[Q] Nexus 7 car install - heat issues - Nexus 7 Q&A, Help & Troubleshooting

Hi all,
Not really sure if this thread belongs here, but I can't think of anywhere else to ask. So here goes anyway
I installed my Nexus 7 in my car a while back (thread here: http://forum.xda-developers.com/showthread.php?p=32029790).
Its been great, but I've had to return it twice due to random reboots when the car is hot. I've had the battery replaced twice (I assume due to swelling). The battery is only rated for around 40 degrees Celsius I believe, and in summer the interior of my car probably exceeds that.
So I'm trying to figure out a workaround. Some ideas:
- Would taking the battery out completely and just powering the tablet off the car solve the problem? Is it even possible?
- How about some kind of heat shielding?
- Someone suggested little fans that are commonly used to cool amplifiers - but I'm thinking that won't help when the car is turned off.
Any other suggestions? Has anyone else with tablet installs had this problem?
Thanks guys!

No thoughts?

If you can get some sort of air flow to the rear section that would help. Maybe keep the back off the case removed? Try putting a heat sync on the battery itself with the case kept off with a little area for air flow.
Sent from my One X using Tapatalk 2

I am completely against what you are doing. The device isn't designed for that environment. Understand you are exposing your device to 2 of electronics biggest enemies: heat and shock. The environment calls for a ruggedized device. But you're gonna do what you're gonna do...
I haven't opened my unit, but the power specs should be on the battery. If not, there is a schematic for the N7 available thru the rear camera thread. Removing the battery and providing alternate power is probably the safest choice and requires the least amount of detailed work.
Next alternative is fan cooling. Solar cell power will handle an idle car. Air flow engineering and design is gonna take some math rigor. You will need to exhaust the heat to keep the temp down, more work.
I need some sleep, I hit the thanks thinking I was hitting reply...

UnitedWeFall said:
Hi all,
Not really sure if this thread belongs here, but I can't think of anywhere else to ask. So here goes anyway
I installed my Nexus 7 in my car a while back (thread here: http://forum.xda-developers.com/showthread.php?p=32029790).
Its been great, but I've had to return it twice due to random reboots when the car is hot. I've had the battery replaced twice (I assume due to swelling). The battery is only rated for around 40 degrees Celsius I believe, and in summer the interior of my car probably exceeds that.
So I'm trying to figure out a workaround. Some ideas:
- Would taking the battery out completely and just powering the tablet off the car solve the problem? Is it even possible?
- How about some kind of heat shielding?
- Someone suggested little fans that are commonly used to cool amplifiers - but I'm thinking that won't help when the car is turned off.
Any other suggestions? Has anyone else with tablet installs had this problem?
Thanks guys!
Click to expand...
Click to collapse
Is your tablet being charged even with the car off ?
Sent from my HTC One S using xda premium

maek_it_happen said:
Is your tablet being charged even with the car off ?
Sent from my HTC One S using xda premium
Click to expand...
Click to collapse
No why?

I thought that might be your heat issue
Sent from my HTC One S using xda premium
---------- Post added at 12:29 PM ---------- Previous post was at 12:23 PM ----------
I have an a100 in dash and have not had any overheating whatsoever
Sent from my HTC One S using xda premium

What about remove the N7 from dash and take with you or hide it under seat ( not so hot i guess). Beside the the solar powered fan proposed i cant think anything else
Sent from my LG-P500h using xda premium

Related

Desire HD battery cover.

Just to let other people know a little about my experiences so that it helps them.
Ok, normally when out and about I guard my phone quite fiercely, having lost many in the past due to theft, drunken stupidness or general carelessness. One evening last week, I was a little enebriated and on the way home had a fight with a bush. Phone came out of pocket and case, and hit the floor. I picked it up, checked for broken screen and put it back in its case and eventually got home in one piece.
Morning arrives, and I pick it up to make a call and noticed the phone battery cover was missing. I have ordered a replacement but have noticed some strange happenings since.
For example, although the battery may be in enough to keep the phone on (held with blutac right now) i noticed it wasnt charging. The led would come on and just flash green and orange, but no charge symbol. If I pushed the battery a little, it would then be ok. I also noticed when trying to use the camera, I would get a message saying something about the weather being too cold and not being able to use the flash. If I pushed the battery a little again, it would come back on.
The obvious problem I have until the cover arrives is wifi, as the cover has the wifi antenna on apparently so wifi connectivity is awful at the moment. Ive posted this in case anyone has anything similar and wondering what may be causing it.
Hope this is useful!
Thanks for making me laugh!
Are you sure you don't have a drinking problem
Thanks for the info anyway.
HAHAHA, maybe u should get yourself an otterbox for when u hit the sauce!
Order a silicon case/cover too with the batt cover .
But,to be serious, it is very much protective in case you have another fight with bush.
Sent from my Desire HD using XDA App
Trust me, it is not easy as it look to take care your phone..although your take care more than your life, eventually one day, it will drop from your hand to ground..its happen to me twice!!..first time happen, no case because i though i can protect my phone like my life, but i make mistake, I got 1 small chip near power button!!..2nd time it happen, thank god, i already buy the case, my phone is save, no chip or dented..haha..
Sent from my Desire HD using XDA App
Thanks for the laughs and the info
Sent from my Desire HD using XDA App
We need more 'developers' like you man)) thx for info anyway))

[Q] Glass back shattered

Having just come off the phone to my Network, I'm worried about my choice of Nexus 4. My first one I have had less than a week and this morning the back glass went ping whilst it was sitting on the sofa doing nothing, the entire back just shattered all on its own.
The Network operator advised there are issues with leaving the phone on charge for long periods and the battery overheating causing the glass to shatter. I was offered an alternate phone, but I actually like the Nexus so am giving it another go. Has anyone else experienced anything similar?
I'm used to charging my phone overnight whilst in bed as I don't feel this is excessive over charging????
This.. this is making me concerned for my phone.. I've never left it charging over night intentionally as it wears down battery health but I have forgotten with my other phones..
It's the heat, do you live in a child country, or keep the ac low? Since the glass is thick, the temperature gradient between the two sides causes expansion like in a bi metallic strip, causing it to bend, and eventually crack as strain goes beyond the critical point of elasticity. 11th grade physics
Sent from my GT-I9100
If I helped you, please hit the thanks button!
---------- Post added at 12:10 AM ---------- Previous post was at 12:09 AM ----------
Long story short, don't subject the phone to a temperature gradient of more than 7-10 degrees Celsius, the glass will break, gorilla or no gorilla
Sent from my GT-I9100
If I helped you, please hit the thanks button!
euki69 said:
This.. this is making me concerned for my phone.. I've never left it charging over night intentionally as it wears down battery health but I have forgotten with my other phones..
Click to expand...
Click to collapse
No such thing as all modern phones/batteries have circuitry built in to prevent overcharging. The phone will tell the AC adapter to stop supplying power and as such it does. You can keep devices plugged in for days without any current reaching the battery. If your phone is still charging past 100% then that's a faulty AC adapter which should be replaced.
It's -20C outside now while inside being 20C so that's a 40 degree difference and I have no issues with my phone just cracking out of no where. Glass surely will crack under drastic temp changes but definitely not that easy, especially tempered glass on (like such on cars).
shotta35 said:
No such thing as all modern phones/batteries have circuitry built in to prevent overcharging. The phone will tell the AC adapter to stop supplying power and as such it does. You can keep devices plugged in for days without any current reaching the battery. If your phone is still charging past 100% then that's a faulty AC adapter which should be replaced.
It's -20C outside now while inside being 20C so that's a 40 degree difference and I have no issues with my phone just cracking out of no where. Glass surely will crack under drastic temp changes but definitely not that easy, especially tempered glass on (like such on cars).
Click to expand...
Click to collapse
I can only go by what my Network told me, I was placed on hold whilst they contacted the Nexus Team whoever they are. When he came back he stated that I had left my phone charging for too long which would have likely caused the glass to fail.
Even I was shocked when I saw the shattered glass and thought they're going to think I dropped it. But then dropping the phone with the special glass shouldn't cause it to shatter, maybe a crack or two, but as per the picture this is an all over shatter.
Maybe I just had a one off duff phone, time will tell as I've ordered a replacement as I actually love the phone itself. Had a HTC for 2 years with not a scratch as I look after my things.
Hantslad said:
I was placed on hold whilst they contacted the Nexus Team whoever they are. When he came back he stated that I had left my phone charging for too long which would have likely caused the glass to fail.
Click to expand...
Click to collapse
Sorry but this is utter nonsense. If this is really what they said, then either they were winding you up for a laugh, or they didn't know what they were talking about.
Sent from my Nexus 4 using xda premium
steviewevie said:
Sorry but this is utter nonsense. If this is really what they said, then either they were winding you up for a laugh, or they didn't know what they were talking about.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Maybe they thought it was funny and were winding me up then. I guess they just replace phones for no reason?
I'm pretty sure if there were no known faults they wouldn't just offer a free exchange or an alternate phone if they thought I'd smashed the thing myself.
Mine broke by being in my pocket just the other day. It's on it's way to LG right now for possible Warranty work.
shotta35 said:
Glass surely will crack under drastic temp changes but definitely not that easy, especially tempered glass on (like such on cars).
Click to expand...
Click to collapse
Its not the glass affected by temperature changes, rather the metal components and frame that are. This "can" cause glass to crack.
Did your phone have any kind of skin or protector on the back?
I have heard stories of cracking from temp changes.
I have a front and back protector and have not had any trouble with mine going from zero degrees outside to 70 inside or vice versa.
euki69 said:
This.. this is making me concerned for my phone.. I've never left it charging over night intentionally as it wears down battery health but I have forgotten with my other phones..
Click to expand...
Click to collapse
Leaving it charging over night has absolutely no ill effects on the battery.
Sent from my Nexus 4 using Tapatalk 2
Hantslad said:
The Network operator advised there are issues with leaving the phone on charge for long periods and the battery overheating causing the glass to shatter.
Click to expand...
Click to collapse
Hmm I charge my phone during night since november and still perfect
Are you making this story up mate? I don`t believe a word of it and it sounds like troll language to me Damage like that seems to be caused by a fall (flat on it`s back) rather than a overheated battery imo. It would take a sudden 40-50 degrees Celsius increase and most probably the glas would melt rather than break. Breakage is caused by temperature differences between the inner and outer side off the glas. And you don`t have it fixed allthough they offered it too you?
Hi
It looks like a typical stress fracture of the glass.
I'm not convinced normal changes in temperature is the cause as otherwise we'd not be using glass for windows!
Charging overnight is perfectly safe and doesn't harm the battery. Lithium batteries explode if constantly charged so the charging circuitry is carefully designed to monitor the charge and stop it when the battery is full. There are also safe guards in place, which likely the red flashing LED issue is an indicator of a fail-safe being triggered.
Sometimes lithium batteries go wrong. The lithium batteries in the Nexus are not in a rigid metal can like most but a different technology that allows them to be in a soft foil packet, much like you might find food in. This means a fault can cause the battery to expand, this would deform the back, stressing the glass and breaking it. Typically with such a fault there will be heat, so 1st line support on hearing of customers finding a hot phone with a smashed back may be coming to the wrong conclusion that heat is the cause.
The only people that know the truth are LG who will find these phones winging their way back to them, and unless this is a huge problem where a recall is required, we will probably never know or be told of a confirmed cause of these "Unexplained Spontaneous Back Shattering" events or USBS, and there probably isn't one single cause anyway.
Regards
Phil
gee2012 said:
Are you making this story up mate? I don`t believe a word of it and it sounds like troll language to me Damage like that seems to be caused by a fall (flat on it`s back) rather than a overheated battery imo. It would take a sudden 40-50 degrees Celsius increase and most probably the glas would melt rather than break. Breakage is caused by temperature differences between the inner and outer side off the glas. And you don`t have it fixed allthough they offered it too you?
Click to expand...
Click to collapse
Why would I make it up? I asked the question if anyone else has had similar issues as when my replacement arrives on Tuesday, if it happens again, I would like to know if it is infact a common issue.
Had I have dropped the phone I would be asking if anyone knows how I could get it fixed. Why would anyone waste time posting a load of lies?
As it happens 3 Network have advised they are aware of over charging causing the back glass to break, although I don't see any warnings or advice over how long you should keep a phone on charge.
I fail to see how what I have stated has given you reason to think I am trolling. I am happy with the phone itself and feel it's worth another go as it's fast and to be honest is one of the best handsets I have had.
Hantslad said:
As it happens 3 Network have advised they are aware of over charging causing the back glass to break, although I don't see any warnings or advice over how long you should keep a phone on charge.
Click to expand...
Click to collapse
Sounds like 3's support staff don't know what they are taking about.
Sent from my Nexus 4 using xda premium
steviewevie said:
Sounds like 3's support staff don't know what they are taking about.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Now, this I can agree with. The reason I have given the phone a second chance is that I believe I had a duff phone. I was offered a different phone, but stuck with the Nexus as I actually love it so far.
When I contacted 3, they placed me on hold for a few minutes and came back to advise they had spoken to the Nexus Team, wether that be at 3 or Google, I have no idea. The conversation was almost accusing me of over charging, but being an average phone user I do not know what over charging is. I just plug the phone in and leave it as I always have with previous phones.
The phone itself was not in any pocket, but just sitting on the sofa when it shattered and I too find it hard to believe it just shattered by itself, but in all honesty it did! I have no reason to come on here and say otherwise.
Let's hope the replacement will give me many hours of use, I've ordered a 2 cases to ensure if I do drop it, I get some protection.
Overdose1986 said:
Hmm I charge my phone during night since november and still perfect
Click to expand...
Click to collapse
+1
I have charged overnight every night since November with no ill effects. I've used various nexus and non-nexus chargers.
I've also never used a screen protector and have had no scratches. I have a 3 quid S tpu for the back and sides.
Sent from my Nexus 4 using xda premium
I've never not charged a phone all night. If I had to wake up at 1 or 2 in the morning to unplug this phone I would sell it today, that is ridiculous. I can't believe that LG or any company would think that this would be acceptable in 2013. Maybe back in the stone age but not today. With that being said, my phone is still in perfect condition with a protector on the front and back. The only thing that drives me crazy is the creakiness of the phone. I hope this crap gets straightened out.
Sent from my Nexus 4 using xda premium

[Q] Red light of death hardware fix in new batches?

Hello,
Please dont burn me since this topic has a lot of threads already. I live outside the USA and will be visiting US for a few weeks and am planning on getting the nexus 4. After reading through dozens of threads, the general conclusion seems to be that its a hardware problem which can be temporarily fixed by unscrewing the back plate and whatnot.
My question is that is this problem present only in the first few batches of nexus 4 devices? Do you think google must have fixed it by now and cranking out fixed hardware this time?
If so anyone who has recently bought the nexus can confirm? Or is there any link which confirms this?
I only ask because I dont want to be stuck with a dead phone sixteen thousand miles away :/
Thank you!
Life is a gamble. Having said that, chances are a million to one that your brand new n4 will have the battery problem.
Sent from my Nexus 4 using xda premium
jamesc760 said:
Life is a gamble. Having said that, chances are a million to one that your brand new n4 will have the battery problem.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Do you think nexus support will comment on this if I call them up in US once I land?
I recently bought a N4 in the USA, not my usual place of residence. It no longer works - the dreaded red light of death. I have no idea how it happened, but that I let the battery run very low and when I plugged it in to charge it froze and then never turned on again.
I've tried various things, but the screen never displays anything, there's no vibration, etc. I've charged it for a long time and to no avail. Strangely, when I plug it into my computer I immediately get a warning about "Unsafe device removal"
I'm either going to pay to get it fixed, or RMA it when I make it to the USA next.
There's a way to fix. You have to remove the back cover and unscrew the two screws that is holding the battery pins. Once you have taken off the screws you have to lift the pins off just a little bit. Don't take the battery off. Then place the pins back and rescrew them in. That should work.
Sent from my Nexus 4 using Tapatalk 2
Just so you know, I have one of the first batch Nexii, have had mine since mid-November, and have never had this issue. They don't all have the problem.
I just freaking experienced this. I reading something, while sitting near my charger, and I forgot to plug my phone in. Then the phone died, so I pluged it in, and there it was, the infamous red light :/ I scared the sh*t out of me. But after unpluging and holding all 3 buttons at once for a few sec, it booted.
I am so freaking lucky
I was on the latest PA rom
Ps. I bought my phone in January, so its from the 3rd batch (ordered in december in germany)
Sent from my Nexus 4 using xda app-developers app

[Q] Phone issues galore

Hey, I know this is by far the most stupid thing I've done in a long time, so please don't point it out to me, but I traded my Galaxy S4 + cash for a G2. I checked out the phone for a bit to make sure it was fine, and so far it only has 2 issues, one of which I can fix.
1. The phone is an in-store demo unit, it keeps playing through Verizon's demo software, which I don't mind, I can fix that.
2. The phone's battery is dying, as in it's max charge yesterday was 37%, today it's 35%.
Now, I hate to ask this because I feel like a total derp, but is there anything I can do about the battery (I know it's internal, but is it able to be repaired)?
It isn't molded plastic so you can definitely change it. Haven't seen any threads on it yet though. As for point 1, try to get into factory reset mode and do that.
Sent from my Nexus 7 using Tapatalk 2
From what I heard and read the back cover is simple to remove. Just put your nails into the small gap between the silver band and the cover and move it along the edges, I'm sure the cover should come off. The battery should be accessible, not sure if you need to unglue it or solder it off, which shouldn't be a difficult task. Then search eBay for a battery replacement which shouldn't be hard to find just search for the Korean model of the LG G2.
Sent from my LG-D801 using xda app-developers app
shook187 said:
From what I heard and read the back cover is simple to remove. Just put your nails into the small gap between the silver band and the cover and move it along the edges, I'm sure the cover should come off. The battery should be accessible, not sure if you need to unglue it or solder it off, which shouldn't be a difficult task. Then search eBay for a battery replacement which shouldn't be hard to find just search for the Korean model of the LG G2.
Sent from my LG-D801 using xda app-developers app
Click to expand...
Click to collapse
The Korean model has a 2600mah battery, while the other models have 3000mah. It's not the same battery, it might not even fit.
Do you have insurance on the line? If so just have it replaced.
Sent from my VS980 4G using XDA Premium 4 mobile app
no insurance
I don't have insurance, but if I did, would it even cover my phone that has been swapped?
Edit: Also I contacted the seller and he said that the phone "requires" a special charger, which I know it says it's not the correct charger when I plug it in, but I don't think it "requires" the LG one, but I could be wrong I suppose, I am using a 2.0A charger from my old Note II
Have you tried to just do a factory reset on it to solve the issues??
turnturn1225 said:
Hey, I know this is by far the most stupid thing I've done in a long time, so please don't point it out to me, but I traded my Galaxy S4 + cash for a G2. I checked out the phone for a bit to make sure it was fine, and so far it only has 2 issues, one of which I can fix.
1. The phone is an in-store demo unit, it keeps playing through Verizon's demo software, which I don't mind, I can fix that.
2. The phone's battery is dying, as in it's max charge yesterday was 37%, today it's 35%.
Now, I hate to ask this because I feel like a total derp, but is there anything I can do about the battery (I know it's internal, but is it able to be repaired)?
Click to expand...
Click to collapse
Is 'go to the police' an option?
WheresTrent said:
Is 'go to the police' an option?
Click to expand...
Click to collapse
Why would a store be selling off a demo phone of the latest model. Sounds very fishy.
Sent from my MB860 using Tapatalk 2

[Q] replaced screen on xt912, wont power on

yeah its a first time question for me and I'm sorry if it has been covered, I did try to find it. So i replacdd a display on the the deivce and it will not power on or give any sign of life. I checked with my meter and its got roughly 3.5 volts which is good enough to power. any one have an experience with this and know the correct method of getting it to power on? tried volume down and power for ten seconds didnt work. I've got it on the oem charger now even though it has a charge.
Wrong forum... But maybe your digitizer isn't plugged in correctly? Our the digitizer was crack in the process of replacing it
Sent from my XT907 using xda app-developers app
Yea, I have replaced several on the xt910/912 may be an issue with the install check the ribbons for tears... ensure that there both seated correctly.. replace the metal cover over the connectors... did you replace the full housing or just the digitizer/ screen? Or Item may be defective... when plugged in you should still see the led flash green if all is well with the battery ( the ones I have done did)...
Sent from my XT907 using xda app-developers app
re: answers
yes, i should have seen some sign of life is what i was thinking as well. i replaced the whole bezel. no flash no green light and no idea. I do apologize for wrong forumn.only thing i can think of is that when taking the motherboard off the back of the display is maybe something above got damaged. i thank you both for your answers. is there a heat rip sensor on this model that would cause it to go into protected mode even though it was totally disassembled? i had used my separater to warm the adhesive to make removal of the baord easier
I'm unsure about the sensor... but I use a heat gun as well and never had issues with the Motorola's... i have 3 here one still on GB and the other two on jb.. if you know of a way to get me a shipping label I could send ya one if you think its the logic board or battery (screens are broken)...
Sent from my XT907 using xda app-developers app
ezknives said:
I'm unsure about the sensor... but I use a heat gun as well and never had issues with the Motorola's... i have 3 here one still on GB and the other two on jb.. if you know of a way to get me a shipping label I could send ya one if you think its the logic board or battery (screens are broken)...
Sent from my XT907 using xda app-developers app
Click to expand...
Click to collapse
Very appreciative man, but the riddle has solved itself. I have changed charging voltages every few hours from different usb sources to wall and to computer. it finally flashed n and i got life. I had a very distraught customer.(not to mention the guy who said sure gimme an hour) xda is a common answer to my google queries.I'm glad that i did finally join. :good:
awesome bunch of guys

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