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I have been using CRC 12.11 for a while. A strange problem started all of a sudden. My screen went white although it is working. Soft reset didn't solve the problem. Hard reset solved the problem for a while and then it came back. I noticed this at the time it happens. While everything is fine, the screen fades out, a few lines like scratches appear and then the screen stays white. I hear system sounds, the phone rings but no display. What has caused this?
I flashed another ROM but when my phone restarted it was still white. I hard reset and now I am waiting. If it reappears, it means it is a hardware problem right?
andreasy said:
I have been using CRC 12.11 for a while. A strange problem started all of a sudden. My screen went white although it is working. Soft reset didn't solve the problem. Hard reset solved the problem for a while and then it came back. I noticed this at the time it happens. While everything is fine, the screen fades out, a few lines like scratches appear and then the screen stays white. I hear system sounds, the phone rings but no display. What has caused this?
I flashed another ROM but when my phone restarted it was still white. I hard reset and now I am waiting. If it reappears, it means it is a hardware problem right?
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Click to collapse
I had this same weird issue once on my rom, i think it's because of the Big storage bug.. Flashed OEM rom and went away.. only saw it once!
I reflushed several ROMs that I used to have before without problems and still have the same. I can't install OEM, I think it's because of the bootloader version but I don't remember exactly the procedure to correct this and I don't know if it's worth the effort in downgrading to OEM.
Another thing I just noticed is that the screen is not aligned in the center. There is a small gap on top of the screen as if the image has moved downwards. Maybe this is the cause of the problem. Noone had similar issue? I don't believe it has to do with big storage because I have been using it fot a while and this never happened before, not even once.
Any ideas will be apreciated as my only choice right now is to buy a new phone.
same thing
i´ve been looking around and some people say is because the magnet in the pouches, affect in some way to the screen ribbon or something like that.
that is a common problem with the hermes, if u search the forum u'll find a couple of threads like this.
it's a hardware problem, next symptoms will be the green/red buttons and d-pad stoping to work
I know theres a few links in the FAQ about the white screen issue, its fixable in some cases.
problem solved!!!
i just took it apart, one of the ribbons which connect the green and red buttons was kindda folded also the connectors , so i just blow some compress air and tried to unfold the ribbon, put it back together and voila! like new. Just be carefull cause it´s like fragil.
same exact problem word for word
The same exact thing happened to my hermes. I guess I can attempt to put mechanical skills to work and fix this problem.
I just bought a PX5 unit, which seemed to be working perfectly until I finished installing it into my car and now it has become unresponsive with a black screen and a yellow rhombus with an exclamation point in the middle (unable to upload image as new user).
If I turn off the ignition, it will turn the stereo off and the android screen briefly shows before going into sleep. None of the buttons are allowing me to get past the screen and in to android. The reset button seems to do nothing, android is definitely running in the background, just unsure as to why this screen will not close. Any ideas?
Hi, I think I saw a yellow rhombus with an exclamation point when I was installing my radio and rear view camera was not connected to the radio. I think that it is a warning about missing video signal when radio is displaying live feed from a rear view camera.
So, one explanation for your issue could be that the radio thinks you are reversing, and the rear view camera is not connected to the radio. If I understand it right, radio can switch to rear view camera display mode based on two conditions 1) canbus information 2) +12v trigger signal.
For the condition 2), you could check that nothing is unintentional connected to reverse detect wire. If that does not help, then you could perhaps try to disable reverse view feature in the configuration menu before installing the radio to the car and/or find a working canbus configuration settings.
Please notice that I'm a beginner with Android head units and your problem might well be something totally different!!
Thanks for your reply. Some of your post seems to relate to my issue definitely, I think it is linked to the rear view camera which is currently disconnected. However I am unable to get into any configuration options. None of the buttons/resets I try get me past the exclamation screen, I can only see android once I turn off my ignition when it tells me it is closing down. None of the various reset button combinations seem to do anything with my head unit either, can't seem to reset it properly. Its strange, I will reattach the camera tomorrow and see if that brings any joy. I don't know anything about this stuff myself but I am wondering if I did something to the head unit to brick the non-android side somehow.
Edit: Unfortunately reattaching the camera did not change anything.
Update. I have managed to find a way in to the Android side if I connect my phone via bluetooth to the stereo, it then lets me use the split screen function via the top bar menu to put the warning screen other screen to the side, however whenever I touch the screen or attempt to use the android interface, my stereo goes back to the warning screen, none of my inputs via the stereo buttons or the touch screen seem to be registering with the Android side? Very confused. I have also tried as many button combination resets I can find and I have not been able to successfully get into the recovery menu, or any change except rebooting.
Was your unit professionally installed?
Also, what did the re-seller suggest when you contacted them for support?
No the unit was not professionally installed. I am not sure how I've become stuck with the problem. I made some minor changes in factory settings but nothing I thought would of caused this. The seller is yet to respond and its been a couple of days, but I have requested the hardware reset methods for this unit or any other solutions.
deano35 said:
No the unit was not professionally installed. I am not sure how I've become stuck with the problem. I made some minor changes in factory settings but nothing I thought would of caused this. The seller is yet to respond and its been a couple of days, but I have requested the hardware reset methods for this unit or any other solutions.
Click to expand...
Click to collapse
Check the reverse wire on the back of the unit...if necessary disconnect it to ensure no reverse signal is received.
If your unit can boot into android normally then you will have to figure out why the reverse wire is receiving signal .
Check your connectors to avoid any of them to be loose.
Enviado desde mi SM-G950F mediante Tapatalk
Everything has been disconnected from the unit except the power cable to car and and canbus, from what I can tell nothing is loose. Unit will not boot without the canbus box whatsoever, not sure if that is meant to happen.
deano35 said:
Everything has been disconnected from the unit except the power cable to car and and canbus, from what I can tell nothing is loose. Unit will not boot without the canbus box whatsoever, not sure if that is meant to happen.
Click to expand...
Click to collapse
Yes, canbus decoder need to be connected for power up the HU. If you dont need the decoder box you need rewire the harness.
I think I am going to have to request a refund and return it. Still no reply from the reseller and I am not sure what else I can try, everything that is not needed to power it has now been removed. I can't send links or else I would update the thread with a video of the touch/physical buttons being completely unresponsive even when I manage to get to Android. The unit has definitely developed a fault and I am unable to reset it. Admittedly it could be my fault somehow as it was working for the first few boots, but unless they give me something to try I am just going to have to send it back.
Quick bump. Has anyone got any further ideas? I bought off Aliexpress so contact with the seller is slow and painful, they do not seem to understand the issue and just keep telling me to disconnect all wires and reconnect. Which has been done many times. If anyone wants to post a link to the video for me I would be happy to send them it privately.
deano35 said:
Quick bump. Has anyone got any further ideas? I bought off Aliexpress so contact with the seller is slow and painful, they do not seem to understand the issue and just keep telling me to disconnect all wires and reconnect. Which has been done many times. If anyone wants to post a link to the video for me I would be happy to send them it privately.
Click to expand...
Click to collapse
I would start a dispute with them. I had a device that they sent with similar problems and plenty of issues, which they would not help with or would not understand. Best option is to dispute to get a new device or a full refund. Could you send the video?
xLeviNx said:
I would start a dispute with them. I had a device that they sent with similar problems and plenty of issues, which they would not help with or would not understand. Best option is to dispute to get a new device or a full refund. Could you send the video?
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Click to collapse
Yeh I have a dispute open currently, just was hoping it would inspire the seller to actually offer up a working way of resetting the device. Had to add link below seperately as needed to be ten or most posts.
https://www.youtube.com/watch?v=ujHacKESAT8&feature=youtu.be
The stereo defaults as the warning image black screen and I can only get android up using the multiwindow button with a long press. Then the android side will not register any input and will keep trying to put the black screen to the front.
Update: I have been told by Aliexpress I can have a partial refund and keep the unit, or a full refund if I return to China. Anyone have any ideas how I would go about resetting the unit if I took the partial refund? To be honest I think my only option is to return it and get the full amount back but any ideas would be welcome! Shipping to China and awaiting a refund is going to take weeks, would rather just get it working if possible.
deano35: any progres? I have the same problem as you. This is my post from PX5 MTCD/E Head Unit Discussion Thread
" Hi , I have https://s.click.aliexpress.com/e/DtwdJIt its px5, Mtce_gs_v2.90c. Now I have a little problem with rear camera. I bought reverse camera and tried to connect it into front camera input(I was curious how it would look like) and since then its stuck on camera view. Even after disconnecting camera. Only solution was disable "prohibit reverse" in factory settings menu, but with "prohibit reverse" disabled is obviously not showing reverse camera when I gear the reverse down. Everything is shown in this video. https://photos.app.goo.gl/XbYUHApzT8qTezkq6 Thanks for any advice. "
Take a look on the video, its similar as yours.
Hi guys,
I just bought a car unit android 8, but the screen sometimes (90% of times) looks flipped left-to-right. Sometimes is also flipped upsdide-down+left-to-right.
And sometimes I get the screen working as it should be, flawlessly, until I do not restart the car.
The defect appears from the beginning, right from the initial logo, and it remains also if I try to reset the unit. Also when I get the "boot" text menu, it appears flipped as everything. (edit - in addition, the touch layer still working in the right way, so I cannot easily understand what I'm touching on the screen, and this makes everything more complicate)
The unit is a px5, 4GB RAM, 8-core, the MCU is MTCE_XRC_V2.93_1.
I didn't already tried to overwrite the android files, because I'm trying to get some assistance from the producer. Anyway the product is coming from China, so I guess I will have to do it by myself. Until now, I rebooted, reset, cleaned, changed startup settings, and spent a lot of time in doing and re-doing all these tasks, but the unit still like at the beginning.
My question for you: do you think is it hardware problem, or can be fixed with a firmware update?
Do you have any suggestion, setting or trick in order to solve the problem?
Thank you in advance for your help.
Kind regards
It looks like a hardware problem indeed. The touchscreen 'digitizer' is apart from the display in the front. You could try if the ribbon cable inside the radio is firmly connected to the mainboard i guess. Otherwise i think a new screen..?
I will have the same issue with this same units. I write to selller , he send me a new spare part responsible for displaying the image.
I have the same problem. What is the spare part that solve this probem? Thank you in advance.
Regards,
I tell you what happened, about two years ago I bought this unit and everything worked fine, in fact, quite satisfied with the cost / performance ratio, unhappy with certain details that I have read in other threads for not being able to connect my ELM 327 to the radio bluetoh, annoying noise of the internal processes of the radio, among others.
Three days ago, my wife connected a damaged cable to the usb port of the radio to charge her phone, at that moment the radio went blank, as in short, when I realized I disconnected the cable, the radio restarted and everything seemed to be Well, when I got home and turned off the car, the radio as usual also turned off, but with the difference that the LEDs on the buttons were still on and the annoying noise from the internal processes of the radio was heard (it was not turned off totally). Another problem is that the physical buttons were deactivated when turning on the radio again, for them to work I have to reset the radio, but when turning off the swich and turning it on again the buttons are deactivated again.
To rule out that it was a software problem, I tried to do a factory reset, I installed several updates that I found in this forum and in a Russian one, in principle the updates complicated my radio more, leaving the mirror mode, etc. I insisted and got a proper firmware and it was her again, but with the same problem I had been telling them.
I decided to open the radio and found this:
It consists of two board, one where the tablet is concentrated and another where the amplifier, outputs, etc.
As for the amplifiers and the output, etc. I saw that there is a big stain, at first glance it seems that it was the filter that spilled, in my opinion (I don't know much about electronics) it looks like Flux or a glue that was left at the time of its assembly.
On the tablet board there is another smaller spot, it seems burned, but it is the same substance as the other board.
My questions,
Will the problem be physical, the filter exploded? (does not look bloated or anything)
It will be software, should I reinstall the software through the computer and not through a ZIP file update?
What part of the engineering menu could modify the parameters to try to solve?
I await your diagnoses and possible solutions, thank you very much.
Sorry if reading this thread is confusing, but I use a translator, English is not my language.
Device is a PX5 fitted for an MB SLK (with extra hardware Buttons, CAN-BUS, etc), Android 9.
I think someone posted something similar before, I'm also in contact with the producer (Witson):
First the tl;dr - Touchscreen didnt work temporarily, then permanently, now not in some areas.
Now the details:
~2 Weeks ago: Touchscreen suddenly didn't respond, I rebooted the device, worked fine again
~1 Week ago: Touchscreen was acting "on its own" sometimes making presses I didnt make, so songs switched etc. maybe was also only dirt, but didn't seem like it, only reboot helped
~2 days ago: Drive to supermarket, everything works fine, come back, screen doesn't react anymore. AT ALL. Tried to reboot, still doesn't work. Tried to boot into recovery, even there the screen doesn't work(tapping gestures, long press).
So I wrote Witson and simultaneously googled for issues like that with Android Head Units, read sth about calibrating the screen or holding reset+power button... last thing didnt work.
Smarta** that I am, I connected a mouse to the device, system was working fine with that, so I could still somehow use everything, so definatley sth with the touchpanel
Then came the answer from Witson, they sent a video on how the recalibrate, so I did:
Go into Factory Settings > Enter 126 > Touch Panel Calibration (or sth like that) .... 2 crosses in the corners of the screen, no reaction .. i think i also tried to use "Reset Touch" but also didn't work.. BUT I didn't reboot afterwards.
Now the fun begins: After work, go to the car, Head Unit starts, I dont even try touching until after 3 minutes and as I try suddenly the screen reacts! But after some time of driving, it stopped working again.
Back home, reboot, touch works for ~1min then stops again.
Boot into recovery, Wipe/Factory reset, Screen reacts PARTLY after that, like around the middle it doesn't seem to react... Factory Settings for Calibration again, want to enter the 126, but that row on the keyboard doesn't react. All the others do (even though sometimes laggy), Mouse again, enter code, go to calibration, touch works this time! Calibrate, apply, reboot. But still sometimes the Settings itself don't react all the time, when I wnat to enter WiFi Password, again, upper row of the keyboard doesn't react, rest of the keyboard does.
WHAT is going on!? Faulty Hardware? Software? "Driver"?
I also have a video of me trying to enter stuff on the keyboard, if someone needs it.
Suggest to send it back or demand warranty replacement for these poor lack of Quality Control knock off head units.
All you will get posting here are guesses.