Hi all. This forum came up in a search and wondering if anyone can help. I have an Xtrons PB7839BP head unit example for specs - ( https://www.aliexpress.com/item/32849856346.html ) where the on/off button wasn't working, but the volume on the same button did work. I tried to mess around doing an panel button reset and the unit started to reboot but didn't come back on.
Nothing happens on switching on the car, no button lights or nothing. The unit does come alive when selecting reverse and the reverse camera starts, all the buttons light up but am unable to do anything.
I've tried pressing the RST button in both its dead mode and where there is power with the reverse camera on. I was unsure how long to do this and tried several time with longer intervals. Where the unit is dead and doing this, the lights only blink on releasing the button, but nothing happens. When doing it with the camera and power seemingly on, it immediately closes the camera and all the button lights go out, with still nothing happening.
Not that great with these things, so if anyone has any suggestions, I'd be grateful if they explained it very simply !
Thanks
Related
I have a Fuze that wants to shutdown all the time. I usually run EnergyRom on it and the slide to shutdown screen keeps popping up. When I run a stock rom on it, it also shuts down, as if someones holding the power button.
has anyone ran into this issue or have any idea how to fix it? I've searched for a while and can't find anything.
thanks!
Opening up the phone enough to get to the point that you can remove the power button itself and clean that area of the phone should fix the problem.
This even helped me on my previous phone where I thought the button was losing sensitivity. After reassembly the button worked beautifully again.
I had the same problem...and then all of a sudden my power button stopped working altogether...its weird because it works fine to turn the phone on, but once it boots it doesnt turn off the screen or bring up the shut down menu or anything
how did you manage to remove it to clean it out?
Hey Guys,
sadly my Nexus 5 suddenly turned off and wont turn on again. When not connected to the charger it does not react to any button combinations. When connected it loops the google screen (the first one you see on boot, that shows whether phone is unlocked or not), but reacts to button combos, but still reboots into the loop immediately. The phone is charged and runs the latest cm13 snapshot.
Hope you guys can help!
Thanks and greetings from germany
Could be a power button problem.
Try gently tapping the power button against the edge of table to see if you can "unstick" it. If that doesn't work, open the phone and clean around the button.
Final solution may be to replace the power button.
Hi All,
New guy to the forum, but have been led here multiple times looking for answers. Typically I find them but I'm stuck on this one.
I have an AVIN 5.1.1 9" Navigation Headunit and I am stuck [during/after?] bootup with a screen that says
"Android is Starting"
"Optimizing App 1 of 1"
I've googled for a solution and it says I need to wipe the cache by booting into recovery, which leads me to a new problem--I don't know the combination to get into recovery. I've contacted AVIN, and they have responded, but with just solutions from this forum already--and not directly to the particular headunit.
I can't post pictures or links yet since I'm a new member but it looks like the 6.0 unit of the first hit when you google "e46 9 inch avin"
It has ONE hard button (RST) in the lower left above the MIC. If you press the RST button, the softbuttons light up. If you hold the RST button (even for a minute long) nothing happens until you let go of the RST button. It appears that pressing the RST button removes power from the unit and power is not returned until the RST button is depressed. During boot up, I can press the power button, but it appears that it just shuts off the LCD. I've tried holding the power button down, but nothing also happens.
I'm at a loss and so I'm trusting that the experts on this forum can help.
**SOLUTION FOUND**
using an external usb keyboard, I connected to one of the USB ports.
During boot up, I repeatedly pressed "alt+print screen+e" (no quotes).
It eventually got to recovery boot but there was no way for me to move/select options
I repeatedly pressed "alt+print screen+e" (no quotes) again
keyboard arrows and "enter" works
I know it sounds hokey so I'm not really sure on the details of how everything worked out so if anyone has insight, I would appreciate it.
Thanks!
The SOM says "HCT-SOFIA-3GR-(DDR3)REV2.0"
Hi guys,
TLDR; Phone won't turn on, notification light flashes red once on power up (sometimes), black screen all the time. :crying:
So my brother has asked me to try and fix his Nexus 5 as he isn't tech savvy at all.
So the problem he is having started when he tried powering the phone on and it started to boot up and then started resetting iteself.
It now will not power on at all and doesn't seem to be on at all.
When holding the power button, it will sometimes flash the notification light (at the bottom) red for a second or two. No other response from the phone.
I've tried holding the power button for up to 5 minutes with nothing. I've tried holding the V+ key with the power button for a few seconds up to a few minutes then tried pressing the buttons expected to get to a reset menu with no indication of anything.
I'm kind of lost and was wondering if anyone has had these issues before and know what is the best issue to try and repair?
Thanks
It could be a faulty power button which is a common issue with the Nexus 5.
Remove the logic board, clean around the power button with isopropyl alcohol, dry it, quickly press and release the power button using more pressure than normal, re-install, and try to boot.
You could also try this: hold volume + button and connect the phone to a computer using a USB cable.
Thanks audit13, I'll give it a shot and shout back if it works
Hello,
last evening my s10e had an issue at the power button/fingerprint scanner, it doesnt work anymore! for me now it's impossible to power on the phone, i feel a classical click when i push the button, but the phone doesn't start, is there a way to power on it without this button?
i've tried to connect the phone and force the start with adb, but it remais off.
Help me please, i am in greece for holidays and i can't go in a samsung point
Are you tries restarting phone with button combo?
Using a particular combination of buttons, you can force your Galaxy S10, S10 plus, and the S10e to restart the system. Here’s how to do this.
Press and hold the Power button and the Volume Down button simultaneously until the device screen turns off.
May need to press and hold for more than 7 seconds
It will shut down and restart automatically
If the device screen stays black and you’re unable to see if it has turned off, keep holding down the Power and Volume Down buttons until you feel a vibration.
NEW
5ta1da said:
Are you tries restarting phone with button combo?
Using a particular combination of buttons, you can force your Galaxy S10, S10 plus, and the S10e to restart the system. Here’s how to do this.
Press and hold the Power button and the Volume Down button simultaneously until the device screen turns off.
May need to press and hold for more than 7 seconds
It will shut down and restart automatically
If the device screen stays black and you’re unable to see if it has turned off, keep holding down the Power and Volume Down buttons until you feel a vibration.
Click to expand...
Click to collapse
Thank you for your answer! Unfortunately i tried to force restart with this combination but nothing has happened... it's very weird, tomorrow i will return at home and i will go in a samsung point for the check up. I will write update as soon as i will understand what happened :/
After few days the assistance told me that the cause of the problem was water (wasnt it waterproof?) so i have to change power and volume buttons. Very disappointed
Must still be at the store
same thing
I was looking for some infor. My powerbutton stopped working. The fingerprint sensor works but not the power button. I wanted to take a few shots underwater. Maybe just 10 inches underwater and this happend. Looks like its not so waterproofed. I got lucky that the device was on. It looks like if it get off there is no way to turn it on.