Urgent Help: Screen flicker in refurbished h818n - G4 Q&A, Help & Troubleshooting

Got h818n in august and motherboard was replaced in january due to crashing. Earlier this march, screen was flickering and hence qas replced completely by service center. But yet again facing this issue. Also made a video of it but dont know how to upload it here.
Need help/ suggestions what to do further.
Please!

I had the same problem but mine was new h815. I sent it to repair at LG and they changed my motherboard. I had sn505, now I'm on sn602. What is your serial number? Is not the screen, it's motherboard's faulty connection with the screen

johnxarma said:
I had the same problem but mine was new h815. I sent it to repair at LG and they changed my motherboard. I had sn505, now I'm on sn602. What is your serial number? Is not the screen, it's motherboard's faulty connection with the screen
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How to check it?
Mine was a new phone as well. Refurbished as in motherboard and complete display is changed.

Mine is brand new, month old and i saw flickering two times already just for 2-3 seconds. S/N 602.
.

clotveins said:
How to check it?
Mine was a new phone as well. Refurbished as in motherboard and complete display is changed.
Click to expand...
Click to collapse
Remove the battery and there is a sticker there. Then you'll see the s/n. Tell me your first 3 numbers
Sent from my LG-H815

Related

[Q] Motherboard swap - IMEI didn't change

Hi everyone!
I've an HOX bought from carrier Vodafone Hungary. I noticed the battery slightly bulging, it also damaged the back of it a little. Barely noticeable, no performance issues whatsoever, but since it was almost 12 months old, I had it sent to the service center, where they replaced the motherboard, along with the battery and the back cover.
Today it came back to my possession, and it seems like the IMEI didn't change. I thought it should, and that way the warranty would restart.
Could anyone tell me please what's the case? Should the IMEI change? Did my warranty restart?
Thank you in advance!
I had my motherboard replaced 3 times and the imei changed every time so i guess it should have changed.
In Germany the warranty would not restart. Since Hungary is in the EU i guess it is similar.
Sent from my HTC One X using xda app-developers app
my motherboard was replaced once, the imei didnt change but the device serial number did.

Anyone here bought a lg g4 from tropical mobile, ebay?

Hi, yesterday i order the LG G4 on ebay from a seller called tropical mobile from singapur, what i wanna know if someone here buy one from them and wich serial number you have 505-509 or higher and if you buy it from him and you have any model between 505-510 did you experienced any problems like sudden death or the constant lg bootloop?
Sorry if my english is bad
go for higher serial number even in s/n 60's there has been reported bootloop issue so ur not safe even in the newer ones buy any other branded phone like samsung dont buy LG but u if got heart for it go for refurbished one those who are already had motherboard replaced n still under warranty by LG cuz even if motherboard is replaced ur phone still could bootloop ...unlocking the bootloader on a repaired G4 is a whole lot different issue also and yes there has been reported bootloop issue is 505-510
JuanS90 said:
Hi, yesterday i order the LG G4 on ebay from a seller called tropical mobile from singapur, what i wanna know if someone here buy one from them and wich serial number you have 505-509 or higher and if you buy it from him and you have any model between 505-510 did you experienced any problems like sudden death or the constant lg bootloop?
Sorry if my english is bad
Click to expand...
Click to collapse
http://forum.xda-developers.com/g4/general/tropicalmobile-ebay-heres-expect-inside-t3125727
jinderation said:
go for higher serial number even in s/n 60's there has been reported bootloop issue so ur not safe even in the newer ones buy any other branded phone like samsung dont buy LG but u if got heart for it go for refurbished one those who are already had motherboard replaced n still under warranty by LG cuz even if motherboard is replaced ur phone still could bootloop ...unlocking the bootloader on a repaired G4 is a whole lot different issue also and yes there has been reported bootloop issue is 505-510
Click to expand...
Click to collapse
Yes i know but if ots possible i just want to know the experience of someone who bought it there for security

warranty after service applied

Hello , When you send a lg phone for service with issue in motherboard(aka bootloop issue) and they replace it.Service guys associate the new imei and serial number with the old ones ? So if 2 year warranty is over but the new mainboard is much newer, in case of another issue ,for example screen flickering,could we send to it another service center and just don't tell them that the mainboard is replaced?
thanos1916 said:
Hello , When you send a lg phone for service with issue in motherboard(aka bootloop issue) and they replace it.Service guys associate the new imei and serial number with the old ones. So if 2 year warranty is over but the new mainboard is much newer, in case of another issue ,for example screen flickering,could we send to it another service center and just don't tell them that the mainboard is replaced?
Click to expand...
Click to collapse
If im not mistaken it should be from the time they send it back the waranty should basicly be reset. Again if im not mistaken
There have been users send there g4 in multiple times over the last couple years. And ive never heard anyone complain of that.
To make things more clear,
Does service keep record globally to lg the mainboard replacement? So can I claim warranty for screen if passed 2 years from the day I bought it but the replaced mainboard serial number says that I have warranty till August of 2018?Maybe somewhere else from the service shop where I sent it for the bootloop issue because they will not know that mainboard is replaced.
Thanks.
thanos1916 said:
To make things more clear,
Does service keep record globally to lg the mainboard replacement? So can I claim warranty for screen if passed 2 years from the day I bought it but the replaced mainboard serial number says that I have warranty till August of 2018?Maybe somewhere else from the service shop where I sent it for the bootloop issue because they will not know that mainboard is replaced.
Thanks.
Click to expand...
Click to collapse
Ill thank that response. That is a very good ? I would like to know that myself.
I was always under the assumption tbat yes any time u send a device in on a waranty and a poce with any kind of serial nums gets replaced the new serial is the new waranty date. I dont think the old imeis are any good any more as people with locked bootloader try to use old unlock bins. Have to update theyre device id and imei with lgs unlock site as their old ones arent reconized any more after mb replacement.
TheMadScientist420 said:
If im not mistaken it should be from the time they send it back the waranty should basicly be reset. Again if im not mistaken
There have been users send there g4 in multiple times over the last couple years. And ive never heard anyone complain of that.
Click to expand...
Click to collapse
thanos1916 said:
To make things more clear,
Does service keep record globally to lg the mainboard replacement? So can I claim warranty for screen if passed 2 years from the day I bought it but the replaced mainboard serial number says that I have warranty till August of 2018?Maybe somewhere else from the service shop where I sent it for the bootloop issue because they will not know that mainboard is replaced.
Thanks.
Click to expand...
Click to collapse
No. Your warranty will not extend to "forever" (if we assume you have a repair once a year.. ) or being reset just because something get replaced. I can speak for Europe only but I don't believe that any other country will do it different. Normally all vendors record the device warranty globally because if not they would loose many money. I say I don't believe but only LG knows for sure.
The bootloop issue is another story. This gets even repaired when outside of warranty e.g. in the USA due to the signed law suit. That's why this is not an issue for the most people.
.
Sent from my LG-H815 using XDA Labs

Shouldn't the phone's serial number change after a LG bootloop repair?

My almost 2 year old rooted H810 506 finally bootlooped. Lg repaired it for free which is great. Of course it came back with the latest 22f Marshmallow which can't be rooted or downgraded, but I expected that.
LG said they replaced the main board and the logic board. What surprised me was that the phone came back with the same 506... serial number. Isn't the serial number supposed to change when the main board is replaced?
Does the fact that the serial didn't change mean LG repaired rather than replaced the board?
yeswap said:
My almost 2 year old rooted H810 506 finally bootlooped. Lg repaired it for free which is great. Of course it came back with the latest 22f Marshmallow which can't be rooted or downgraded, but I expected that.
LG said they replaced the main board and the logic board. What surprised me was that the phone came back with the same 506... serial number. Isn't the serial number supposed to change when the main board is replaced?
Does the fact that the serial didn't change mean LG repaired rather than replaced the board?
Click to expand...
Click to collapse
New motherboard should also have a new serial number which is suppose to be under the battery.
Mine was replaced a month ago due to boot loop and phone have a new sn starting with 705. I've investigated a bit, and mboard is actually produced in second week of may 2017.
So, I would find some app to get all the info about the hardware. It is possible that at LG they simply haven't replaced sticker with serial number

What to Expect when I get LG Warranty Swapped Board for Bootloop?

Hi,
My ATT H810 LG G4 bootlooped long ago and I was told I was out of luck as the original warranty ran. Since the arbitration forced the warranty to be extended to 30 months in the US, I sent it to LG Fort Worth and they are sending it back with a "Replaced board" for the BS reason "Unit is not charging with cable" (they don't want to document a bootloop problem).
Anyway, I have a few questions while I wait to get it back:
Are they just putting in boards which will eventually bootloop or did they ever implement a hardware fix? Which Serial Numbers are "fixed?"
Relatedly, what I sent in was a 506 serial number. I understand that they may simply reflash the board to that old SN and IMEI and the old sticker will be the same. Is there a way to check what the actual new SN is to see if it's from a "good" batch?
They told me that the 30 month warranty for me was up on March 1, so I just slid under the bar. Is there a new warranty on the repair? If not, is there a stress application to try and force it to bootloop again before March 1? Maybe it's pointless if they're just putting boards into it which are bound to fail...
I know that these points have been covered over the years, but I really can't figure out the current information.
Many thanks in advance!
smileyspeople said:
Hi,
My ATT H810 LG G4 bootlooped long ago and I was told I was out of luck as the original warranty ran. Since the arbitration forced the warranty to be extended to 30 months in the US, I sent it to LG Fort Worth and they are sending it back with a "Replaced board" for the BS reason "Unit is not charging with cable" (they don't want to document a bootloop problem).
Anyway, I have a few questions while I wait to get it back:
Are they just putting in boards which will eventually bootloop or did they ever implement a hardware fix? Which Serial Numbers are "fixed?"
Relatedly, what I sent in was a 506 serial number. I understand that they may simply reflash the board to that old SN and IMEI and the old sticker will be the same. Is there a way to check what the actual new SN is to see if it's from a "good" batch?
They told me that the 30 month warranty for me was up on March 1, so I just slid under the bar. Is there a new warranty on the repair? If not, is there a stress application to try and force it to bootloop again before March 1? Maybe it's pointless if they're just putting boards into it which are bound to fail...
I know that these points have been covered over the years, but I really can't figure out the current information.
Many thanks in advance!
Click to expand...
Click to collapse
In terms of your board, if they replaced the board, it will have a new IMEI and serial number (mine did when the replaced it, ironically to fix screen image retention, so afterwards it had to go back again anyway)
ThePiGuy said:
In terms of your board, if they replaced the board, it will have a new IMEI and serial number (mine did when the replaced it, ironically to fix screen image retention, so afterwards it had to go back again anyway)
Click to expand...
Click to collapse
If anybody reads this in the future, just a quick note about what they did in the end. They sent it back after "Replaced board" for the BS reason "Unit is not charging with cable". It failed after about 30 minutes of use, would not restart, and would not take a hard reset.
So, I sent it back (the repair has a 90 day warranty). This time, they listed it as "Symptom: Not powering up Repair: Replaced board". So far it's been working fine after this second repair.
Note that the IMEI and S/N (506) stayed the same after both repairs.

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