Hellow
I have Htc TyTn but recently the front buttons sometimes do not work
I move from 6.1 room to 6.5 but the problem has not fixed .
Is there any solution ?
.
i have a similar problem like you
replace flexible cable..it works for me..
Hi freind
which cable do you mean ?
Maybe it is only the flat cable issue, but sometimes the not working buttons is caused by the printed circuit board under the lower keyboard of the two (phone call start and stop, OK, windows and other keys ...).
If the problem is caused by that PCB, the keys not working is only the start of a nightmare that usually ends in an unusable phone...! That PCB is in charge of controlling the keys and the DISPLAY !!! When the PCB breakage will be complete, the keys will be not working and the display will remain completely white ! Try to google for WSOD (White screen of death).
Usually that board is named D-Pad PCB. If the cable replacement does not solve, try to replace the PCB.
What happens on the PCB ???? Exactly under the (- / OK) double button, aside the red key to close a phone call, there is a Programmable Logic Device chip produced by Xilinx. This chip has been programmed by HTC and used to control the keys and the display. As the PCB is very thin, pressing the keys, day by day, the chip gets desoldered. As the chip is a BGA it is quite impossible (very difficult) to resold it by hands!
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.
hi guys i need some hardware infos.
my short story: i got a hox+ stuck in a boot loop it was sure that it was not a software problem so i replaced the battery, that didnt fix the problem after some testing i found out that the problem comes from the power button cable, i pulled the connection off and the bootloop was gone, i repluged it and the bootloop returned. so i thought maybe the screws are fixed to strong, after several plugs & replugs and my decision to not put the top screw back inside and dont fix the other screws so strong, for a little bit more flexibility between the mainboard and the chase the problem went away and seems fixed.
But now a other problem appears, my top ear speakers stopped working, sometimes they work and sometimes not
so my questions are:
1. has the power button flex cable anything todo with the function of the top ear speakers?
2. is it possible the speaker didnt connect probably because the top screw is missing?
3. is this w*w.ebay.com/itm/New-HTC-One-X-S720e-G23-Power-On-Off-Button-Flex-Cable-/251492842139?pt=US_Cell_Phone_Replacement_Parts_Tools&hash=item3a8e243a9b compatible with the hox+ (international)?
4. is this w*w.ebay.com/itm/HTC-One-X-Ear-Speaker-w-Adhesive-Replacement-Repair-Part-OEM-/271110152540 the same as this w*w.ebay.com/itm/HTC-One-X-Plus-Ear-Speaker-w-Adhesive-Replacement-Repair-Part-OEM-/281124922511 or are they different?
sorry for my bad english, i hope u can understand me anyway
hi guys i need some hardware infos.
my short story: i got a hox+ stuck in a boot loop it was sure that it was not a software problem so i replaced the battery, that didnt fix the problem after some testing i found out that the problem comes from the power button cable, i pulled the connection off and the bootloop was gone, i repluged it and the bootloop returned. so i thought maybe the screws are fixed to strong, after several plugs & replugs and my decision to not put the top screw back inside and dont fix the other screws so strong, for a little bit more flexibility between the mainboard and the chase the problem went away and seems fixed.
But now a other problem appears, my top ear speakers stopped working, sometimes they work and sometimes not
so my questions are:
1. has the power button flex cable anything todo with the function of the top ear speakers?
2. is it possible that the speaker didnt connect probably because the top screw is missing? did the ear speaker needs a connection to the chase for working?
3. is this w*w.ebay.com/itm/New-HTC-One-X-S720e-G23-Power-On-Off-Button-Flex-Cable-/251492842139?pt=US_Cell_Phone_Replacement_Parts_Tools&hash=item3a8e243a9b compatible with the hox+ (international)?
4. is this w*w.ebay.com/itm/HTC-One-X-Ear-Speaker-w-Adhesive-Replacement-Repair-Part-OEM-/271110152540 the same as this w*w.ebay.com/itm/HTC-One-X-Plus-Ear-Speaker-w-Adhesive-Replacement-Repair-Part-OEM-/281124922511 or are they different?
hi all, i have a spring samsung s3, it recently had some water damage but not full blown submerged in water. it still turns on and all buttons and functions work fine. however the speaker seems to be blown, i can hear a hiss noise from it and when i do the service menu quick test, no sounds comes out nor does the LED notification light up. pushing volume up and down buttons still work.
anyone have any idea if it may be the audio chip damaged or some sort of flex cable? i'm hoping its a part I can order and replace myself. I have opened up the phone and know how to take pieces/cables a part (aside from chips on the motherboard... may have to pass on that)
Hi everyone,
NOTE: volume buttons fix I mention below is superseded, see my reply to this post.
In the following post I was unable to enter recovery or fastboot.
[SOLVED][WCIF] patch0.xml etc for bricked HDX 7 thor? Have QDLoader 9008 access
Fortunately a cable and flashing software solved the problem but the underlying problem turned out to be Hardware (at least).
Only after I got a working OS back on this tablet did I determine that the volume buttons didn't work at all.
But I found by stretching the rubberized case off of the right edge of the screen I presumably compressed the audio subsystem hardware connections in just the right way and this got the headphone jack and the volume buttons to start working again.
With the rubberized case pulled away from the edge I had to cut away the headphone jack area so headphone plug will still fit. Please see better solution in my reply below.
See attached image.
Fix unresponsive buttons and sound without modifying the tablet
fufu508 said:
Hi everyone,
In the following post I was unable to enter recovery or fastboot.
[SOLVED][WCIF] patch0.xml etc for bricked HDX 7 thor? Have QDLoader 9008 access
Fortunately a cable and flashing software solved the problem but the underlying problem turned out to be Hardware (at least).
Only after I got a working OS back on this tablet did I determine that the volume buttons didn't work at all.
But I found by stretching the rubberized case off of the right edge of the screen I presumably compressed the audio subsystem hardware connections in just the right way and this got the headphone jack and the volume buttons to start working again.
With the rubberized case pulled away from the edge I had to cut away the headphone jack area so headphone plug will still fit.
See attached image.
Click to expand...
Click to collapse
Update:
It turns out on another site ("i fix it") that discusses various handheld devices' hardware someone else identified a better solution that doesn't require physically modifying the tablet.
I found that solution during a search after stretching/distorting the case as described in the post above stopped working.
Basically the soft material this tablet is made out of warps easily and applying a stiff back solved the problem for mine. I used a piece of thin laminated wood available local home improvement stores. I taped that on as seen in the pictures. Before taping the board on, I taped a small cable tie to the back of the case to add a little pressure point approximately an inch in from the top and side edges of the case nearest the headphone jack. That area appears to be where the connection lies that's required to keep the headphone jack and volume controls working.