Hi all, I've searched the forum thoroughly but didn't find an answer:
Two months ago I was hit by the above problem, too - no USB (nor in bootloader) & discharge current from 190 (everything off) upto 400+ mAh. I tried to swap cables, PCs, ROMs (from Energy to stockROM, forth and back)... nothing helped... SERIAL only.
Of course I cant' get the orig SPL back so sending to warranty repair isn't too probable (if I don't want to pay a new phone's price for just swapping the MB )
I hesitate to accept that it is a SW problem (that the NRGZ's ROM rewrited something or caused a HW fault). So, hasn't anybody found a solution? Isn't it possible somehow to revert the bootloader without USB? Or, could it be really a _faulty_USB_connector_ and I've got a bad luck simply??
Thanks, Michael
medved.m said:
Hi all, I've searched the forum thoroughly but didn't find an answer:
Two months ago I was hit by the above problem, too - no USB (nor in bootloader) & discharge current from 190 (everything off) upto 400+ mAh. I tried to swap cables, PCs, ROMs (from Energy to stockROM, forth and back)... nothing helped... SERIAL only.
Of course I cant' get the orig SPL back so sending to warranty repair isn't too probable (if I don't want to pay a new phone's price for just swapping the MB )
I hesitate to accept that it is a SW problem (that the NRGZ's ROM rewrited something or caused a HW fault). So, hasn't anybody found a solution? Isn't it possible somehow to revert the bootloader without USB? Or, could it be really a _faulty_USB_connector_ and I've got a bad luck simply??
Thanks, Michael
Click to expand...
Click to collapse
Take a magnifying glass and check the USB port. Some people have found that some of the pins get bent over. If so, you may be able to carefully bend it back straight. Having a bent pin might explain the power drain as well as no USB.
3 weeks ago, my usb wasnt working. I couldnt connect with pc, but charging worked.
I have sent the device to htc, and they replaced the motherboard..
freaknormel said:
... I have sent the device to htc, and they replaced the motherboard..
Click to expand...
Click to collapse
Yes you're probably right that that could be the best solution.
Nevertheless, in this case I can't revert the bootloader (SSPL) so I would have to pay the new MB (more than half a new TP2's price)
medved.m said:
Yes you're probably right that that could be the best solution.
Nevertheless, in this case I can't revert the bootloader (SSPL) so I would have to pay the new MB (more than half a new TP2's price)
Click to expand...
Click to collapse
You can't? There are instructions on the ROM burning forum for returning it to stock SPL.
I have a stock samsung tmobile s4 & I was having problem with the charging port so I took the charging port out and tried a different port & put everything back together now the phone charges but the digitizer stop responding the bottom buttons are still functioning & I am sure there is nothing with the digitizer itself I have also clean the cache factory reset everything and also used Odin to flash the stock rom again but non of these seems to solve the problem so any advice or solution will be greatly appreciated
Jamil313 said:
I have a stock samsung tmobile s4 & I was having problem with the charging port so I took the charging port out and tried a different port & put everything back together now the phone charges but the digitizer stop responding the bottom buttons are still functioning & I am sure there is nothing with the digitizer itself I have also clean the cache factory reset everything and also used Odin to flash the stock rom again but non of these seems to solve the problem so any advice or solution will be greatly appreciated
Click to expand...
Click to collapse
You probably disconnected the digitizer when you took apart your device
Sent from my SGH-M919 using XDA Free mobile app
Maybe you broke your digitizer when you took it apart. ???
Pp.
No I didn't everything is connected properly I triple checked the connections I also tried another screen from my other s4 and it still doesn't work & also put the massed up one on my working s4 and the screen works perfectly so I'm thinking what could be the problem
It could be an issue with the motherboard.
Did you do any soldering?
Pp.
PanchoPlanet said:
It could be an issue with the motherboard.
Did you do any soldering?
Pp.
Click to expand...
Click to collapse
That's my first thought. Somehow the board got damaged during the repair.
Its the only reason 2 working parts would fail in the same way when installed on your device
Skipjacks said:
That's my first thought. Somehow the board got damaged during the repair.
Its the only reason 2 working parts would fail in the same way when installed on your device
Click to expand...
Click to collapse
I didn't touch anything else other than disconnecting n connectin the digitizer & the chargin port so I'm not sure how would the motherboard get damaged
I have two pieces of ZF2 ZE551ML at home. One is my and the other one belongs to my wife. My wife's phone had a broken mini USB port - the first 2 pins from the left were visible - the plastic had broken apart. Firstly, I did not relaise it could be the problem, luckily I managed to change the whole PCB including the broken USB port, however after this change the phone is not being detected by a PC, nor it is fast charging. As I have two phones at home, I checked performance with the other unit and unfortunately, the other one does quick charge and is detected by aPC, so it is not the cable, neither is it the missing software.
I bought another PCB and changed it as well, however still no joy. Does anyone have any brilliant idea how to fix it. I should also say that all other or most of the functions of the phone are working fine (at least those I managed to check: GPS, Wi-Fi, GSM+dual SIM, torch, bluetooth, and so on).
The only problem is that the phone loops on the SMMI Test #1 and is not going any further. I have also tried to detect phone by adb, still no joy. The phone is not rooted!
I have my personal suspects that it could be the faulty main board or a software bug. Any ideas how to fix it?
My phone is running LP 5.0, soft: LRX21V.WW-ASUS_Z00A-2.20.40.198_20160930_8756_user044030427_201501060109, kernel [email protected] #1 Fri Sept 30 15:31>23 CST 2016
Sdcard slot is working?
I would check the connections on both ends of the flex cable with the sim and sd slots on it.
I am having the same problems (because of the busted sd slot). I ordered a new flex cable. When it arrives (approx. 2 weeks) I'll know if that was the cause.
Yes, SD slot is working and both SIMs, so the phone itself works fine, only very long charging and is not detected by a PC.
Mattiii said:
I have two pieces of ZF2 ZE551ML at home. One is my and the other one belongs to my wife. My wife's phone had a broken mini USB port - the first 2 pins from the left were visible - the plastic had broken apart. Firstly, I did not relaise it could be the problem, luckily I managed to change the whole PCB including the broken USB port, however after this change the phone is not being detected by a PC, nor it is fast charging. As I have two phones at home, I checked performance with the other unit and unfortunately, the other one does quick charge and is detected by aPC, so it is not the cable, neither is it the missing software.
I bought another PCB and changed it as well, however still no joy. Does anyone have any brilliant idea how to fix it. I should also say that all other or most of the functions of the phone are working fine (at least those I managed to check: GPS, Wi-Fi, GSM+dual SIM, torch, bluetooth, and so on).
The only problem is that the phone loops on the SMMI Test #1 and is not going any further. I have also tried to detect phone by adb, still no joy. The phone is not rooted!
I have my personal suspects that it could be the faulty main board or a software bug. Any ideas how to fix it?
My phone is running LP 5.0, soft: LRX21V.WW-ASUS_Z00A-2.20.40.198_20160930_8756_user044030427_201501060109, kernel 3.10[email protected] #1 Fri Sept 30 15:31>23 CST 2016
Click to expand...
Click to collapse
may be the pcb you changed is for different version. try replacing it with your other phone if you have the same model. post if works.
sukhwant717 said:
may be the pcb you changed is for different version. try replacing it with your other phone if you have the same model. post if works.
Click to expand...
Click to collapse
Hi, I did changed both PCBs between phones. Firstly, I had the same problem on both phones, then I made better connections and the batteries started to warm up. Finally, the new one works with the other phone, the old one from the other phone still creates the problem. Probably, it is not the PCB then, or USB connection. It must be something else.
Anyone, any idea?
Mattiii said:
Hi, I did changed both PCBs between phones. Firstly, I had the same problem on both phones, then I made better connections and the batteries started to warm up. Finally, the new one works with the other phone, the old one from the other phone still creates the problem. Probably, it is not the PCB then, or USB connection. It must be something else.
Anyone, any idea?
Click to expand...
Click to collapse
try fashing raw firmware
on motherboard you can inspect or clean the connector where pcb connects. use magnifying glass to inspect connector
Ok, I actually would like to flash the raw firmware, however I need some guidance here, as the phone that has a problem, is not rooted, and it cannot be detected by any PC now, so I am stuck in the middle and do not know how to proceed...
sukhwant717 said:
try fashing raw firmware
on motherboard you can inspect or clean the connector where pcb connects. use magnifying glass to inspect connector
Click to expand...
Click to collapse
Ok, I actually would like to flash the raw firmware, however I need some guidance here, as the phone that has a problem, is not rooted, and it cannot be detected by any PC now, so I am stuck in the middle and do not know how to proceed...
and the connectors are clean
Mattiii said:
Ok, I actually would like to flash the raw firmware, however I need some guidance here, as the phone that has a problem, is not rooted, and it cannot be detected by any PC now, so I am stuck in the middle and do not know how to proceed...
and the connectors are clean
Click to expand...
Click to collapse
i am little confused here... you changed pcb on one mobile and fast charger do not works on that. you have other mobile which is working perfectly. both are same model.... if right!! do the following thing to find out...
Phone A:- changed PCB. no fast charge, not detected by pc.
Phone B:- working perfectly normal..
now we want to guess if pcb is faulty or there is issue with flex cable or any software related issue..
remove motherboard from phone A. and install it in Phone B.. if on Phone B. things works well then definitely its problem related to pcb.. if things don't works on phone B too. then it may be a firmware related problem..
raw cannot be installed without pc..... the thing you can ty is updating firmware from sd card via recovery mode.
sukhwant717 said:
i am little confused here... you changed pcb on one mobile and fast charger do not works on that. you have other mobile which is working perfectly. both are same model.... if right!! do the following thing to find out...
Phone A:- changed PCB. no fast charge, not detected by pc.
Phone B:- working perfectly normal..
now we want to guess if pcb is faulty or there is issue with flex cable or any software related issue..
remove motherboard from phone A. and install it in Phone B.. if on Phone B. things works well then definitely its problem related to pcb.. if things don't works on phone B too. then it may be a firmware related problem..
raw cannot be installed without pc..... the thing you can ty is updating firmware from sd card via recovery mode.
Click to expand...
Click to collapse
That is correct, I say it again - I have two phones, same model, same software, kernel, etc. One had a damaged mini USB port, so I purchased 2 PCBs which have mini USB port souldered onto them. I bought them twice, as I was not sure if the first one I got was the correct one. Now, after your first message I changed the PCBs between phones and the result is the same, phone A (which is ok) works with the replacement PCB, and the PCB from working phone still does not work with phone B (the one that has a problem).
As a second step I replaced motherboards between phones now, and the result is still the same, meaning the motherboard from phone B does not seem to work better while it is in phone A body. The symptoms I'm struggling with are: charging takes over 8-9 hours, so it is considerably extended charging (battery is original factory battery 3000 mAh), the phone does not fastcharge at all and it is not detected by any PC.
The phone is not roooted so, I'm afraid I cannot make any changes to firmware through recovery, as it needs to be connected by a cable to a PC, unless there is something else I can do about it, but how to get any further?
Mattiii said:
That is correct, I say it again - I have two phones, same model, same software, kernel, etc. One had a damaged mini USB port, so I purchased 2 PCBs which have mini USB port souldered onto them. I bought them twice, as I was not sure if the first one I got was the correct one. Now, after your first message I changed the PCBs between phones and the result is the same, phone A (which is ok) works with the replacement PCB, and the PCB from working phone still does not work with phone B (the one that has a problem).
As a second step I replaced motherboards between phones now, and the result is still the same, meaning the motherboard from phone B does not seem to work better while it is in phone A body. The symptoms I'm struggling with are: charging takes over 8-9 hours, so it is considerably extended charging (battery is original factory battery 3000 mAh), the phone does not fastcharge at all and it is not detected by any PC.
The phone is not roooted so, I'm afraid I cannot make any changes to firmware through recovery, as it needs to be connected by a cable to a PC, unless there is something else I can do about it, but how to get any further?
Click to expand...
Click to collapse
which firmware you are currently on? lolipop or MM? factory reset your device then apply latest lolipop update from sd card
sukhwant717 said:
which firmware you are currently on? lolipop or MM? factory reset your device then apply latest lolipop update from sd card
Click to expand...
Click to collapse
I was on lolipop, updated to MM now, but still no joy, charges very slowly like before and when connected to any PC it says one of the recently connected devices is not working properly, so I'm stuck ... I cannot root or apply any ADB sideloads ...
Mattiii said:
I was on lolipop, updated to MM now, but still no joy, charges very slowly like before and when connected to any PC it says one of the recently connected devices is not working properly, so I'm stuck ... I cannot root or apply any ADB sideloads ...
Click to expand...
Click to collapse
Is your ext. sd being seen in file manager ?
Can you get into 6.0 recovery ?
If yes , you can now downgrade which will reset your fone , With a factory reset in the process , check my signature below.
Your fone not being seen maybe driver issue if other zens too are not being seen...but ..let's see what happens after downgrade.
After downgrade if still slow charge, reboot while connected to charger.
If same prob ..hardware !
sukhwant717 said:
which firmware you are currently on? lolipop or MM? factory reset your device then apply latest lolipop update from sd card
Click to expand...
Click to collapse
timbernot said:
Is your ext. sd being seen in file manager ?
Can you get into 6.0 recovery ?
If yes , you can now downgrade which will reset your fone , With a factory reset in the process , check my signature below.
Your fone not being seen maybe driver issue if other zens too are not being seen...but ..let's see what happens after downgrade.
After downgrade if still slow charge, reboot while connected to charger.
If same prob ..hardware !
Click to expand...
Click to collapse
Thanks, I was not so deeply checking all available options. SD downgrading worked well for me, however the problem still is in the phone. However, I discovered a few positive and negative signs, which tell me that there is something else - could be the connection - after upgrading to MM before the phone was restarted at least 3-4 times the screen was not going to sleep mode after a minute, it was coming back on and on and on again. After 3-4 restarts it behaved normally again. The same thing happened after downgrade to L.
Another positive discovery is that the SMMI test now works well and everything is ok now, before it got stuck on the 1st or 2nd test and was not going any further ....
One more spot, which was very hard to catch as it popped up for a 0,1 second but dissappeared then quickly so I had to record it with the other phone and play very slowly on the PC - it looks like the Asus cover window pops up and it says - move your finger around the circle to get quick access to your preferable apps and there is also a blue button: Do not show again . This is flashing now and then and I do not have Asus Cover, so the behaviour is quite odd to me.
I have a feeling that there might be something with connections, but really I do not know what else - I checked it 30 times and made sure everything was properly alligned and tight when I was changing the PCB with micro USB port.
By the way the other phone works well on PCs, so I must have all drivers installed, it is just the second phone that is half bricked... I'm wondering now if maybe flashing CM 12 or 13 will help, however as it is not rooted probably it will not work via SD card... or? Am I looking in the right direction?
Buddy , its hardware so software tweaks will be useless .
Buddy, we are on the same ****ing boat.
I tried to go back to 6.0,but i got my phone bricked and now i cant reverse it back because i need usb connection to the computer and simply it isnt recognized.
I suggest you to send the phone to the asus assistance centre or to buy a new usb port for your phone,as it is clearly damaged like mine.I need to do it too so if you want to wait me first so i can check if it works,ill maybe save you some money.
RxDave said:
Buddy, we are on the same ****ing boat.
I tried to go back to 6.0,but i got my phone bricked and now i cant reverse it back because i need usb connection to the computer and simply it isnt recognized.
I suggest you to send the phone to the asus assistance centre or to buy a new usb port for your phone,as it is clearly damaged like mine.I need to do it too so if you want to wait me first so i can check if it works,ill maybe save you some money.
Click to expand...
Click to collapse
Well, my phone successfully reversed to Lolipop, and I changed the USB port, I talked to Asus authorised service centre and they said it will cost the price of the phone, so I just give up, as everything works, but not the phone with the computer via USB and not the quick charging. Asus centre said it is a motherboard failure, but I'm asking how is that possible if all other functions work well???
timbernot said:
Buddy , its hardware so software tweaks will be useless .
Click to expand...
Click to collapse
Yes, I see your point, but I cannot imagine how is this possible, when all other things work well on the phone and the SMMI test shows all sensors working properly?
Mattiii said:
Yes, I see your point, but I cannot imagine how is this possible, when all other things work well on the phone and the SMMI test shows all sensors working properly?
Click to expand...
Click to collapse
Ask yourself the same 2 questions again once more
Is your phone recognised by PC ?
Is fast charging working now ?
If answer is no after downgrade .
You know the answer
i changed mainboard and working
well, i have the same problem and i try the following possibility and all unsuccessful.
1. i tried 3 different pcb still no luck
2. i changed sim flex still no luck
3. i changed battery still no luck
4. i changed lcd and digitizer completely still no luck
5. i wiped cache from android recovery MM still no luck
6. i wiped data and factory reset from android recovery MM still no luck
7. i install same latest os (MM) for ze551ml from sd card still no luck
8. i use original ac adapter and cable and tried working different one for every step.
so i want to ask a questions. can it be ground connection somewhere on cases? or motherboard
i am tired but problem found. it is exactly motherboard problem. i bought used original mainboard and all is working.
Note: other mainboard using same android os version so it is not os failure.
I've done just about everything. There's a log cat below. EVERY ROM, EVERY KERNEL STOCK OR CUSTOM, this issue is there after the first reboot. Im only going to answer every question that goes like "have you tried...." With a full rundown of what I did and results. I will remind I've tried every custom nougat rom, stock or custom and I've tried stock marshmallow rom to. Also some roms haven't even had sound on first boot. Some roms will work for a bit then they will do a soft reboot that takes 30-45 minutes to complete. Then have no sound. I'm open to taking my phone apart since my screen is fu*ked up. Im begging at this point I love this phone, I've had it for 2 months, I don't want to have to buy another one.
Tried unbrick tool yet? That may have a slightly different effect than just flashing stock ROM (as it completely nukes the device and installs everything again).
Anyways, you may have a hardware issue. In that case taking the phone apart won't do much ... You can only check the connections, that's about it.
Sent from my OnePlus 3 using Tapatalk
Explorer23 said:
Tried unbrick tool yet? That may have a slightly different effect than just flashing stock ROM (as it completely nukes the device and installs everything again).
Anyways, you may have a hardware issue. In that case taking the phone apart won't do much ... You can only check the connections, that's about it.
Sent from my OnePlus 3 using Tapatalk
Click to expand...
Click to collapse
I did actually brick it awhile back trying to solve that damn sound issue. I used the mega unbrick guide to fix it, I can try again. Cause hell who knows it might fix it. Thanks for the recommendations.
Found out it is hardware i narrowed it to the aux port board which is what the fingerprint sensor, microphone, speaker connect to. I'm ordering a new part tomorrow for it
Did you find any solution? Im having the same issue and trying to figure out how to fix tihs
Dlind said:
Found out it is hardware i narrowed it to the aux port board which is what the fingerprint sensor, microphone, speaker connect to. I'm ordering a new part tomorrow for it
Click to expand...
Click to collapse
Please give me the link to buy. Im having same issue too. And i think its hardware
xsetiadi said:
Please give me the link to buy. Im having same issue too. And i think its hardware
Click to expand...
Click to collapse
Well, when I bought the new part and replaced it, it didn't do anything. But I can still give you a link, I need up getting a htc 10 cause I was sick of the phones bs. https://m.ebay.com/itm/OEM-Earphone...%3Ac0cbdf2615e0ab10a81ff986ffd94c65%7Ciid%3A6
Dlind said:
Well, when I bought the new part and replaced it, it didn't do anything. But I can still give you a link, I need up getting a htc 10 cause I was sick of the phones bs. https://m.ebay.com/itm/OEM-Earphone...%3Ac0cbdf2615e0ab10a81ff986ffd94c65%7Ciid%3A6
Click to expand...
Click to collapse
You mean this not rix the problem?
I
xsetiadi said:
You mean this not rix the problem?
Click to expand...
Click to collapse
It could for you, but it didn't change a thing for me. Every phones diffrent.