[Q] Broken optimus lg motherboard - General Questions and Answers

Hi all and thanks for reading I just need some advice
I have this lg optimus p-769 and it was working recently untill my cousin decided to throw it because he was mad ever since it does not turn on
I have another lg phone same model and everything i used the battery from that one to try and turn it on and nothing
but what dose happend on the smartphone it seems to light up really quick every single time i click the power button everytime i click that the 2 menu button blink really fast and that it
beside that i am thinking it can be
-One of the 7 cables inside mustve got detached
-The usb port does not charge anymore although another battery should work
-Motherboard is dead
-currently i am charging it for like 10 hours to see if the phones probably couldve messed up the bios that tells it that it fully charged
-And the last thing I am going to do is switch pieces from a working phone over to that untill it finally works
if its the MOTHERBOARD where can i find one its pretty hard i searched google for ( lg optimus -p796 motherboard ) NO results

Have you tried searching on eBay?

yeah
Estel37 said:
Have you tried searching on eBay?
Click to expand...
Click to collapse
actually i have but i only got 1 sucessfull search i want to see more prices

Related

Htc FUZE/Diamond repair parts

What a week, Ok new to this forum loving the site.. I got a htc fuze but things got heated with my girl and the she crack the screen... NP!!!! i got the replacement coming, and i begain taking it apart and when taking off the mini usb/flex-ribbon cable it rip ... this seems to be the main power for the phone. Part no.50h10078 do anyone have or know of a diamond/fuze part site i can order this power board from?
Its located in the base of the phone and the flex/ribbon cable runs under the battery to the connect to the top of the phone threw th back
thank you in advance
@lphar56
Same here, but I still can charge the battery (not fully ripped off). Lost vibration and USB-connectivity. It sucks big time.
Found any solution to this?
gbb4uss said:
Same here, but I still can charge the battery (not fully ripped off). Lost vibration and USB-connectivity. It sucks big time.
Found any solution to this?
Click to expand...
Click to collapse
try asking here
http://forum.xda-developers.com/showthread.php?t=585196

[Q] Phone bricked.Dont know what happened.

Ok guys i have helped a lot of you out there but i need help this time.
Few days ago i accidently dropped my phone down but nothing happened that time.
Next day everything was fine until the day after when my phone suddenly switched off.i switched it on but after few minutes it became off again.then i tried to switch it on but nothing happened.
i tried removing battery and charging again but nothing happened.
but one strange thing was my battery was getting hot even when the phone was off.
i thought smth is wrong with battery and i bought a new one but nothing happened.
no download mode no recovery nothing....i mean nothing..........
So know i dont know whats wrong and its not even in warranty as i dont have bill and other things.
i went to a local shop but they said give it to us a we will find the problem but i am scared that there may be only minute problem for which they will charge like rs.500 to rs.1500 and may still not fix it.so i dont trust them.
so pls. help by telling me what could have happened and has this happened to anyone else??
and yeah i have not flashed clockwork mod.....i had chocobread 3.2........
maybe the battery leaked inside the phone and thats why it wouldnt on
thats why the battery was hot due to the chemical reactions taking place inside the battery.
try putting the new battery in and charging it for like 10 min and then on and see if it works.
try shaking the phone also to see if any part inside the phone is lose or broken
last option is give it for repair
PS: if u do know a lot about ur phone hardware try opening it and see whats wrong inside even though i got no idea what will happen coz ive never tried
best of luck
may be the screens cable broken..
It looks something that samsung care can fix...be ready to shell out some cash...
I would advise against unofficial service, atleast for smartphones...
Sent from my GT S5670 using xda free, (coz the premium keeps force closing :banghead: )
Well its really f***in trouble man...
I'm guessing that your phones hardware are down, because of the impact... maybe the display flexible or the power supply that's going bad and that's why you're phone can't turned on again..
Battery shouldn't be problem, coz it charge and getting hot...
My advise is just go and repair it to the Samsung Service Center..
Just my little opinion..
Sent from my Galaxy Fit
Thanks guys but how much expense can I expect like from just damaged power supply to damaged chips?
I don't want to spend much as I am looking to buy s3 very soon.
-HellRaiser- said:
Thanks guys but how much expense can I expect like from just damaged power supply to damaged chips?
I don't want to spend much as I am looking to buy s3 very soon.
Click to expand...
Click to collapse
My friend which is a phone technician told me that your problem is the IC Power (power supply)..
Just replace it with the new one ...
I'll guest its about 5 to 10 USD..
Sent from my Galaxy Fit
It should not cost too much. While i doubt that it would have anything to do with the battery (as ive dropped my phone several times over the past one yr ) id agree that you take it to the samsung service ctr. It may cost a little, but the fit is worth every penny
Sent from my GT-S5670 using XDA
It seems the Power IC, however check the pins that connect battery with motherboard.

[Q] LG G2 will not power on, seemingly no reason

Here is what happened exactly:
So the phone is sitting on my windowsill so i can get service and receive texts messages. i get a text so i walk over, pick up my phone, unlock it, and i pressed on the textbox to start typing my reply message. as soon as i press the text box my phone freezes, and thinking its no big deal i hold down the power button to turn off my phone (took about 10 seconds to power off). Now my G2 will not do anything at all, wont power on, wont charge, the red light doesn't even come on with the charger plugged in.
Things I've tried:
holding power/power+down/power+up for 2 minutes+
disconnecting the battery for 5 minutes and trying ^ again
disconnecting every component and reconnecting then trying ^^ again.
disconnecting battery, plugging in charger
disconnecting battery, plugging in charger, then reconnecting battery with charger still attached
charging with lg charger for 12 hours
additional details that may be useful:
at&t D800
rooted
cwm recovery
optimus g3 custom ROM
literally never have had an issue with this phone before
a new battery is on its way in case that is the issue
blacklight215 said:
additional details that may be useful:
a new battery is on its way in case that is the issue
Click to expand...
Click to collapse
Scratch that, i actually canceled the purchase of the new battery because i think i may need a new mobo instead. I'm not gonna buy anything until i get a second opinion at least.
sorry about the 3rd post in a row
I've ordered a new motherboard that has arrived today in the mail. after i get that in my old phone ill update the thread again.
I have to say though, i am extremely surprised and irritated by the absolute lack of support I've received from this site. i would always come here to find answers in other threads and the community seemed pretty awesome, so its pretty unfortunate that i haven't gotten even a single reply. i guess people only want to help others when they already no the answer...
blacklight215 said:
I've ordered a new motherboard that has arrived today in the mail. after i get that in my old phone ill update the thread again.
I have to say though, i am extremely surprised and irritated by the absolute lack of support I've received from this site. i would always come here to find answers in other threads and the community seemed pretty awesome, so its pretty unfortunate that i haven't gotten even a single reply. i guess people only want to help others when they already no the answer...
Click to expand...
Click to collapse
Have you found a solution to this? My phone did the exact same thing yours did last Friday. I tried several button combos and the only thing that gave me some hope was resetting (power + vol. down). I was able to get the LG splash, then the ATT splash and jingle with the LED lights changing colors, but that was it, went back to dead. I'm debating ordering a battery and some tools to try and get this working again.
thestrangebrew said:
Have you found a solution to this? My phone did the exact same thing yours did last Friday. I tried several button combos and the only thing that gave me some hope was resetting (power + vol. down). I was able to get the LG splash, then the ATT splash and jingle with the LED lights changing colors, but that was it, went back to dead. I'm debating ordering a battery and some tools to try and get this working again.
Click to expand...
Click to collapse
Yeah, so i got the mobo in my phone and it turned on and everything was working again! however the mobo i bought had a broken battery connection so i could only use it if it was on the charger so i had to send it back. but replacing my motherboard will fix my issue.
as for yours i have no idea, if it wont turn on even with the charger plugged in then replacing your mobo may be a solution.
i still think its pathetic that no one with real experience has replied to this thread, i guess you cant believe what your told about this place unless your question is easy to answer.
blacklight215 said:
Yeah, so i got the mobo in my phone and it turned on and everything was working again! however the mobo i bought had a broken battery connection so i could only use it if it was on the charger so i had to send it back. but replacing my motherboard will fix my issue.
as for yours i have no idea, if it wont turn on even with the charger plugged in then replacing your mobo may be a solution.
i still think its pathetic that no one with real experience has replied to this thread, i guess you cant believe what your told about this place unless your question is easy to answer.
Click to expand...
Click to collapse
Where and how much was your mobo? Did you have to solder anything?
thestrangebrew said:
Where and how much was your mobo? Did you have to solder anything?
Click to expand...
Click to collapse
i got it on eBay, the original price was like $120 but i put in an offer of $75 and they took it. when you buy it make sure you compare the pictures on the posting to your actual Mobo.
All that you will need for the switch is a credit card, a knife, an extremely tiny screw driver, and some double sided tape(the tape is optional).
as you can see in my picture, the board i bought is on the right and the old one is on the left. you have to watch for stuff like that when buying a part like this.
i think I'm about to buy a D800 G2 with a busted screen for $40 in the next hour, if i get it ill let you know how it goes.
Success!!!
Alright so yesterday i did buy that busted G2 and when i met up with the kid i made sure everything worked before i bought it. i got back to work and made the switch(i was going slow and i was debating on swapping the charging component, took about 35 minutes).
I did not wanna put my Sim in the phone until after i had downloaded all my apps and configured all of my settings the way i like them, so about 6 hours later i get a chance to make the final switch over. when i did put in my SIM everything APPEARED to work fine, but when i left my home i realized that my data was not sending or receiving anything at all? i went to the grocery store and bought a glasses repair kit for the screwdriver inside and opened the phone back up, everything appeared to be connected properly.
I left and called AT&T customer support and this guy helped me fix the issue, apparently their system though i was still using the temp iPhone 4 i had. after he switched the old IMEI number to my new Mobo's IMEI, i restarted my phone and it worked perfectly! i highly recommend taking this route if you can get a new board for less than a new G2 costs.
The Mobo i got off the kid is legit too, i guess he bought it only a month or two ago because it has some features i did not have like the knock code. i also got it rooted and flashed TWRP, not sure if ill flash a G3 ROM or leave it like it is.

LG G Flex 2 H950 Random rebooting

Hi guys!
I bought one of those LG G Flex 2 H950 @ US$249 on eBay from Qualitycellz. However, my unit seems to have some issues...
It does not matter what I am doing on my phone, does not matter whether I am using a SIM-card or not (I tried the phone with and without Sim-Card), my phone keeps rebooting on various situations, meaning that there is no pattern or logic on those restarts. Usually I am just casually using my LG G Flex 2 and bang, the phone restarts. I can't find any meaning at all. I have looked it up but I could not find anyone with a similar issue, nor a solution.
What makes it even more crazy is the fact that I have tried numerous factory resets, as well as installing a new ROM! (I have installed the H950PR 5.1.1 ROM over the 5.0.2 AT&T one), however the phone is still not working properly. I could swear the problem was the ROM, but it looks like it is not.
What can I do about it?! I live overseas so returning the phone to get a new one is not an option, and warranty for LG is not international :crying:
Thank you and best regards.
The phone has a hardware defect most likely. I had this problem with my G2 a few months after I purchased it. Regardless of temp or ROM the phone would reboot all the time.
http://forum.xda-developers.com/showthread.php?t=2663369
Sent from my LG-H950
Ace42 said:
The phone has a hardware defect most likely. I had this problem with my G2 a few months after I purchased it. Regardless of temp or ROM the phone would reboot all the time.
http://forum.xda-developers.com/showthread.php?t=2663369
Sent from my LG-H950
Click to expand...
Click to collapse
I see. And how did you solve the problem in the end?
If this is really a hardware problem, I am helpless, I guess...since I am not in the United States right now.
Rizera said:
I see. And how did you solve the problem in the end?
If this is really a hardware problem, I am helpless, I guess...since I am not in the United States right now.
Click to expand...
Click to collapse
It was never resolved, actually got worse ha-ha. Sometime in Aug or July it stopped going into the OS so I started disassembling it out of frustration. Also linked the wrong post.
http://forum.xda-developers.com/showthread.php?p=60328500
Sent from my LG-H950
Exact same issue
I also bought an lg g flex 2 from ebay user qualitycellz. I also do not live in the US. My phone started doing these resets and it got to the point at which it gave up and just wont start... (It tries and tries again until i plug it in or it runs out of charge). There seems to be something dodgy with the seller and I will be emailing him regarding the issue.
Chiming in here, same issue, same ebay seller. Any updates from you guys?
Sent from my LG-H950 using Tapatalk
Same issue here. To turn device back on I have to hit the power and the volume down. If I upgrade to marshmallow will it fix the issue?
My phone reboots when i use 4G, i now only use 3G to avoid any problem, but that's annoying
To bump my previous post, I talked to LG, they claimed a motherboard problem and will be replacing it under warranty.
Same problem here
Thehamster576 said:
I also bought an lg g flex 2 from ebay user qualitycellz. I also do not live in the US. My phone started doing these resets and it got to the point at which it gave up and just wont start... (It tries and tries again until i plug it in or it runs out of charge). There seems to be something dodgy with the seller and I will be emailing him regarding the issue.
Click to expand...
Click to collapse
I too had this same problem for past 2 month's.It all started with the mobile restarting randomly ..2 days ago it stopped to boot up at all.:crying:
It just keeps bootlopping on the LG screen .turns off and again LG.
When I try to use it plugged in ,it works a but slower than normal.
I think it is a hardware issue.maybe with the battery?Guess only ?
Anyone here has a solution ?I am currently outside us .:crying:
I have the same issue with my Flex -2 purchased from same seller last year August.
I also bought an lg g flex 2 from ebay user qualitycellz. I also do not live in the US. My phone started doing these resets for last 4 days. It tries and tries again until i plug it in and press power button. If I disconnect from the wall, it stopped working. But since yesterday it got to the point at which it gave up and just wont start. I see only the LG screen flashing. If I press the power buton
smatamaari said:
I have the same issue with my Flex -2 purchased from same seller last year August.
I also bought an lg g flex 2 from ebay user qualitycellz. I also do not live in the US. My phone started doing these resets for last 4 days. It tries and tries again until i plug it in and press power button. If I disconnect from the wall, it stopped working. But since yesterday it got to the point at which it gave up and just wont start. I see only the LG screen flashing. If I press the power buton
Click to expand...
Click to collapse
Have you got any idea about the solution ?:crying::crying:
same issue here same seller
seems a hardware issue.
dear guys
i have had this problem but it got worst and now it restarts a fast as it can
it restarts when logo comes up
this g flex 2 is making me crazy
please help me if you know anything.
thanks
amiralizadeh said:
dear guys
i have had this problem but it got worst and now it restarts a fast as it can
it restarts when logo comes up
this g flex 2 is making me crazy
please help me if you know anything.
thanks
Click to expand...
Click to collapse
You'll have to send it in. It's a hardware bootloop problem. Only LG can fix it unfortunately.
Sent from my SM-N910T using Tapatalk
Solved
I have changed battery. No more problem with randomly reboot.
Lg flex 2 restarting problem
I tried a lot of things but now i am sure this is a battery problem ,i noticed that when i charge my phone to 100 percent it started normally so every time i charge it all the way to 100 percent it works and when i dont it just restarts so you have 2 options to replace the battery or charge your phone fully every time
Hope this one helped
My G flex 2 also started doing the same. Seller was also the same qualitycellz from ebay.
My flex2 also started random reboots. Once mainboard was changed because there was bootloop issue, but now its a bit different. Also a bit over one year with a new board.. Maybe the reason of it is battery because its quite old. well, I need to wipe it clean just in case.
le grande magnetto said:
My flex2 also started random reboots. Once mainboard was changed because there was bootloop issue, but now its a bit different. Also a bit over one year with a new board.. Maybe the reason of it is battery because its quite old. well, I need to wipe it clean just in case.
Click to expand...
Click to collapse
Haha... Your story is exactly as mine. The random rebooting got worse for me over the span of a week and now it reboots after a second of staring up. So it's basically bricked.:crying:

Phone can't turn on ("crashes" during boot)

Hello guys,
So yesterday night, I connected my phone to my charger before going to bed. Then I saw the phone restart itself (showing the logo animation). Was tired so I just decided to ignore it.
This morning, the phone is not working. When trying to turn the phone on using the power button, it doesn't work. So holding the power button + Volume down button for 10 seconds worked, and the phone showed the boot animation. However, after a while the phone would crash and just turn off during the LG animation. Sometimes the phone would manage to go through the boot animation and saw Optimising apps 1 of 200, but it will never go through the process before shutting itself off.
After leaving it for 8 hours, it doesn't even respond to anything. Holding the power button, with or without the volume down key, connecting it to a PC. Nothing works. Tried charging for an hour but no response as well.
So just some information about this phone:
H959
Running v15e (5.0.1)
Not rooted
Oh another H959 down
내 LG G Flex 2 H959 사용 tapatalk에서 전송
Install the USB drivers from LG site as well as LG Mobile Support Tool. Turn it off, hold volume up button and plug USB cable, the phone will now go into download mode. In LGMST use recovery mode or something like that, u will find it in upper right corner.
Avantu said:
Install the USB drivers from LG site as well as LG Mobile Support Tool. Turn it off, hold volume up button and plug USB cable, the phone will now go into download mode. In LGMST use recovery mode or something like that, u will find it in upper right corner.
Click to expand...
Click to collapse
Still not working D: The phone didn't respond and the computer didn't detect the device.
Could it be a battery issue?
I had very similar issue with 955. Main board was replaced.
mainboard costs like 100+$ what the ****... its just 7 months old
in some country, like in France, warranty is 2 years. How long last your warranty?
z.coniglietti said:
mainboard costs like 100+$ what the ****... its just 7 months old
Click to expand...
Click to collapse
Yeah, mine was also used for about 6 months. Good thing it was replaced by warranty service.
z.coniglietti said:
mainboard costs like 100+$ what the ****... its just 7 months old
Click to expand...
Click to collapse
What the site that sell the mainboard?
The H950 new is about US$200
내 LG G Flex 2 H959 사용 tapatalk에서 전송
http://www.ebay.com/itm/OEM-SPRINT-...NT-32GB-LOGIC-BOARD-MOTHERBOARD-/131689778770
for example
i'm gonna order the battery from aliexpress to see if it fixes anything. a guy in the shop said if it were the processor for charging it wouldnt turn on. he is also thinking its the battery. the battery will come then in 2-3 weeks. i already bought a g3. my wife has i and on 6.0 its a beast plus the screen is beautiful.
as for the warranty, the problem is i bought my phone in the us and now i am in serbia and after that in canada. it's not worth sending it and waiting for it.
z.coniglietti said:
http://www.ebay.com/itm/OEM-SPRINT-...NT-32GB-LOGIC-BOARD-MOTHERBOARD-/131689778770
for example
i'm gonna order the battery from aliexpress to see if it fixes anything. a guy in the shop said if it were the processor for charging it wouldnt turn on. he is also thinking its the battery. the battery will come then in 2-3 weeks. i already bought a g3. my wife has i and on 6.0 its a beast plus the screen is beautiful.
as for the warranty, the problem is i bought my phone in the us and now i am in serbia and after that in canada. it's not worth sending it and waiting for it.
Click to expand...
Click to collapse
I just ordered the battery should be getting it in a few days. I got a feeling it the battery.
내 LG G Flex 2 H959 사용 tapatalk에서 전송
rogconnect said:
I just ordered the battery should be getting it in a few days. I got a feeling it the battery.
내 LG G Flex 2 H959 사용 tapatalk에서 전송
Click to expand...
Click to collapse
was it the battery?
Im having the same issue with my g flex 2
alanzoparris said:
was it the battery?
Im having the same issue with my g flex 2
Click to expand...
Click to collapse
Yes, it's the battery for my case.
Sent from Nexus 5X NDP5 on RingPlus
Exact the same issue with my LGH955. First could be turned on by PB+VD buttons, but crashed after some time. Now, 8 hours later it's not starting anymore. I'm thinking about a new battery (something about 25$ on ebay), but if it's not battery caused, i'will kill my warranty, puh... Or just send it to seller / lg service for an repair...
Same random crashes problem solved
My h955 also had problem with bootloop after 6 months off buying the phone.Tryed with soft and hard reset with no result.Lucky phone was in waranty and it turned up to bi morherboard which was replaced.Now using it for few months with no problems.It seams the problem accurs after 6-7 months of using and it look like the same problem LG g4 has.Fingers crosed that is not a so much common problem with the Lg g flex 2.
Mine - H959 - exhibited the same symptoms after a year of being used. It completely died after 6-7 minutes of running the StabilityTest app.
The charging flex was changed under warranty and the phone seems to run fine now. However, I am reluctant in running the StabilityTest app again, but would kill it again to somehow get rid of it if it's a design flaw that's causing these problems and the warranty accepts it's exchange for something else.
jaxx88 said:
Mine - H959 - exhibited the same symptoms after a year of being used. It completely died after 6-7 minutes of running the StabilityTest app.
The charging flex was changed under warranty and the phone seems to run fine now. However, I am reluctant in running the StabilityTest app again, but would kill it again to somehow get rid of it if it's a design flaw that's causing these problems and the warranty accepts it's exchange for something else.
Click to expand...
Click to collapse
My girlfriends H955 died the same way and got lg g4 in exchange from waranty. So pretty good deal... Now i hope my phone will die soon because the phone restarts randomly from over 2 months.
Battery was not even dead,,,,,it just turned off, will not do anything at all what do indo
critdmg said:
Exact the same issue with my LGH955. First could be turned on by PB+VD buttons, but crashed after some time. Now, 8 hours later it's not starting anymore. I'm thinking about a new battery (something about 25$ on ebay), but if it's not battery caused, i'will kill my warranty, puh... Or just send it to seller / lg service for an repair...
Click to expand...
Click to collapse
got my phone back today from LG support. reason was defect mainboard - was replaced. now it works fine again. funny surprise: before deadly crashes i was only able to install the 5.1.1 version of android. now it's back with 6.0.1 preinstalled (V20c-EUR-XX)...
I had the same problem, replacing the battery didn't fix it, so I took the mainboard out and used a high power air dryer and blew super hot air on it (both sides) for a good 3 or 4 minutes. Now it's working again. Too bad I already bought a new phone.

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