who's battery moves around inside the phone to wedge it in place so this doesn't happen to you. We don't hear of this happening often(or ever) but it happen to me, I suspect its because the battery has a little bit of room to move.
May get a chance late tomorrow to see if there may be a work around. This is not an easy board to work on though. A pic of the "broken-line" would be most useful if at all possible,
Can we assume, the black part you refer to is the part with the gold battery connectors at the bottom of this photo?
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Mike
Thanks for the quick reply Mike.
While it was off he showed me the bottom of the connector assembly, where the broken line is.
Red arrows are the 6 solder points
Blue arrows show the line.( I think, I'm not 100% sure what a line is)
How this helps clarify.
Thanks,
Fredrick
Well sadly, having looked at the board, I think the guy who soldered the connector back on, did about as good a job as it is possible to do. It appears that the connector block contacts (two of them) have broken off the board contacts. With a crude board you could simply trace back to the break point and solder a wire from the board to the connector. However the Hermes usesa multi-layer board that means it is impossible to trace back to a point just after the break.
Unfortunately then, unless there was some of the board contact still showing, you cannot solder short wires to join to the contact block With a detailed circuit diagram you might be able to identify alternate points to solder a couple of wires to link to the connector block. This though is such a remote possibility that you can virtually count it out. I do not know of such a diagram that is publically available and manual soldering on this scale would be almost impossible. If HTC were asked to repair this board, they would just replace it.
Sorry!
Mike
PS You didn't say whether it worked normally after the repair and before the battery ran flat. If it did, you could in theory charge your batteries in a free standing battery charger, but I doubt it would be worth the hassle.
mikechannon said:
You didn't say whether it worked normally after the repair and before the battery ran flat. If it did, you could in theory charge your batteries in a free standing battery charger, but I doubt it would be worth the hassle.
Click to expand...
Click to collapse
Our solder friend suggested the same, but the phone doesn't recognize the battery being connected. So no dice, its a brick.
Anyone want to buy a white case with a front camera. Or better yet, can I buy a board for it somewhere?
Thanks again for a your time Mike.
Fredrick
I was using my nike with an external antenna plug in to get signal, after I removed the external antenna my nike now won't get any signal at all! can someone help tell me what happened, thnks in advance!
This doesnt help, but how do you have an external antenna?
:/
wen u remove the batt cover u shud see the hole n the external antenna! its right below the speaker!
wat i did was i used a wilson external antenna n plugged it in the nike in the antenna port as described. i was able to get increased signal in my room. i do that wen im at home, but wen i unplug the antenna, the fone will not pik up any signal at all on its own! i switched different sims tmobile n att, i hard reset, but nothing!
the only way i can get signal even 3g is to plug the antenna bak in, but i cant be stuk w tht all the time! plzzzz help! or tell me where i can gt it fix! thnks!
Oh, good to know. I asked because my house only has two points that can pick up network (old building with thick walls) it would be great to have an external antenna, but not if I have to plug-in the naked phone there... ;/
I've had poor signal and short battery life problems with my phone ever since i first got it. I fixed it by getting a 3" piece of auto electric wire and stripping of the insulation then took 5 or 6 strands of wire and twisted them together and bent one end at a right angle so that it would fit into the center of the external antenna plug and refitted the battery cover. I now get a minimum of two bars on the signal meter where as before I got no signal and my battery life has more than doubled as it is no longer searching for a signal
wud u b kind to tke a pux of the nike with wire plugged in to the antenna, I want to try but I don't to further damage the fne thnks
here's a pic of the wire with the battery cover removed
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I just used enough strands of wire when twisted together to fit into the center hole of the antenna plug, any thicker and the cover doesen't fit properly
But in the service manual of the htc dual says this is a connector Rf female 4p,ms-162 HIrose, this is for the external antena????
Hello, I am having an odd problem, I can get the phone to turn on, charge, and watch youtube perfectly. All this can be done by wedging a mini sd card in between the battery exact opposite of the terminals. What could be the problem of this? No sd card, just did a hard reset, and using the oem ac charger. If I pull out the mini sd card the phone shuts off, And if I connect the charger all I get is the solid red light. I am comfortable taking it apart and have all the correct tools.
Blakehenry00 said:
Hello, I am having an odd problem, I can get the phone to turn on, charge, and watch youtube perfectly. All this can be done by wedging a mini sd card in between the battery exact opposite of the terminals. What could be the problem of this? No sd card, just did a hard reset, and using the oem ac charger. If I pull out the mini sd card the phone shuts off, And if I connect the charger all I get is the solid red light. I am comfortable taking it apart and have all the correct tools.
Click to expand...
Click to collapse
You have really answered your own question. You have a pin that is not making good contact with the battery. You can clean the contacts, but that may not be enough. You can try bending the contacts out in the direction of the battery a little. However if you do this you run the risk of cracking the solder joints between the contacts and the motherboard. So, as a do it yourself solution you can do this:
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Mike
Alright, If anyone is having this problem I just fixed mine for good (I hope). The points where the battery contacts and mobo meet were cracked apart, thus making the phone work when something was causing the battery to put extra force on it. All I had to do was remove the mobo and solder them back on. Took 30s for all 6. Now it comes on and works great no matter what.
I had the same problem a while before I realized it about six months ago, on the same model as yours. I then realized what you did, the battery wasn't contacting well, and I whipped out a business card, cut it to size, slapped it in with the battery and viola, no more strange power losses. So you say that the solder points were cracked ehh? Something I will be checking in about 2 minutes, don't doubt Thanks for the tip!
UPDATE: Took it apart, and couldn't see any place where the pins have cracked. Seemed solid to me, even under a magnifying glass. Did you somehow take the black protector off of the pins and find it under that? Thanks for any info you can send.
Mine was cracked between the mobo and pins, Test it with a multi-meter for resistance, It could be cracked or weak but you can't see it.
My himalaya's usb/chargeport has been completely ripped off its motherboard. I have to externally charge battery.
however, i got to looking at the thing and i saw a weird jack on the back that looks like its the same pinlayout.
whats the purpose of this port?
I'am looking for that answer like 5 days! I searched a littke over net and i think is called CF backpack jack! Check this link http://www.theunwired.net/?item=rev...backpack-for-himalaya-pocket-pc-phone-edition
And i think that phone can't be charged over that jack. If i am wrong i would be glad to someone confirm that!
If your connector is in one piece (without broken pins, pins 13, 14, 15,16 and 22 are for usb and charge) u can take it to local gsm service to get it solder back for u! If is not, u can use alternate miniUSB jack, there is thread in this forum how to do that! But is ugly to see a small connector that peeking out of phone like a mouse!!!
well if the cfbackpack cna provide power over the power, youd think you could charge from it.
well we can use a any broken one and pull out a connector and solder a cable for it!? But a problem is where to find a broken cfbackback these days!?
i don´t know of any shop who sell this part,dood!
there can found very,very rarely on Ebay my friend !
So, the general advice for all those with broken himalaya connector (depending of what parts are broken) is alternative miniUSB OR, buy an universal charger for charging the battery
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And for PC sync use bluetooth USB dongle (i am not so happy with these solution, cuz my hima don't hold battery much time and when use this dongle it won't hold battery at all, especially when transfer to many data)
And for flashing a new rom, we can use a SD card, but still needs a USB cable for taking a header from bootloader http://forum.xda-developers.com/showthread.php?t=482236)
soldering anything on that motherboard is a real sob, the pins are bloody tiny=
Yes i new that, but that is a job for a service guy. I took the draw and scheme for what pins goes with what (for miniUSB) and took the phone to him and he do the solder job with his super thin Solder Iron and that job costs me a 3 euro. He finished the job in 1h and 15 mins.! It's forbidden to people who don't know anything about these things to take any steps alone. Consult with some gsm service first, instead to do something wrong and destroy the phone board pins and the connector!!! These connector is a general problem! After 1 or 2 years of use, almost every Himalaya will have this problem!!!!
Where to buy Himalaya CF & VGA Backpack
tl;dr: Check out whether one of your missing screws has got stuck in the tiny space underneath the ribbon connectors (CHECK ATTACHED PHOTOS)
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long story: I'm far from wealthy, but I wanted to get my parents some piece of electronic that they can surf the web and have fun with. I found this cheap used Nexus 7 online and today I've been basically playing around with it all day checking out different roms and stuff.
At one point I had to unplug the battery because I couldn't shut down the tablet. When I did that, while holding the tablet I shook it up a little and heard something loose in it. I noticed there were screws missing. One of the screws was poking out from underneath the charging ribbon. Without taking off the ribbon I tried to wiggle it around a bit with a screwdriver, hoping it would come out, but instead it got stuck inside a little further. I noticed the noise when shaking the device was gone, so I just put on the cover back on and tried to start it. It wouldn't even light up.
I obviously tried everything suggested on the web. Holding the power button for 30s and such. I plugged the Nexus for charging and heard a little buzzing sound coming FROM THE TABLET. I got curious, so I took off the back again, removed the battery and plugged in the USB charger again. The buzz was still there and it was coming from around the charger ribbon. I unplugged it, removed the screw that got stuck inside and the tablet works again. It must've been causing a short circuit, or something.
I'm so ****ing happy, you have no idea.
Thankfully it works flawlessly, the battery is fine and it charges alright.
I really hope this helps somebody out. I thought the tablet was done, but thankfully I'm as lucky as I am dumb.
Feel free to add this suggestion to any Nexus 7 Helper topic of any sorts.