I believe the external speaker on my Nexus One may be faulty (no ringtones/alerts, no speakerphone, no music, etc.), and was wondering what Linux commands/logs I could look into to check for obvious error messages.
- logcat?
- dmesg?
Any specific logs/devices/commands related to the audio subsystem I should look at? I've already glanced through logcat/dmesg output and don't see anything screaming out about a hardware issue. Is there some other log that shows system boot messages when it's first initializing devices?
Thanks!
Guess I'm gonna send it in to HTC to be repaired (bootloader unlocked), but would still be curious to do some diagnostics on my own if anyone has any ideas.
Related
Hi all,
As i started servicing all pdas for a couple of monthes (only as a hobby, i fix them for friends and relatives), i came across one BA that gave me some trouble.
i got it to replace its LCD that was broken as it was dropped and thats very simple to replace it, so far so good. now it has two main problems :
1. no sound from speaker (even when in speakerphone mode), but there is sound in the stereo earphones (i plugged to the connector by the sd card slot). - i can only assume that a bluetooth handsfree device it will also work.
2. although the backup battery is fully charged, if i remove the main battery even for a brief second, when turned on, the BA acts as if i made a hard reset.
as for solving the problems :
1. using a digital multimeter, i managed to track the conductivity from the internal speaker through its connector, flat ribbon to the connector which connects to the main pcb - so there is no contact problem from the speaker to the main pcb.
using the help from WIKI, i went to site that has the list of all components and their description - the IC that is responsible for audio amp is a MAXIM's MAX4410 which is a stereo headphone driver. a quick look at its charasteristics and typical configuration and i understood that (assuming this is the IC that drives the internal speaker) the speaker should have one pin which is ground and the other goes to the amplified signal from the IC. neither one of the pins showed it has GND to it. so maybe there is a bad GND line to the connector.
2. regarding the backup battery issue i do not know what makes this problem.
I am sharing this info with you all with two ideas in mind :
1. to resolve my problem and know those devices hardware better.
2. because i am quite a while watching xda-developers and WIKI and i got the feeling that a lot of eforth is given to the software side of all those pdas (which is greate!!! keep going, this work helps lots of people and it shows al thos mega corps they are not the only ones), but the hardware is a bit forgotten and left behind. let me tell you this, there are many VERY simple mini projects i made useing electronics (i am an electronics engineer in my profession) that made my life easy . i am now investigating those instruments hardware as i have several ideas to develope useful accessories to my pda (like an external IR transciver to control IR devices like TV,DVD and to communicate with my laptop, and some other ideas) and i believe we can do the same info sharing as done on software side but on the hardware side.
I will thank any ideas, thoghts or commentsabout this matter. Yol.
It seems you have posted this in more than 5 different forums topics.
This will not get you an answer quicker. Please, as this is a BA device, would it be possible to just keep the posts either in the BA topics or in the Upgrading, modifying, unlocking topic.
Please don't feel insulted, it's just that some people use the "view posts since last visit" and saw 8 instances of the same message.
Anyway, to your problem:
1. I guess it is best if you do try first if the bluetooth has sound. If it does, maybe it is the speaker, if not maybe the sounds are set to off for phone sounds. Check the volume slider.
2. Can't help you with the battery problem, sorry
Hi all,
As i started servicing all pdas for a couple of monthes (only as a hobby, i fix them for friends and relatives), i came across one BA that gave me some trouble.
i got it to replace its LCD that was broken as it was dropped and thats very simple to replace it, so far so good. now it has two main problems :
1. no sound from speaker (even when in speakerphone mode), but there is sound in the stereo earphones (i plugged to the connector by the sd card slot). - i can only assume that a bluetooth handsfree device it will also work.
2. although the backup battery is fully charged, if i remove the main battery even for a brief second, when turned on, the BA acts as if i made a hard reset.
as for solving the problems :
1. using a digital multimeter, i managed to track the conductivity from the internal speaker through its connector, flat ribbon to the connector which connects to the main pcb - so there is no contact problem from the speaker to the main pcb.
using the help from WIKI, i went to site that has the list of all components and their description - the IC that is responsible for audio amp is a MAXIM's MAX4410 which is a stereo headphone driver. a quick look at its charasteristics and typical configuration and i understood that (assuming this is the IC that drives the internal speaker) the speaker should have one pin which is ground and the other goes to the amplified signal from the IC. neither one of the pins showed it has GND to it. so maybe there is a bad GND line to the connector.
2. regarding the backup battery issue i do not know what makes this problem.
I am sharing this info with you all with two ideas in mind :
1. to resolve my problem and know those devices hardware better.
2. because i am quite a while watching xda-developers and WIKI and i got the feeling that a lot of eforth is given to the software side of all those pdas (which is greate!!! keep going, this work helps lots of people and it shows al thos mega corps they are not the only ones), but the hardware is a bit forgotten and left behind. let me tell you this, there are many VERY simple mini projects i made useing electronics (i am an electronics engineer in my profession) that made my life easy . i am now investigating those instruments hardware as i have several ideas to develope useful accessories to my pda (like an external IR transciver to control IR devices like TV,DVD and to communicate with my laptop, and some other ideas) and i believe we can do the same info sharing as done on software side but on the hardware side.
I will thank any ideas, thoghts or commentsabout this matter. Yol.
I think you should post this again, just in case we missed the other 9 duplicate posts... wouldn't this have made most sense in the development and hacking section, pretty much the only section you didn't post to?
V
@Vj LOL
Fault 1) When I hear someone saying 'maybe it has a bad earth' i think of car mechanics 'wiring' and Ford cars! If you have the data sheet, use a 'scope - fixing it should be a piece of cake (IF you know what you are doing)
Fault 2) These devices usually have tiny 3V Li-ion button batteries somewhere inside - find it, replace it.
BTW - search the internet for a SERVICE MANUAL - you NEVER know your luck!
Andy
Fault one the backup battery is designed to keep memory alive not power the unit! I would expect it to act the way you describe.
Audio check the stereo jack, my guess is you'll find the problem there. It's rather common failure.
I never said the battery backup powered the unit, did I? He said removing the main battery & putting it back in acts like a hard reset indicative of a knackered memory backup battery.
I'm making educated guesses based on 15 years experience as an electronics engineer & also that I have just fixed an Xda Exec with EXACTLY this problem (If I'm reading his post correctly that is).
Andy
Hi,
I accidentally crushed my photo between a seat and a table on a train. (htp://imgur.com/Q1RUsEk) This is what it looks like after it was crushed.
Immediately after it was crushed, I noticed the phone network icon was empty. I turned off the phone and it has not been possible to boot back into the home screen since then.
I attached the phone to my computer and used ADB to get (htp://pastebin.com/H85Xq2U4) the last_kmsg, (htp://pastebin.com/NArZYWSZ) logcatouput, and (htp://pastebin.de/124812) bugreport output.
I'm not an expert at debugging problems with phone hardware but it looks like there is a problem with the audio subsystem in logcatoutput.
Are there any reasonable steps I can take in trying to resurrect my phone?
- votadini_
(Sorry for the "broken" links, I had to edit the addresses to make this post due to it being my first post.)
Bumping in the hope that this can receive some attention.
repair/replace
votadini_ said:
Bumping in the hope that this can receive some attention.
Click to expand...
Click to collapse
According to your log description it would seem that there is physical damage to the system board. The only option would be to do an inspection of the phone. This will require dis-assembly and that does need some skill, although there are several threads here on XDA that might help.
Determining the actual board damage would require some knowledge of electronics.
I would suggest that you look into replacing the unit. With the Nexus 4 you might be able to find a used unit on ebay or on the Swappa forum here on XDA.
Your sign-on doesn't indicate a location, so you may or may not be able to access/use these sites. At any rate you are looking at some pricey repairs, if such repairs are even possible.
good luck.
Hello!
Yesterday while travelling, I listened to music for 3-4 hours using bluetooth earphones. After i reached home, I suddenly heard a crackling sound from the top speaker, so I thought of rebooting the phone to see if it would fix the issue. On rebooting, the audio of my phone has completely died. I can hear no audio through wired headphones, bluetooth earphones, or through the stereo speakers of the phone.
Also, when I try to make calls, the Phone app hangs for 4-5 seconds and then dials the number, only to have no audio though the earpiece, with the mic also not working. I tried rebooting multiple times, even did a hard reset, still with no luck.
Has anyone else experienced a similar issue? I have some experience opening up the phone, so I'll be willing to fix it myself if anyone knows the solution.
Yes, I have exactly the same symptoms, although how I got there is different. See in this thread: https://forum.xda-developers.com/nexus-6p/help/nexus-6p-replacing-battery-audio-t3754176.
I'm still no closer to a solution and still don't know whether it's a hardware or software problem. Since my audio problem began coincidentally to when my phone was opened for repair (battery replacement), that tends to make me think hardware damage or failure. Since you have exactly the same issue without any apparent hardware trauma, that tends to make me think software.
---------- Post added at 09:37 AM ---------- Previous post was at 09:05 AM ----------
SoonerLater said:
Yes, I have exactly the same symptoms, although how I got there is different. See in this thread: https://forum.xda-developers.com/nexus-6p/help/nexus-6p-replacing-battery-audio-t3754176.
I'm still no closer to a solution and still don't know whether it's a hardware or software problem. Since my audio problem began coincidentally to when my phone was opened for repair (battery replacement), that tends to make me think hardware damage or failure. Since you have exactly the same issue without any apparent hardware trauma, that tends to make me think software.
Click to expand...
Click to collapse
Here's another thread with similar issue (and no resolution) https://forum.xda-developers.com/nexus-6p/help/audio-output-6p-t3570609
And another... with a supposed mention of a solution https://forum.xda-developers.com/nexus-6p/help/audio-weirdness-t3650819 The author mentions installing Cinema FV-5 (https://play.google.com/store/apps/details?id=com.flavionet.android.cinema.lite) and then using the controls in that app to fix the problem. I installed it, but Cinema FV-5 just crashes on my phone.
And another thread... also with a supposed solution https://forum.xda-developers.com/nexus-6p/help/nexus-6p-audio-playback-error-app-t3476592
Another thread (but no solution) https://forum.xda-developers.com/nexus-6p/help/audio-sound-youtube-doesnt-play-t3447309
Another https://forum.xda-developers.com/nexus-6p/help/sound-mic-dead-phone-crashed-t3338186
I found these by searching this forum only for threads with "audio" in the title. There are others that I didn't link above, but they're older.
SoonerLater said:
Yes, I have exactly the same symptoms, although how I got there is different. See in this thread: https://forum.xda-developers.com/nexus-6p/help/nexus-6p-replacing-battery-audio-t3754176.
I'm still no closer to a solution and still don't know whether it's a hardware or software problem. Since my audio problem began coincidentally to when my phone was opened for repair (battery replacement), that tends to make me think hardware damage or failure. Since you have exactly the same issue without any apparent hardware trauma, that tends to make me think software.
---------- Post added at 09:37 AM ---------- Previous post was at 09:05 AM ----------
Here's another thread with similar issue (and no resolution) https://forum.xda-developers.com/nexus-6p/help/audio-output-6p-t3570609
And another... with a supposed mention of a solution https://forum.xda-developers.com/nexus-6p/help/audio-weirdness-t3650819 The author mentions installing Cinema FV-5 (https://play.google.com/store/apps/details?id=com.flavionet.android.cinema.lite) and then using the controls in that app to fix the problem. I installed it, but Cinema FV-5 just crashes on my phone.
And another thread... also with a supposed solution https://forum.xda-developers.com/nexus-6p/help/nexus-6p-audio-playback-error-app-t3476592
Another thread (but no solution) https://forum.xda-developers.com/nexus-6p/help/audio-sound-youtube-doesnt-play-t3447309
Another https://forum.xda-developers.com/nexus-6p/help/sound-mic-dead-phone-crashed-t3338186
I found these by searching this forum only for threads with "audio" in the title. There are others that I didn't link above, but they're older.
Click to expand...
Click to collapse
Thanks for your reply. I tried to fix the pins on the daughterboard after reading your conversation with another member. The pins seemed fine when I took out the daughterboard, still I straightened 'em a bit. The problem still persists though, no audio whatsoever.
Is there anything else you might suggest?
imrock0 said:
Thanks for your reply. I tried to fix the pins on the daughterboard after reading your conversation with another member. The pins seemed fine when I took out the daughterboard, still I straightened 'em a bit. The problem still persists though, no audio whatsoever.
Is there anything else you might suggest?
Click to expand...
Click to collapse
I wish that I could offer you a solution. When my new (to me) Nexus 6P arrives tomorrow, I'll be free to tear into my existing "audio-free" 6P. I'll examine the daughterboard and probably replace it. The daughterboards are <$15 everywhere I've looked. It's just a guess, but I bet that I could have a bad daughterboard, but not be able to determine that's bad by (my) visual inspection. It could look good (to me), but be bad. Since my audio was lost when my phone was opened to replace a battery, it seems plausible that the daughterboard was damaged in the process. Since the primary mic (maybe all the mics, I don't know) is on the daughterboard, it would certainly explain why the system isn't getting any audio input. Anyway, I feel like the small cost of the board is worth it just to see if that actually fixes the problem.
If that resolves my issue -- or I find anything that does -- I'll certainly let you know. I've bought a new (to me) phone, but I'm not ready to give up the ghost on this one just yet.
SoonerLater said:
I wish that I could offer you a solution. When my new (to me) Nexus 6P arrives tomorrow, I'll be free to tear into my existing "audio-free" 6P. I'll examine the daughterboard and probably replace it. The daughterboards are <$15 everywhere I've looked. It's just a guess, but I bet that I could have a bad daughterboard, but not be able to determine that's bad by (my) visual inspection. It could look good (to me), but be bad. Since my audio was lost when my phone was opened to replace a battery, it seems plausible that the daughterboard was damaged in the process. Since the primary mic (maybe all the mics, I don't know) is on the daughterboard, it would certainly explain why the system isn't getting any audio input. Anyway, I feel like the small cost of the board is worth it just to see if that actually fixes the problem.
If that resolves my issue -- or I find anything that does -- I'll certainly let you know. I've bought a new (to me) phone, but I'm not ready to give up the ghost on this one just yet.
Click to expand...
Click to collapse
Good luck fixing your 6P. I hope you get your audio back, and if you do, please report here so we would know a possible solution. If the daughterboard is damaged, shouldn't charging also be disabled since the type-c port is on the daughterboard? Maybe the board is partially damaged. Let's see what results you get after replacing it. I totally gave up on this phone and went back to my Nexus 5. 6P was a good phone, but had too many issues. Now it's just a paper-weight though.
Once again all the best for your DIY fixing.
As written here:
Hi guys, I think I solved the problem.
After a factory reset, my phone didn't play any sound from the speakers (neither the top nor the bottom), couldn't record anything from the mic, couldn't record any type of video with the stock Google camera ("Can't connect to the camera" or 0:00 seconds long videos) and YouTube acted weird sometimes.
I spent to days looking for a solution, and I understood that the problem was in the headphone jack. It remains triggered as if there were headphones inserted, someone resolved inserting and removing a real device in the headphone jack 3 or 4 times, but it was not my case.
I took the phone apart, physically disconnected the headphone jack and then rebooted the device. All the problems are gone! The sounds came back perfectly from both speakers, the camera can now record video and the mic is working. After this test I turned off the phone, reconnected the headphone jack, rebooted and still no problems. The headphone jack works fine too, and YouTube has no problems reproducing videos.
I even tried two factory reset and everything is still working fine! I hope to be helpful to someone, this procedure has solved my problem!
Foreigner here, please be kind =)
Hello everyone, good morning, good afternoon and good night!
Recently I have received some orders for laboratory supplies accompanied by a temperature Datalogger that performs the recording and storage of the temperature history for 11 days.
I've been researching the model and it is for single use and disposable (TempTale 4 USB - Dry Ice version by Sensitech)
I also discovered on some foreign websites that although there is software from the manufacturer to "unlock" the device for later reuse, the acquisition is not compensated due to the low value and the existence of other reusable models of the brand itself (Sensitech).
As this model came by surprise in my hands and no one has other uses for it, I decided to disassemble it and analyze its hardware. It has an Atmel controller that in my opinion could be reprogrammed to reset the programming or even unlock it for other uses.
If possible, I would like to count on the help of experts here on the forum for this. I believe I have come to the right place for this!
I leave some internal and external photos of the device for you guys
drive.google.com/drive/folders/1kON9AvEiRVNXjbIdCbus7JY8tHV3H36N?usp=sharing
It is worth mentioning that it has an interesting system that when connecting to the computer automatically generates a pdf report with all the data and graphs of the temperature record and another .ttx file that I still don't know what it is. Both are also in the drive folder for you to look at.
Hello there, your thread is kinda old by now but I am working on this myself.
Unfortunately I cannot provide you with the software for Sensitech dataloggers due to it being a bit risky, I do not want to get into legal trouble with Sensitech or getting fired for a hobby project. However even with the software you won't be able to reset one without somehow altering the chip contents. It will give you an error message that the dataloggers are meant for one time use only and cannot be reprogrammed.
The way to reset them is to manually erase the content of the ARM chip on the board, I don't know much about microchip programming but I have gotten it to work myself completely by accident. Probably by measuring each pin with an oscilloscope probe I have somehow corrupted/erased the programming on this chip. After that a red light started blinking and the word SET appeared on screen. After that I was able to reprogram them.
The TTX file is a more detailed database of the temperature logs, from which you can extract CSV files and do some sort of fancy graph displays and all that. The PDF is just for general overview.
You have a different model than the ones I get though. I have found that by shorting the Winbond chip and rebooting the device (shorting the battery connector briefly) it goes into some sort of error state. The screen will blink and every time you press Stop the actual temperature will be displayed on the screen. I do not know if your model has this too.
Is anyone still working on this? I have an interest in discussing repurposing a temp tale and would like to discuss