Finally ran into the constant bootlooping which occurs when the power button is being depressed continuously (defective/sticky power button).
I have found a work around to keep my phone running by removing the plastic power button (not the soldered power switch); my phone stays running and I can use it normally sans a power button.
My question is: how do I know if my power switch is defective/sticky rather than my plastic power button was screwed up and pressing on the power switch in an awkward way (I have dropped my phone a couple times recently).
If it's a defective/sticky power button, I want to get it repaired with mobiletechvideos but I don't want to commit to said path until I know without a doubt I have an issue.
mcho19 said:
how do I know if my power switch is defective/sticky rather than my plastic power button was screwed up and pressing on the power switch in an awkward way
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This is almost certainly caused by a bad/stuck power (on/off) switch. It's a very common problem on all the US-carrier Galaxy SII phones. (I think the international "i9100" model uses a different type of switch.)
You can check the switch by gently touching the physical switch (plastic cover/"button" removed) with a toothpick/pen/etc. As a "snap-action" switch, it shouldn't activate until you hear/feel it "snap" closed. If it's activating with a light/slight/tiny touch, the switch is bad. On my Sprint GS2, even the slightest brush against the power button caused it to wake the phone. Sometimes it would stick "on", and then the phone would reboot. I bought a new switch, soldered it in, and have no problems since.
If you don't have insurance coverage and are out of warranty, you can replace the switch yourself. Several eBay sellers offer replacement power switches for the SGH-T989 Galaxy S2. (about ten bucks)
Or, if you don't have mad soldering skills, a few companies offer mail-in repair service:
- $39: http://www.ebay.com/itm/Power-Switch-REPAIR-SERVICE-T-Mobile-Galaxy-S2-SGH-T989-Samsung-Fix-Bad-Button-/161028469601
- $45: http://www.ebay.com/itm/Power-Button-Repair-Samsung-Galaxy-S-Galaxy-S-II-Galaxy-NOTE-MORE-/320910836052
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Hello everybody,
I have an HTC Desire that has a problem with the volume buttons. The buttons were working until I dropped it on the floor. The phone had a silicone case and screen protector so it seemed fine until I tried to adjust the volume but it wouldn't work both up and down. I verified the problem by trying to go into the bootloader using vol-down + power but it wouldn't work.
I noticed that before I dropped the phone the volume button was rather fidgety meaning that I could use my thumb to move the button sideways and make it pop out a little bit but despite all that the button worked and I was able to flash LeeDroid on it.
After I dropped it, the button seemed to stabilized. I could no longer pop it out or move it side to side it seemed like the button popped back in and was secure but the function didn't work. I can still hear the click but nothing happened.
So thinking that something was just loose, I decided to void my warranty (if I had one) and disassemble my Desire in order to fix it.
Once I got in I discovered that the volume button was not as simple as it seemed. It appears the "clicker" (the rubber circle piece that makes the click sound) and the actual circuit board that controls the volume is held together on a metal plate with black tape. This means the purple plastic piece has nothing to do with the functionality of the volume key it just pushes the clicker taped to the circuit board.
So I'm confused and stuck on how to fix this. I checked the black ribbon and it seemed to be fine, no tears or anything. I'm wondering how a drop could affect the volume button considering everything is held together with tape including the volume control circuit board and the ribbon that connects it.
Does anyone have any idea how to fix this or anyone know what the volume circuit board looks like without the black tape? I'd like to fix the volume button so I can flash Gingerbread on it.
Follow this thread, it might help you
http://forum.xda-developers.com/showthread.php?t=2146201
So after finally fixing all the other issues i had with my phone (broken screen, broken vibrate motor, broken speaker) i was finally at ease. It lasted for about a week with everything functioning until now the phone gods have again struck me down. This time i have what is referred to as a Power Cycle. Kind of like a boot-loop except the phone completely boots up into my homescreen then the power options menu pops up, and no matter if i click back or not, that **** is going to reboot on me. Its to a point where if i pop in the battery the phone auto boots. Here's the kicker though. If i take off the back case and just set it on the battery with an open back, it doesnt power cycle. But the power button on the case itself is not stuck as you may be thinking as i can depress it and the cover spring pushes it back. I've hard reset, even went back to complete stock (no root) and it still does it. the power button works (very sensitive) if you have no case on the back, but if that thing is on, it acts like the button is being pressed.
Any Ideas?
Sounds like the power button is stuck... Try taking the phone apart and cleaning the contacts. Then press the power button a few times to ensure it works like it is supposed to. Put everything back together, tighten the screws but don't torque them. Should not turn on after you put the battery back in, wait a few to make sure it doesn't. Then power it on and see how it goes.
Sent from my Slim E4GT using xda premium
still didnt work. i used some rubbing alcohol and a lint free cloth on it. the interesting thing is, when you take the case off, if you set your finger over where the button is (making no contact) it still registers that you are touching it. this is what i think is causing it to power cycle when the phone case is on, as it believes that it is being pressed when it isnt.
th3 game said:
the power button works (very sensitive) if you have no case on the back, but if that thing is on, it acts like the button is being pressed.
Any Ideas?
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Click to collapse
I had almost the exact same problem with my Epic Touch. Ended up being a bad power switch. How handy are you with a soldering iron? If you're pretty good, you can buy the switch for ~$10 and replace it yourself. (You can also try cleaning it - several tutorials here, and the "Captivate" phone seems to have the same switch and issues. Search both forums)
Several eBay sellers sell the switch you'll need.
So my power button is acting up, and I think it's a hardware failure.
If the screen is on and I press the power button, the screen turns off, then back on, as if multiple key presses are being registered. If the screen is off and I press the power button, sometimes the long press power menu comes up.
I think the ribbon cable associated with the power button is failing, what do you guys think?
EDIT: just found out the power button is surface mounted to the mother board :-/ so that's a bummer if the power button is the issue.
Smith
First, and only, bump. Does anyone have any advice? I've ordered the blue plastic power button itself, but not the actual switch (I don't know how to surface mount).
I'm going to replace that. If that doesn't work, I'm not sure what else to do. Can I reflow the power switch on the motherboard somehow?
Thanks
Smith
smithisize said:
First, and only, bump. Does anyone have any advice? I've ordered the blue plastic power button itself, but not the actual switch (I don't know how to surface mount).
I'm going to replace that. If that doesn't work, I'm not sure what else to do. Can I reflow the power switch on the motherboard somehow?
Thanks
Smith
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Click to collapse
You can get a replacement part on ebay, but it is a piece that needs to be soldered to the board. You should call local cell repair shops and see if they have the expertise to do this.
I've had this issue for the last 3 months. I've just been using the home button as power on and quick toggle screen off.
Sent from my Galaxy S3 on CM10.1 using XDA App
BCSC said:
You can get a replacement part on ebay, but it is a piece that needs to be soldered to the board. You should call local cell repair shops and see if they have the expertise to do this.
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Yeah. I'll see if this button replacement works first, then I'll look into having the actual switch replaced. I'm good at soldering, but I've never surface mounted, and I don't think my phone is a good place to experiment ha. I'll start looking into repair shops.
blackdragon12 said:
I've had this issue for the last 3 months. I've just been using the home button as power on and quick toggle screen off.
Sent from my Galaxy S3 on CM10.1 using XDA App
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You use your home button as the power on and off? What do you use as the home button then?
The home button.
I never said I used the home button as power off, I use a quick toggles screen off setting for that
smithisize said:
Yeah. I'll see if this button replacement works first, then I'll look into having the actual switch replaced. I'm good at soldering, but I've never surface mounted, and I don't think my phone is a good place to experiment ha. I'll start looking into repair shops.
You use your home button as the power on and off? What do you use as the home button then?
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Did the plastic button change fix your problem? I think I am having a power button problem as well just not sure.
I dropped my S3 while on the treadmill and now the power button is really sensitive, it gets pressed just from holding it or brushing up against the side. I probably going to send it in because its been less than a year so its still under manufactures warranty.
In the mean time, I know I've used ROMs that have on screen buttons in options, I could use one of those, then would it be possible to map the physical home button to be the power button?
mcj108 said:
I dropped my S3 while on the treadmill and now the power button is really sensitive, it gets pressed just from holding it or brushing up against the side. I probably going to send it in because its been less than a year so its still under manufactures warranty.
In the mean time, I know I've used ROMs that have on screen buttons in options, I could use one of those, then would it be possible to map the physical home button to be the power button?
Click to expand...
Click to collapse
Googling "remap i747" be faster ...
I ended up just installing Illusion, amazing AOSP rom by the way, and it let me enable software buttons and disable the hardware ones. It worked great until I could get a replacement phone.
I had a weird thing happen. Earlier today I dropped my phone from approximately 18 inches onto a laminate surface. The phone was in a protective case. After I picked it up, the power button wouldn't work. The rest of the phone was fine. No scrathes on the case, no other types of hardware failure or signs of damage. I opened the phone up, removed the motherboard and inspected the entire system. Everything seemed perfect. I inspected the power button and there didn't seem to be an issue. I put everything back together, while paying close attention to make sure that all connections were secure. After reassembly there was still no change. So I have a couple of questions:
1. Can I jump the connection between the two power button connections (which I believe is how the power button itself normally activates the phone) to see if that's where the problem is so that I can establish if the power button is in fact the problem? Or will that short something out on the motherboard?
2. Has anyone had anything like this happen, or know of a place where the power button can be bought, etc... Any suggestons are appreciated! =)
Thanks!
Edit: I was able to find the connections to the power button flex cable. The two terminals were loose and I was able to pull them out a bit using a wooden tooth pick. I now have good contact and the power button is working perfectly. I recorded what I did and will post a video on YouTube in case someone ever has this happen to them. I don't know why an 18 inch fall would cause this type of issue, but oh well. Fixed is fixed.