android tv 55k2a iffalcon display flickering issue - Android Q&A, Help & Troubleshooting

Hi all,
need some help on fixing my out of warranty android TV
After some recent ota update started facing display issues..
Horizontal lines come for a second and any thing on screen create a double image then get normal and then again same flickering repeats..
on this page have video of tv display problem : https://twitter.com/i/status/1333483228804521986
OTA update was from nougat to oreo build 55K2A-V8-T658T01-LF1V562
this tv has Panel ST5461D04-3
Already tried these options to fix it :
a) manually with usb install, downgraded back to old nougat version 55K2A-V8-T658T01-LF1V364
b) manually with usb install, upgraded to further latest oreo 55K2A-V8-T658T01-LF1V814
c) figure out service menu code using code 1 9 5 0 for this TV in that tried Shop Reset, Reset All , NVM reset..
d) service center registered request but nobody came yet
e) android os level factory reset
None of above options solved the issue...Some thing changed in TV with OTA update, not able to figure out rollback..
Please suggest further possible options to TRY OUT on this ?
Software level can try any thing..will not be comfortable opening hardware..
Thanks,
N Yadav

hi all, i almost solved this issue my self at home...
just updating so that helpful to others who read this post in future.
Please try this at your ow RISK. I am not expert on this topic.
I followed one youtube video
90% problem solved. Still there is 10% double image sometimes..not perfectly fixed..
What i done :
I put tape on Left side FFC cable(one comes first from side we plug power cord)
Right side FFC when alone connected then half picture was coming fine
with no double image so learnt issue is Left FFC.
I have no idea on what pins to block for left FFC cable...
after leaving 5-6 pins left side(from direction of power cord input plug) on left FFC cable.
i put a tape may be around 10 pins covered by tape(not sure exact)
I am attaching service manual for this TV.
If any one can GUIDE exact pin nos from left on left side FFC cable i should block with TAPE ?
Thanks,
N Yadav

Guys any update on Iffalcon Model 55k2a software

Related

[Q] Dock options not launching

Hi Guys,
I have a 1.8.3 AT&T Atrix (update from 1.5.7 with retainroot) other than that it's pretty much stock. However since updating i've noticed when I plugin to my Multimedia dock nothing pops up to launch - not even the clock option when theres no detected HDMI output.
However when the TV is setup to that output I do see the "M" logo floating around - I can't see how to manually launch any of the AT&T apps to test the functionality either!
Please help
UPDATE:
Usually the remote control I can manually launch the Entertainment Mode (Top left button) but when selecting webtop it just goes back to desktop, still no auto launch when plugging into dock.... must be something missing. Only app I've uninstalled is blockbuster.
theres a funky issue with the adapter being plugged into a power strip. If that applies, try plugging it directly into an outlet and see if that works.
mrphil101 said:
theres a funky issue with the adapter being plugged into a power strip. If that applies, try plugging it directly into an outlet and see if that works.
Click to expand...
Click to collapse
Thanks for the suggestion but did not change my situation. Moved my dock from bedroom TV to my monitor and getting same results (but able to test things much faster
It's clear to me when inserted into the Dock, the phone notices and changes the screen output right away (M logo on TV) and the screen on the phone "refreshes" but the application which launches and asks you what you want to do doesn't launch.
Damn thing - driving me batty now, I might just re-SBF and see how I go!
UDPATE: I think I see the problem, during my 1.8.3. update it failed on the radio, according to MANFIEST.MF that is not the last thing it applies, the very next items are webtop/etc
going to try modify the MANIFEST.MF & updater-script to skip updating the radio band and apply the update.zip again hopefully it'll continue patching the webtop mod and it will function again.
All done & fixed, turns out that was the problem and the solution. Weird, wonder if anyone else had the problem where the baseband image would not apply when doing the 1.8.3 update.
If so, see above, you can modify your update-script to skip that step and then manually apply HSUPA update separately. Once again not sure how I got into this mess, potentially having HSUPA update on before 1.8.3 upgrade was my problem in the first place...
I have the same issue with the official orange fr 4.2.0 (2.2.2) rom after flashed it with rsd lite... I tried to flash other sbf, but nothing works, I can't use my laptop and hd docks anymore...
Do you know a way to correct this issue ?
Stremon said:
I have the same issue with the official orange fr 4.2.0 (2.2.2) rom after flashed it with rsd lite... I tried to flash other sbf, but nothing works, I can't use my laptop and hd docks anymore...
Do you know a way to correct this issue ?
Click to expand...
Click to collapse
Anyone ?

[Q] Possible to enable flashlight with back camera broken?

Hello,
I've got a rooted Android device (Motorola Photon Q running stock ICS 4.0.4) which happened to have rear camera broken - specifically - the camera connector on motherboard . Before, all the apps I tried were able to switch on the flashlight to use as a torch. Since the camera went broke, none of them work. When opening stock Camera application, it shows front facing camera view. The switch is grayed out. It used to show an error like "failed to initialize" about back camera before showing front camera view, but it does not anymore, after trying to fix the connector I've written my own application to at least debug it and find out where the problem lays, and tried a few ways to light the flash, but no luck.
The question is:
Does anyone know of any way to bypass the checking of back camera (starting it) and going directly to switching on the flashlight? Or is there any general or device-specific way to enable flashlight without camera working (but plugged in, just a few pins of total 32 are lost)? I can provide any specific logs, files or parts of the ROM
I will be getting another motherboard in a few months probably, but before then, I want to challenge this. As of ideas, I was searching and thinking of either creating sth like DroidLED for my device (however I dont know if such approach is still valid under ICS) or somehow switching hardware addresses of back and front camera, so the front one would act like a back one. Both hard or impossible, but maybe you guys will show me the way
micx_pl said:
Hello,
I've got a rooted Android device (Motorola Photon Q running stock ICS 4.0.4) which happened to have rear camera broken - specifically - the camera connector on motherboard . Before, all the apps I tried were able to switch on the flashlight to use as a torch. Since the camera went broke, none of them work. When opening stock Camera application, it shows front facing camera view. The switch is grayed out. It used to show an error like "failed to initialize" about back camera before showing front camera view, but it does not anymore, after trying to fix the connector I've written my own application to at least debug it and find out where the problem lays, and tried a few ways to light the flash, but no luck.
The question is:
Does anyone know of any way to bypass the checking of back camera (starting it) and going directly to switching on the flashlight? Or is there any general or device-specific way to enable flashlight without camera working (but plugged in, just a few pins of total 32 are lost)? I can provide any specific logs, files or parts of the ROM
I will be getting another motherboard in a few months probably, but before then, I want to challenge this. As of ideas, I was searching and thinking of either creating sth like DroidLED for my device (however I dont know if such approach is still valid under ICS) or somehow switching hardware addresses of back and front camera, so the front one would act like a back one. Both hard or impossible, but maybe you guys will show me the way
Click to expand...
Click to collapse
jast relax and wait new motherboard.
If I would want to give up, I would do it already But maybe someone will shed some light on this problem?

Review - Leelbox Q2 TV Box android 6.0/2G/8G/64Bits/Amlogic S905X

I noticed there weren't many posts on Leelboxes on XDA so I'll provide some quick input for anyone who may search for a review or want to ask questions.
Recently I bought a Q2 on Amazon and finally set it up last night.
https://www.amazon.com/gp/product/B01N63M03X/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Opening the box/contents
-The box had some wear on it but overall in decent shape
+Comes with power cable, hdmi, remote (no batteries)
-The box had a fairly strong plastic/soldering smell and ins't very appealing visually
Setup
- Plugging in the power starts up the device so I had everything (HDMI, mouse/keyboard) already plugged in/No physical power button
++ Quick boot up and short animation screen
-/+ Decent launcher screen probably depends on preference
-/+ Needed to adjust the screen area down to 90% as it was displaying outside of my viewing area
- Remote sluggish
+ Wireless USB keyboard and mouse are plug and play
- Still haven't figured out how to turn off the on-screen keyboard as the settings menu is device specific
- Playstore and adding Google account FC'd the first time I opened it
Customizing
+++++ Installed SuperSu from Playstore and went through the "normal" non-recovery install process successfully!
+ Installed Leanback Launcher/Google TV v1.14 (newer versions FC) APK from APK mirror and home launcher switcher
++ Kodi and addons preinstalled and setup
-Google Now launcher has icon text issues (words are cut off)
+Installed hidden settings
Performance
+ 5ghz wifi running well
- Some UI lag/stuttering
- App install a little slower than hoped
- Device comes with a memory cleaner button on the provided launcher. Once mem usage hits 80%, stuttering gets annoying. Installed memory cleaner and still evaluating.
+ Video very smooth in Kodi and Youtube
More to come but hope this helps.
How is the leelbox Q2 running? Have you tried miracast with a Windows10 laptop? Looking for a device to primarily do this.
someguyatx said:
How is the leelbox Q2 running? Have you tried miracast with a Windows10 laptop? Looking for a device to primarily do this.
Click to expand...
Click to collapse
Still running well. Mainly use it for Kodi and YT. I found an older version of Nexus Player launcher that works (except suggestions) and looks better than stock.
One complaint I do have, I couldn't get any emulators to recognize USB gamepads. If you want to do any of that, I'd stay away.
I haven't tried Miracast at all but I will if you're still interested. Let me know.
Hey there... I have a question for you. How's the video playback on your box?? I really this box, especially since it has Bluetooth and there is hardly any lag, however, I have had bad luck with it from the get-go. My video playback is horrible! The screen flickers and goes really dark when the scene is shot at night or it's indoors. Sometimes my tv goes black and if it weren't for the captioning, you'd think it's just off. Then the image perks up when the scene is outside or a really bright shot. It really does a number on my eyes as it's a constant thing. I did reach out to their customer service and they have been responsive and sent over instructions to try and fix this, but that hasn't worked. I even got the box replaced, but the issue persists. I'm thinking maybe it's a setting at this point. Would you happen to know if there is a fix to this or is there anything you would suggest? Thanks in advance!
heyitsmaya said:
Hey there... I have a question for you. How's the video playback on your box?? I really this box, especially since it has Bluetooth and there is hardly any lag, however, I have had bad luck with it from the get-go. My video playback is horrible! The screen flickers and goes really dark when the scene is shot at night or it's indoors. Sometimes my tv goes black and if it weren't for the captioning, you'd think it's just off. Then the image perks up when the scene is outside or a really bright shot. It really does a number on my eyes as it's a constant thing. I did reach out to their customer service and they have been responsive and sent over instructions to try and fix this, but that hasn't worked. I even got the box replaced, but the issue persists. I'm thinking maybe it's a setting at this point. Would you happen to know if there is a fix to this or is there anything you would suggest? Thanks in advance!
Click to expand...
Click to collapse
Hi,
Kodi seems a bit darker so I have an display setting on my TV that I toggle to vibrant and its much better. HBO Go feels the same. Other than those though, Youtube and Netflix are fine.
Any chance your HDMI cable is bad?
if it's bricked but usb burning tool recognize it but it's stuck at 2% with Romcode/Initialize DDR/Read initialize status/USB Control setup error, do someone know how to unbrick it?
washwash said:
if it's bricked but usb burning tool recognize it but it's stuck at 2% with Romcode/Initialize DDR/Read initialize status/USB Control setup error, do someone know how to unbrick it?
Click to expand...
Click to collapse
How did you brick it and what are you trying to flash on it now?
xnatex21 said:
How did you brick it and what are you trying to flash on it now?
Click to expand...
Click to collapse
trying to update with stock updated rom using the sd cart method because the rom was instable as hell and i was not able to watch a movie without problem for longer than half an hour, then i tried to install the same rom using the usb burning tool (2% error), then again with the usb burning tool i've tried this rom with the same results...
no video, i cant enter recovery, but now usb burning tool recognize it without even the need to push the reset button when i plug in the usb
washwash said:
trying to update with stock updated rom using the sd cart method because the rom was instable as hell and i was not able to watch a movie without problem for longer than half an hour, then i tried to install the same rom using the usb burning tool (2% error), then again with the usb burning tool i've tried this rom with the same results...
no video, i cant enter recovery, but now usb burning tool recognize it without even the need to push the reset button when i plug in the usb
Click to expand...
Click to collapse
I haven't tried flashing a new rom for this device yet so I may not be the best to help you. But from what I've read, the USB burning tool is your best bet. From experience, it may be a good idea to try flashing with another computer. Also, re-download the imgs.
xnatex21 said:
Hi,
Kodi seems a bit darker so I have an display setting on my TV that I toggle to vibrant and its much better. HBO Go feels the same. Other than those though, Youtube and Netflix are fine.
Any chance your HDMI cable is bad?
Click to expand...
Click to collapse
Hello! Sorry for the late reply, but I have changed HDMI cables twice and changed ports on the TV. Also, I have used an older TV I have with this box and it just doesn't work. The video just bounces from light to dark when on Netflix or streaming any other type of video including YouTube. I have attempted to play with any settings on the box but nothing changes. Kinda bummed, oh well right?
heyitsmaya said:
Hello! Sorry for the late reply, but I have changed HDMI cables twice and changed ports on the TV. Also, I have used an older TV I have with this box and it just doesn't work. The video just bounces from light to dark when on Netflix or streaming any other type of video including YouTube. I have attempted to play with any settings on the box but nothing changes. Kinda bummed, oh well right?
Click to expand...
Click to collapse
I read something in another thread where the person created a new ROM for devices LIKE ours. I believe some have used it but can't say if it works. Seems your issue is common:
https://forum.xda-developers.com/search/thread/3513805?query=dark
Hi,
In product description it said this is dual wifi enabled (2.4 and 5Ghz) box. So I installed internet wifi router with 2.4 and 5GHz possibility, and Q2 Pro box pick up just 2.4Ghz signal.
Then I turned off manually 2.4GHz possibility in router and Q2 Pro box didn't see any wifi network, while my LCD and PS4 was connected on 5GHz without problem.
So, my question is, how to enable receiving 5Ghz wifi signal on Q2 Pro box?
Thank you
I've been having some trouble rooting the Q2 Mini Leelbox, wondering is that a different model than the Q2? i am also having an issue changing the default home launcher on my box, it seems like the Zonglauncher that is installed on it wants to be the only proprietary launcher option an because i cant gain root, I can't run effin system app deletion.
I figured kingroot would do it, but it has not been of any help so far. Shoot I've googled Root Leelbox Q2 mini and pretty much theres nothing out there. must not be a very popular box. now that i noticed it is rockchip, i'm a little disappointed with it, might even return it, but it does have 2G/8G for only 43 Dollars on amazon.
did anyone install recovery twrp and Magisk?
WowTheDog said:
I've been having some trouble rooting the Q2 Mini Leelbox, wondering is that a different model than the Q2? i am also having an issue changing the default home launcher on my box, it seems like the Zonglauncher that is installed on it wants to be the only proprietary launcher option an because i cant gain root, I can't run effin system app deletion.
I figured kingroot would do it, but it has not been of any help so far. Shoot I've googled Root Leelbox Q2 mini and pretty much theres nothing out there. must not be a very popular box. now that i noticed it is rockchip, i'm a little disappointed with it, might even return it, but it does have 2G/8G for only 43 Dollars on amazon.
Click to expand...
Click to collapse
It must be a different version. If I recall correctly, I didn't have to install anything to get root. I just ran a root checker and confirmed I was good to go.
I also was able to install any launcher I wanted. But in the end, their launcher was good enough for the apps I use (Kodi, Netflix, HBO Go, Youtube).
salser0 said:
did anyone install recovery twrp and Magisk?
Click to expand...
Click to collapse
No. I don't think there is a TWRP version for this device.
I ended up shipping it back for a refund. Really was quite a pos if I ever did see one. Made me pretty angry tbh, it was a rockchip anyways I mean it did have 2g/8g but certainly performed worse than some 1g/8gs ice bought in the past.
i have the mini
*works fine ..no lag or stuttering
*only problem is weak wifi with no 5ghz support
#im looking for info regarding using a d'link wifi dongle with it to boost wifi
to everyone this box is prerooted
install any app and if it requests root it will be given root automatically without even a toast message
you can enter recovery and factory reset or flash updates or even flash update zips by inserting a needle / pin / toothpick into the headphone jack amd pushing down at which point you will feel the button click...keep the button in then pull out the power cord and put it back in and it will boot to recovery ...you can rename supersu as update.zip amd flash it from sd card to replace root or get root management apk installed ..you can also install supersu apk directly from playstore
you can enable developer settings by usual means by pressing on version number in settings/about
i am looking into solving wifi problem first ...then i will try to flash custom images
my first workaround is to boot Ubuntu from sd card and install opemelec or omc or similar
*reason is amazon prime video fails playback in both apk or browser
*netflix is working fine through apk
*kodi is running smoothly
by installing linux through sd card i will try to get better wifi by wifi dongle and then by getting playback working for amazon video ..if i succeed i will create a thread and a post a link and proceed from there ..i think we might be able to port or flash some other custom firmware too ...i will try it after Ubuntu....
hello
i just buy a leelbox q4 plus and i searsh in the net for root this android tv box but i dont found , it s this box https://www.amazon.com/dp/B07P7MFR5L/ref=emc_b_5_t
maybe it s not possible but if it s possible maybe you help me for that thank for advance

Urgent Help! Back / Home / Recent Buttons not working

Hello Guys
I bought my Z5c in November 2015. Until Thursday it had been working fine. We all know about battery drain and all that but actually the phone was working. I personally like the phone a lot.
On Monday July 31st, I updated to Nougat 7.1.1. Everything was OK. On Thursday Morning the back / home / recent buttons were not working.
I already tried:
- Safe mode (the problem is still there)
- Factory reset
- Software repair (Xperia Companion)
- Flashed the phone and changed CDA to another region. I could not downgrade
I don't think this is a hardware issue because the buttons work in the lockscreen and in landscape mode. It just doesn't work in portrait mode.
This made the phone unusable. My phone company gave me a Sony Xperia XA for $47 for now.
The Z5c was purchased unlocked.
I really need your help please
Thanks
What can I do in this case? I don't think there's a Sony repair center in my country
hi... I have exact same problem..! plz help...
Plz help someone
.....
I am running lineage 14.1 and still there is problem. It works OK in recovery
Hi
I've got the same issue with my wife's Z5C. The navigation buttons are totally unresponsive! Phone is not rooted, so I have no idea if they work in recovery or not. But the buttons DO work if I put phone into landscape mode with Sony logo to the right, but not with the logo to the left?!?
I'm stumped here, so please provide some feedback please...
Meanwhile I'll reset phone with PC Companion and maybe later I'll downgrade a few builds...
//Johan
UPDATE:
Downgraded to .160 (Generic AU) but no luck. I think this phone is toast, but the weird thing is that according to built-in diagnostics, the surfaces where the back/home/recents button are located are all functioning properly. Any thoughts?
The easy solution is to install an alternative from play store and see if it works or if you are still covered by the warranty just send it to Sony...
The 'get your hands dirty' option...
Has anyone tried flashing their phone using the flashtool http://www.flashtool.net/ ?
It Sounds to me like you are facing a software bug that would disappear if you perform a clean installation of android...
What exactly happened? Provide us with more info....
unfortunately, i act in assumption, this is a hardware issue like seen often on the z3c. The digitizer is broken at these positions. it happens often at the home/back buttons and at the pull down menu.
You can verify this by activating the glove modus (hope this is the right translation of the german Handschuhmodus) which indicates, where exactly you are hitting the touchscreen.
- fix is to replace the touchscreen.
- workarounds are to activate display rotation (and then rotate so that the buttons are appearing at the upper (right) side of the display
- activate the glove modus - i can actually still hit the buttons at their corners
-use the "Back Button" app to generate additional menu buttons.
- move the buttons with Google ADP tools
(i'm actually not allowed to post links, google for it in the official z3c Sony support forum)
Did you ever resolve this? I've come across the same problem (running stock Android 7.1.1).
Went through all reset procedures, safe mode, screen tests etc.
Seeing the same result as you - this area of the screen works fine when locked, but when unlocked it's unresponsive.
I've done a full factory reset on it, just to determine if that'll fix it - no luck.
I would love to know more about why this is thought to be a hardware issue, when the hardware concerned works fine to unlock the phone.
My next step will be flashing a custom ROM, see if that fixes it. Any other hints / tips / clues / suggestions more than welcome!
eduardo4188 said:
Hello Guys
I bought my Z5c in November 2015. Until Thursday it had been working fine. We all know about battery drain and all that but actually the phone was working. I personally like the phone a lot.
On Monday July 31st, I updated to Nougat 7.1.1. Everything was OK. On Thursday Morning the back / home / recent buttons were not working.
I already tried:
- Safe mode (the problem is still there)
- Factory reset
- Software repair (Xperia Companion)
- Flashed the phone and changed CDA to another region. I could not downgrade
I don't think this is a hardware issue because the buttons work in the lockscreen and in landscape mode. It just doesn't work in portrait mode.
This made the phone unusable. My phone company gave me a Sony Xperia XA for $47 for now.
The Z5c was purchased unlocked.
I really need your help please
Thanks
What can I do in this case? I don't think there's a Sony repair center in my country
Click to expand...
Click to collapse

reverse camera stopped working

Hello,
Today reverse camera stopped working on my MTCC device (see attached pics).
When I put the car in reverse I get a green screen before the device boot up, and yellow sign after boot up.
Checked camera and cables on an external monitor, all fine. Must be something wrong with the device.
All other functions are fine.
Anyone had a similar issue? Suggestions before removing the device to check back connectors?
Thank you.
EDIT: This morning picture appeared for a few seconds, after that it just showed for a split of a second and then yellow sign. Later it does not show at all again.
EDIT2: removed the unit and checked connectors, no help. Tried second video input with the second camera and this other video input does not work also.
It seems that external video input is disabled and I can't find the way to activate it. sometimes reverse camera image appears for a split of the second so it makes me wonder that there is some sort of "lock" for video input.
Playing videos from sd card with video app works fine.
Installed different ROM and issue is still there.
Hello,
what is your car model and how/where is connected your rear cam to 12+ and ground? Back Light?
I would say your HU is defective likely a bad solder joint on the video mixer/switch if both inputs behave the same. If it starts working again when the temperature changes that is the sign.
Yeah, it must be a bad solder joint. I'll try to disassemble it one day and check soldering but for now, I just bought an additional small display for the camera, works ok but takes little more space
grgart said:
Hello,
Today reverse camera stopped working on my MTCC device (see attached pics).
When I put the car in reverse I get a green screen before the device boot up, and yellow sign after boot up.
Checked camera and cables on an external monitor, all fine. Must be something wrong with the device.
All other functions are fine.
Anyone had a similar issue? Suggestions before removing the device to check back connectors?
Thank you.
EDIT: This morning picture appeared for a few seconds, after that it just showed for a split of a second and then yellow sign. Later it does not show at all again.
EDIT2: removed the unit and checked connectors, no help. Tried second video input with the second camera and this other video input does not work also.
It seems that external video input is disabled and I can't find the way to activate it. sometimes reverse camera image appears for a split of the second so it makes me wonder that there is some sort of "lock" for video input.
Playing videos from sd card with video app works fine.
Installed different ROM and issue is still there.
Click to expand...
Click to collapse
I had a similar problem, the following solved it for me.
Go to SYSTEM settings, on my unit there was a menu item marked "Protocol Parameter settings" select this and you should see lots of settings relating to reverse camera, sensor and associated CANBUS options. Look for an option like "Reverse video resolution setting" and choose NTSC/PAL. After I changed that, all my video in started working again properly.
Hope this helps!
Hello sir ,
Are you fix this problem ? And how you fix it ? And there is photo to see where the soldiers you talk about so i can check and fix it in my head unit?
Thanks in advance
ipgoogle said:
Hello sir ,
Are you fix this problem ? And how you fix it ? And there is photo to see where the soldiers you talk about so i can check and fix it in my head unit?
Thanks in advance
Click to expand...
Click to collapse
Not mtcb...looks like MTCD
marchnz said:
Not mtcb...looks like MTCD
Click to expand...
Click to collapse
Yes it’s MTCD my fault
But can you help me and show me where the filter or resistance.. etc , any thing will relate to show image for reverse camera in screen of HU ? On the photos of mother board I attached it in the post please ?
OR if you have map to know everything in the mother board whats for?

Categories

Resources