Database Users

Is My HD2 Really Bricked?

On Saturday night i was txting playing beer pong having a good time.
When all of a sudden a black screen came out saying something about how it was goin to restart and reset or something like that and that all my personal info would be gone.
So i did it and once it restarted it just stayed stuck on the boot up screen.
Not thinking twice about it as i was having fun i just put it in my pocket thinking maybe its gonna take a lil longer but then i realized after awhile it was still on that same screen.
I took out the batter turned it on again same thing happened.
I gave up and decided i'd just deal with it the next morning.
Next morning comes its now like around 1-ish crazy party haha
Point is phone is dead i charge it for 30 min? i try turning on and nothing.
So then i boot up pushing both buttons figured i would do a hard reset.
Still nothing!
My friend decides to take me home so i take this time to charge my phone a lil more with his car charger and at first it was charging then out of no where it doesn't charge?
No light?
No boot up?
Nothing?
I take the battery out and back in then plug it into the charger and the light doesn't turn on but my phone just starts vibrating uncontrollably...
This freaks me out so i take the battery out and again same thing.
I took the battery out for a couple minutes then put it back in and it started charging again.
yay!
Oh btw the whole time this happened i was able to get into bootloader mode so i figured it cant be bricked and i can fix it just got to charge it.
I got home battery wasn't that charged but i plugd it in to my computer in bootloader mode hoping it would charge for a bit then i downloaded a new rom and i read it was a good idea to use task29.
Sounded like a great idea to fix my phone.
I got the Repack by ShaDrac and flashed it on my phone.
One strange thing i did notice was that usually when i flash it i see HTC then a progress bar.
This time it was just blank all black but with the progress bar i saw it go all the way to 99% and 100% on my computer it even said successful flash.
But after that it just stayed off?
No reboot ?
NOTHING!
wont charge
wont turn on
no bootloader mode
completely bricked.
im sure the battery is just dead since it wasn't that charged to begin with but i have no way of charging it!
I did a lot of googleing and found no answers i refuse to believe its bricked!
it cant be rite??
If anyone could please help me i would really appreciate it.
Ive only had my HD2 for about a week =[
Oh and it's a T-Mobile US version unlocked.

javydawg said:
On Saturday night i was txting playing beer pong having a good time.
When all of a sudden a black screen came out saying something about how it was goin to restart and reset or something like that and that all my personal info would be gone.
So i did it and once it restarted it just stayed stuck on the boot up screen.
Not thinking twice about it as i was having fun i just put it in my pocket thinking maybe its gonna take a lil longer but then i realized after awhile it was still on that same screen.
I took out the batter turned it on again same thing happened.
I gave up and decided i'd just deal with it the next morning.
Next morning comes its now like around 1-ish crazy party haha
Point is phone is dead i charge it for 30 min? i try turning on and nothing.
So then i boot up pushing both buttons figured i would do a hard reset.
Still nothing!
My friend decides to take me home so i take this time to charge my phone a lil more with his car charger and at first it was charging then out of no where it doesn't charge?
No light?
No boot up?
Nothing?
I take the battery out and back in then plug it into the charger and the light doesn't turn on but my phone just starts vibrating uncontrollably...
This freaks me out so i take the battery out and again same thing.
I took the battery out for a couple minutes then put it back in and it started charging again.
yay!
Oh btw the whole time this happened i was able to get into bootloader mode so i figured it cant be bricked and i can fix it just got to charge it.
I got home battery wasn't that charged but i plugd it in to my computer in bootloader mode hoping it would charge for a bit then i downloaded a new rom and i read it was a good idea to use task29.
Sounded like a great idea to fix my phone.
I got the Repack by ShaDrac and flashed it on my phone.
One strange thing i did notice was that usually when i flash it i see HTC then a progress bar.
This time it was just blank all black but with the progress bar i saw it go all the way to 99% and 100% on my computer it even said successful flash.
But after that it just stayed off?
No reboot ?
NOTHING!
wont charge
wont turn on
no bootloader mode
completely bricked.
im sure the battery is just dead since it wasn't that charged to begin with but i have no way of charging it!
I did a lot of googleing and found no answers i refuse to believe its bricked!
it cant be rite??
If anyone could please help me i would really appreciate it.
Ive only had my HD2 for about a week =[
Oh and it's a T-Mobile US version unlocked.
Click to expand...
Click to collapse
If you have only had it for a week then the best thing is to just take it back to wherever you bought it and ask for a direct replacement as it should still be within the time frame for that.
Sounds like you have done everything possible to bring it back, taking the battery out, hard reset. If it wont turn on, wont go into the bootloader and you cant get an activesync connection then theres not really much more you can do.
Mark.

yea i agree, dont waste time fiddling and trying to bring it back, get round the shop today.

Unfortunately thats not an option as i got it from someone else and then unlocked it since im on at&t. At most i would have to call htc and hope the manufactureres warranty can do something but i highly doubt it.
cant believe this is the end of my HD2

javydawg said:
Unfortunately thats not an option as i got it from someone else and then unlocked it since im on at&t. At most i would have to call htc and hope the manufactureres warranty can do something but i highly doubt it.
cant believe this is the end of my HD2
Click to expand...
Click to collapse
You might try taking the battery out and leaving it out for at least 24 hours. Sometimes that will reset a few things and bring the screen back on but im not guarenteeing anything. Yo uhave nothing to lose at this stage though. You could also try connecting it to your pc via activesync and see if it connects. Even if the screen isnt coming on you might still get a connection which you could use to flash a new rom.
Even getting a replacement battery off ebay very cheaply might sort it out as I have heard of batterys going funny before.
Just a few sugestions.
Mark.

all the phones should (I think) be manufacturer warrantied for the first year, so I bet htc will fix it, though you might have to pay shipping.
dig out your regions htc repair center and get in touch. so long as they can't see the hspl it should be free.(

I dont have HD2 (<--nexus one), but one thing i have noticed with all HTC phones that I've had something similar happen is when i have tired to reboot the phone by turning it off and then trying to turn back on it wont. I would take the battery out and still it will not. I would do the same with the sd card and same but what fixes it is taking the SIM out press the power button few times with no battery and then putting everything back on and it turns on. It happens in a while. Maybe not the same problem but i guess its worth a try if you haven't yet. One more thing I would try is to take the battery out, the sd card and the SIM card out and then plug your phone into the charger and wait a few mins to see if the led or screen would come on. Try the same thing by plugging it to your computer. If computer does make sound and it does detect your phone then it might just a screen related issue which might be the case since you already flash it with a different rom and nothing came on. I know you probably have tried this but you didnt say in your post but have you tried this?
1. With the device turned off, press and hold the VOLUME UP and VOLUME DOWN buttons, then briefly press the POWER button.
2. Continue pressing the VOLUME UP and VOLUME DOWN buttons until you see this message on the screen:
“This operation will delete all your personal data, and reset all settings to the manufacturer default settings. Press VolUp to restore manufacturer defaults, or press other keys to cancel.”
3. Release the VOLUME UP and VOLUME DOWN buttons.
4. Press the VOLUME UP button to perform the hard reset, or press any other button to cancel the reset.
Good luck

I agree with mskip about the 24H thing if you let the internal/backup battery die it could solve a possible brick then by reflashing
also what deanesn said about the HD phones its also true (same prob with G1 and excalibur) sometimes out off nowhere it wont turn on or its just going to give you a black screen... wierd huh!?
important things I wanna know is
what rom where you using? what radio version? what were the last app or apps you installed on your HD2?
anyways from what I've read&done ever since I joined XDA this is the best thing to do in a situation like yours
This is when you get a black screen
1 if its stuck on the boot screen try to do another hard reset
2. if you cant or nothing happeneds try to see if you can acces the bootloader screen
3. if you cant, remove the batterie for like 24H or maybe more so the internal batterie dries out (if you do that make sure that you try to estimate around 50% to 70% before removing the actual batterie for reflashing)
4. then insert the batterie and try to acces the bootloader or hard reset by pressing the key combanations dont try to see if by a miracle chance it would fix the problem (trust me at this point it wont)
5. if it actually DOES bootup find and download THE STOCK ROM FROM TMOBILE
6. HARD reset if nothing then do it agn but before it has a chance to, try to boot up
7. quickly acces the bootloader wipe your phone (task 29 for hd2) and flash the STOCK ROM (not a custom rom. I read somewhere that its always better to go with an official tmo rom)
thats it Ive try many things on my ALMOST bricked situations this are the things Ive done MAYBE IT WONT WORK FOR YOU, one time I thought my excalibur was dead until I left my phone without a batterie for like a weak then later out of nowhere it boots up only on the first tmobile splash screen and I was able to fix it
LOL even tho those steps prob dont apply to you what you can do is call HTC and tell them you have a black screen on your htc DONT TRY AND ACT all smart by telling them you have a brick and you had a custom rom and all of that cause that prob voids your warranty with HTC, from what I've read this one guy told them that his girlfriend was texting and then the phone froze and the she remove the batterie and the screen went black. And he got a replacement
also another one that I read is a guy telling them he was doing an OFFICIAL ROM UPDATE and the phone never turned back on.
hope it helps

Mark:
Thanks, and this is actually my plan lol I used to flash my old motorola rizr all the time even had to testpoint it to bring it back from a complete BRICK! but the one thing i couldnt fix was water damage haha but after a week of having the battery out some how... miraculously it came back
Deanesn:
How is the nexus one? I was gonna get a nexus one or a hd2 but the screen size ended up being the tie breaker although ever since my g1, android has had my heart haha
Ive always hated windows mobile but the hd2 was perfect!
I also agree with what u said, i have seen those symptons before.
But yea thanks on the advice.. sadly... already tried it and nothing.. =/
Tuppaacc:
Thnx thats exactly what im trying to do.
My only problem is my battery is dead and i need to charge it!

Oh i just noticed i forgot to answer ur questions Tuppaacc.
tuppaacc said:
important things I wanna know is
what rom where you using? what radio version? what were the last app or apps you installed on your HD2?
Click to expand...
Click to collapse
I was using Duttys_Leo_Sense_2.5_5.2.21898.5.0.91_2.10_Radio_2.08.50.08.2_HG_V1.7_WWE Rom.
Im not really sure what radio i was using but if i had to guess i would say 2.10 since i dont remember flashing anything else and i heard the best radio was the one the HD2 already came with.
As for the last app installed ummm.... iGo8? not sure either but in total all the apps installed where
My Phone
Marketplace
Facebook
Myspace
iGo8
Aim
Flashlight
Glympse
umm cant think of any other ones. I know i didnt install much just had flashed the rom the night before.
again sorry for skipping your question.

try
try taking sd card out and boot it work for me

Here is what you have to do after I made a mistake and "killed" my US version HD2, but it's back to service.
First of all, you have to be sure the battery has at least 50% left. If the unit is able to charge the battery, leave it charged for a couple of hours.
Second, unplug all the cables from the unit, take the battery and wait for a few seconds, then put the battery back in. Press and hold volume down button and press red (end/power) button once. If everything goes well, you should see a tri-color screen.
Third, plug in the phone and run ROM update again.
WARNING: flashing will erase your personal data.
javydawg said:
Oh i just noticed i forgot to answer ur questions Tuppaacc.
I was using Duttys_Leo_Sense_2.5_5.2.21898.5.0.91_2.10_Radio_2.08.50.08.2_HG_V1.7_WWE Rom.
Im not really sure what radio i was using but if i had to guess i would say 2.10 since i dont remember flashing anything else and i heard the best radio was the one the HD2 already came with.
As for the last app installed ummm.... iGo8? not sure either but in total all the apps installed where
My Phone
Marketplace
Facebook
Myspace
iGo8
Aim
Flashlight
Glympse
umm cant think of any other ones. I know i didnt install much just had flashed the rom the night before.
again sorry for skipping your question.
Click to expand...
Click to collapse

the thing is the phone itself wont charge the battery.
I plug it into the wall and no lights turn on to indicate its charging.

javydawg said:
the thing is the phone itself wont charge the battery.
I plug it into the wall and no lights turn on to indicate its charging.
Click to expand...
Click to collapse
You need to get a desktop charger so you can plug the battery in and make sure its fully charged. I dont think they are available from shops but you can buy them online (ebay) for around a fiver.
http://cgi.ebay.com/Desktop-Battery...&otn=8&po=LVI&ps=63&clkid=9087015918333818927
That one says for the T8585 but im pretty sure they both use exactly the same battery. You might want to check on that though.
Mark.

My goodness, that OP is a real doozie.
That's pretty wild man, although I don't have much input, other than the obvious suggestions that have already been provided for you... I will say that was a worthy read.

Yea thats pretty much my only option I will be buying that desktop charger real sooon and ill get back to the forum with my results.
Cant believe they are so cheap haha
Ive even seen one that comes with an extra OEM battery and charger for under 15 dollars!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230460046498
Thnx for all the help and support. =]

U have a Bricked HD2 my friend

i bought the wall charger and it charged the battery but it still wouldnt turn on or go into bootloader mode or do anything!!
=[
..

any luck with un-bricking your HD2?

Seems like OP bought a damaged phone in the first place or something, or something "happened" on the night of the party. Beer got on it, perhaps?

Bricked/Damaged Phone ??

Hi, i bought an HTC Dream/Google G1/T-Mobile G1. I bought as faulty and asked the guy what did it had. He said he needed to flash and update software. So i bought it thinking that if that's the problem i'd solve it and end up with an Android phone. I paid €50 for it. Thing is i can't do anything to the phone. I plugged the battery, pushed power and it gives the normal vibrate and then nothing, the screen doesn't even light up. I have to take the battery out to power off the phone then. If i plug the USB, it lights the red LED, but no recognition of the phone by the PC, turn it on again...the same.
I've searched the forum, top to bottom, and i've tried almost everything to try and make something out of my beautyfull brick. Keys combination, *.img to SD, haven´t tried throwing it to the wall, but i'm almost there.
If i could even get to bootloader... I have a Diamond and flashed it numerous times and never had a glitch.
Can you guys help out ? Please, i've searched the forum, read almost every post about bricked phones, etc...

Sounds like they may have flashed the wrong firmware file or its physically damaged and they lied to you.
I am pretty sure it needs re-flashed with a jtag interface if it's only a software issue. Because if the recovery image is intact it will still say "t-mobile G1" and be stuck in a boot loop.
Have you tried to start the phone to fastboot mode(hold down the back button and press power), or recovery(hold home and press power) ?
If you can't get into either of those you either need to find someone with a jtag adapter or get your money back because it's dead.

Thanks for the reply.
I tried all of that... . How on earth will i find someone with a jtag adapter, at least in a nearby area... guess i have nice brick then. I read somewhere here on xda of a shop in India that recovers the phone but its way to far for me to send the phone, pay the fix and they send it back!!! Well i guess thats it, i got screwed...

[Q] Defy Won't Boot, Options Exhausted: You Are My Last Resort.

I originally posted this over on the MotorolaDefy.com forums, but it seems to be pretty dead, so I'm going to quote over my post and then update it with what I have tried since.
Generally, I don't like to post on forums asking for assistance, I know how many repeat problems you guys probably have to read, but I don't know what else to do at this point. I've had my Defy running Cyanogen Mod for months, and earlier today I noticed the Wifi wasn't connecting properly, so I rebooted it. Lo and behold, it became stuck at the Cyanogen Mod screen, it might have something to do with me installing BusyBox earlier in the day. In anycase, I followed this guide: (link removed, since this is my first post - not really important since I figured out the McGyver trick) to attempt to fix the problem. Now the phone won't boot at all, I can't even get to the boot loader screen. RSD Lite still recognizes the phone when it is plugged in, and the white light still comes on when it is charging. I'm scared ****less to take any further actions without input from somebody with more experience. I have to head out to work now, but I wanted to post this before I left. If anybody has a solution to my problem (and I'd be grateful), then I'll attempt it in a few hours. All I'm trying to do is reset it to factory default so that I may reload Cyanogen Mod onto it. The phone worked beautifully up until this point. I am on Telus and I live in Canada, if that is at all relevant. Thanks!
Click to expand...
Click to collapse
So, since then, I've gotten my screen working again, I had to use the McGyver trick (gypsy-rigged usb cable to the contacts of the battery) to jump start the bootloader, and I managed to flash in the Froyo 2.2, 3.4.2-179 sbf. It ran! Thank god in heaven! But... it got stuck at the T-Mobile logo consistently. Next, I tried flashing in Froyo 2.2, 3.4.2-177 sbf. Again, it miraculously boots but it hangs at the pulsing Motorola logo.
That brings me to where I am currently, which is; I have absolutely no idea what to do next. All I want is to get my Defy up and running with a stable version of Cyanogen Mod again. It ran flawlessly before and I loved my phone, best phone I've ever had. I'm stressing out pretty hard, and I've tried all I can find on the internet. Please, XDA, help me!
Edit: I doubt this is relevant, but more information can't hurt, so I'll add that my Defy is one of the newer ones with the red-lense.

Have you remembered to wipe data and cache (factory reset) in stock recovery?^^
If you still have that data from when you ran cm7, and you're trying to boot stock, it could prevent you from booting! Happened to me once and i just couldn't see what the problem was! Really annoying.

That sounds like it could be the issue, you're supposed to be able to do that by holding volume down while powering it up, correct? Because that doesn't seem to do anything for me.

Not working? Strange. Hold volume down before pressing power button and keep it pressed untill you se a warning triangle. Then hit both volume keys to enter the recovery. Still not working?

Sorry, I should have been more specific, I can get to the little Android guy and exclamation mark, but when I touch the bottom right corner, no menu comes up. I've never actually had to access the stock recovery before, Cyanogen made it so simple. Am I supposed to be doing something other than tapping the screen?

Update: Google is my friend. I found a suggestion that I hit the up and down volume buttons at the same time, and the menu appeared! I wiped the cache and all the use data (important stuff is on a memory card anyway, I'll just have to get my contacts back). I did get an error, reading: "E:Can't mount CACHE:recovery/log". I rebooted the system regardless and IT BOOTED!
Thanks for pointing me down the right path, I owe you and this forum a great debt!
I'm now going to charge this bad boy back to full before I attempt to reload Cyanogen. (Since having wires hang out the back is starting to get old.)

I managed to short out something doing the McGyver trick, because I'm getting the question mark battery problem. Hopefully it's an issue with the battery and not the phone. I'm incredibly disappointed, the phone is fairly new and I loved it, and don't have the money to drop replacing it since there are more urgent things to attend to. I guess all I can do is hope for the best.
As of now, it won't even boot. I'm going to try the battery in a friends phone and his in mine to try to identify the problem.

Lunk23 said:
I'm going to try the battery in a friends phone and his in mine to try to identify the problem.
Click to expand...
Click to collapse
I always recommend THIS solution over the McGyver method. Defy is farely often owned phone, so guys... first of all, don't let the battery drain completely; second - if this happens, don't rush into jump starting it. Try all other options first, ask somebody to recharge your battery and don't do McGyver, unless you've run out of other options.
Now try connecting your phone to the wall charger and don't try to start it for at least an hour. I've had plenty of cases when brand new Defy, Defy+ or Atrix, that have never been rooted, leave alone jump started, show the battery with "?" in it when battery drains completely and takes some thirty minutes or so of charging until the phone is able to start again.
Good luck, my friend!

I had made this. .... just in case it can help you
http://forum.xda-developers.com/showthread.php?t=1551472

LG G2 D802 - Power Button Problem

Hey everyone,
First of all thank you for taking a look in my thread, this is my second post here in this forum but, I just have to tell you guys, I've been around since 2012 and you guys rock!
Anyway enough of chit chat, so I had my phone pretty much hard bricked, thanks to some tutorials I've finally found a way to get it back to life BUT ( there's always a but ), it isn't like before, everything was working very nicely after the fix, the Power button stopped working, the volume rockers are still fully functional but the power button isn't. So I thought "f*ck this, I gotta buy a new flex assembly", that's what I did, it arrived today, so I got to work and put it all together with the new button, but for my surprise it is EXACTLY de same as before, so it seems like it has nothing to do with the flex assembly/buttons itself but something more like motherboard or something..
Have any one of you guys had this issue? By the way another very interesting thing is that the buttton "still gives signal" since if I press on it, it doesn't do anything even with the phone off BUT, if I have the phone turned on, and I press it for 5+ seconds , it shutdowns the phone as it should! So why isn't it working when I do a press, but if I hold it works?
By the way my phone when died even the partition table got corrupted, so I even had to redo that could it have anything to do with it?
Oh and the basic tips of putting the phone in Download Mode and fully revert to stock didn't work, already did it many times since I brought it back to like..
Regards, and thank you for reading this LONG post and spending your time with me :silly:

Anyone got any clue please?..

SlashPT09 said:
Anyone got any clue please?..
Click to expand...
Click to collapse
Hi, i has been a long time until you wrote this topic, but now, in 2018, i got the same problem that you.
I bricked the phone, unbricked with some xda's tutorials, install a kdz image and system got ok, but the damn power button not work.
It work on a very specific moment that is when the phone is on and i press the button, after 5 seconds the phone turn off, but none menu appears, it just turn off. Besides, it won't work to turn on the device. In this case, i aways need to put the cable and when the LG log appears I must remove (if not, the battery symbol is shown, and the device not turn on).
I wonder if you were able to fix your phone or someone of xda had this problem.
Thanks

Nope never got it fixed just moved on and bought another device, besides that is now a outdated device..

Is my Note 4 dead?

Hello dear community,
I'm posting there because I have some doubts about my phone and i'd like some answers from you.
1 month ago, I was charging my phone. When it reached 100% battery, It was fine but the problem is when I was trying to press "power" to turn it on but It didn't want to. So, I removed the battery because I couldn't even turn it off. When I tried to restart it again, it didn't want to. No reaction to the "power" button.
I followed EVERY tips on Google but none worked. I also tried to change my battery but nothing. I tried also to connect it to my computer, it was detected but my phone didn't turn on.
So, I guess my phone is dead unless if there is a solution to make it working? Also before that, my phone was becoming very laggy and when it had a small lag, it was turning off and was rebooting.
Thank you in advance for your answers.

CSM Fol said:
I have mustered some conclusions about your phone based on what you typed:
1st claim: The power button no longer works anymore
•Reason: "... when I was trying to press "power" to turn it on... it didn't want to... When I tried to restart it again, it didn't want to. No reaction to the "power" button."
—Seems like you're gonna have to find another Note 4 and replace its motherboard with the Note 4 whose power button doesn't work anymore after 5 years.
But before spending, I would like you to try this method from a Youtube comment:
"... you'll just have to keep the charger [cable connected] on [your phone] while you take off the battery, and put it back after; then, remove the charger quickly..."
—————
2nd claim: The screen no longer works
•Reason: "I tried also to connect it to my computer, it was detected but my phone didn't turn on."
—If the phone is charged, seeing nothing but blackness, but you still see an emitting LED light on the top-left corner, that's a sign that it still works, just not the screen. So I would suggest that you buy a new screen and replace it with your old one. If you think you can't, then go to a phone repair shop and let others do the repairing.
—————
3rd claim: The motherboard is dead
•Reason: "... before that, my phone was becoming very laggy and when it had a small lag, it was turning off and was rebooting."
—The motherboard might be dead if these are happening, but I don't think this is the right reason unless the first two conclusions are proven to be true. If the first two conclusions are proven to be false, then the motherboard is dead, and you may either buy another Note 4 motherboard or get a new phone.
Click to expand...
Click to collapse
Thank you for your answer.
To answer you clearly about all the points you clarified, there is no led light appearing when putting it on charge and I also tried the "Youtube comment" but nothing.
So I think, the motherboard is dead as you mentioned. I just don't understand how it died after a charge but as I saw on Google, it's a general problem on Galaxy Note 4, so I think i'm not surprised at all. It's been since 2015 I had it.
Thank you for your time and to have solved my doubts about the death about my phone.

xSLOom said:
Hello dear community,
I'm posting there because I have some doubts about my phone and i'd like some answers from you.
1 month ago, I was charging my phone. When it reached 100% battery, It was fine but the problem is when I was trying to press "power" to turn it on but It didn't want to. So, I removed the battery because I couldn't even turn it off. When I tried to restart it again, it didn't want to. No reaction to the "power" button.
I followed EVERY tips on Google but none worked. I also tried to change my battery but nothing. I tried also to connect it to my computer, it was detected but my phone didn't turn on.
So, I guess my phone is dead unless if there is a solution to make it working? Also before that, my phone was becoming very laggy and when it had a small lag, it was turning off and was rebooting.
Thank you in advance for your answers.
Click to expand...
Click to collapse
Put in cold fridge for 30 min without battery, then try to turn it on. If not, try the cardboard method under the emmc chip (search youtube)

Timpaa said:
Put in cold fridge for 30 min without battery, then try to turn it on. If not, try the cardboard method under the emmc chip (search youtube)
Click to expand...
Click to collapse
Is this a serious thing ? (fridge)

I did the oven trick on my n910t. I left my phone stuck in the grill of my truck when I changed the brakes. I took it for a test drive and ended up running over the phone. Me being a noob at the time didn't know the AT&T Note 4 would not unlock Bootloader for custom roms or custom recoveries. I purchased the AT&T Note and was sorely disappointed there after. Flash 2019 I still have the motherboard for my note that I ran over. I can only get in to go into download mode and only when it was plugged in. I flash custom ROM or custom recovery and it would say would pass but it would just boot loop and boot loop. So I read somewhere where you can put it in the oven for around 5 to 6 minutes at about 200° and that it would settle any of the cracked solder that be around the emmc or anywhere else on the board. So I tried it. I stuck it in two different times at five minutes a piece, pull the board out and let it set for a day. I installed the board just a little while ago and she fired right up. It's amazing

I've recently replaced the motherboard on my N910F with a used one bought from AliExpress. As it's used I've no idea how long it will last but for £30 was worth a try.
It was pretty straightforward replacing the motherboard using one of the tear down guides on YouTube.