Database Develop

Want to FLash but powerbutton don't work

Hello Everyone,
I have a BA and I want to flash it but the power button dose not work..opened it up and found that the mechanism under the button has dropped and hanging on by a thread. The device works but I need the power button to get into bootloader mode.
So the question is this: is there a way to get into bootloader without using the powerbutton?

yolandanelson31 said:
Hello Everyone,
I have a BA and I want to flash it but the power button dose not work..opened it up and found that the mechanism under the button has dropped and hanging on by a thread. The device works but I need the power button to get into bootloader mode.
So the question is this: is there a way to get into bootloader without using the powerbutton?
Click to expand...
Click to collapse
From Jadel....
First, some advice. Several people have asked this question and it has been responded to in other threads. On forums, ALWAYS try and use the search function before asking. It might save you some time, and it also may give you further ideas or solutions to the problem. Now on to the response I gave someone else last year. Read the whole post.
IT IS POSSIBLE!
BUT DO THIS AT YOUR OWN RISK!!! I'M NOT RESPONSIBLE FOR ANY DAMAGED OR FRIED PDAs
I know because I myself have done it on an I-mate (Himalaya). It took some trial and error but I am now running WM6. In my case though, I had to completely remove the power button from the device. The previous owner dropped it on its head, and I got it for free, unfortunately most of the top is missing, including the power button.
SO, on to how I did it. I took a paper clip (metal) and put it about 1cm down, slightly to the right of where the power button used to connect to the motherboard. Make sure you have turned your XDA/IMATE on before doing this. You'll find that when you find the right area, your device will turn off, or the screen will go dark (like holding the power button for a second or giving it a quick tap).
If you manage to hold it there for the right period of time, while pressing the other bootloader buttons, then you will be able to enter bootloader.
This took me close to an hour to get just right, on both occasions I have done it, but it eventually worked.
Note: I have no idea how exactly this worked, but it did. My IMATE was useless without me updating the rom, so I had no worry about frying it if I did something wrong, that is why I was OK with playing around with its insides. BEWARE that you MAY DO DAMAGE to the device.
Good luck.

If you have no clue just don't post!!
First off I have searched here and the internet as a whole and your suggestion didn't work! I have taken apart and modified to add a camera to my working BA ( yeah I got 3 of them) so "..playing around with its insides. BEWARE that you MAY DO DAMAGE to the device.." is no worry of mine. Second off, if you had taken notice I have been on this board since Feb 2007 and I have only had to ask 3 questions, which means my searching skills might just be working on some level.
Maybe I should have been more specific: is there a software boot loader for the sx66?
David389 said:
From Jadel....
First, some advice. Several people have asked this question and it has been responded to in other threads. On forums, ALWAYS try and use the search function before asking. It might save you some time, and it also may give you further ideas or solutions to the problem. Now on to the response I gave someone else last year. Read the whole post.
IT IS POSSIBLE!
BUT DO THIS AT YOUR OWN RISK!!! I'M NOT RESPONSIBLE FOR ANY DAMAGED OR FRIED PDAs
I know because I myself have done it on an I-mate (Himalaya). It took some trial and error but I am now running WM6. In my case though, I had to completely remove the power button from the device. The previous owner dropped it on its head, and I got it for free, unfortunately most of the top is missing, including the power button.
SO, on to how I did it. I took a paper clip (metal) and put it about 1cm down, slightly to the right of where the power button used to connect to the motherboard. Make sure you have turned your XDA/IMATE on before doing this. You'll find that when you find the right area, your device will turn off, or the screen will go dark (like holding the power button for a second or giving it a quick tap).
If you manage to hold it there for the right period of time, while pressing the other bootloader buttons, then you will be able to enter bootloader.
This took me close to an hour to get just right, on both occasions I have done it, but it eventually worked.
Note: I have no idea how exactly this worked, but it did. My IMATE was useless without me updating the rom, so I had no worry about frying it if I did something wrong, that is why I was OK with playing around with its insides. BEWARE that you MAY DO DAMAGE to the device.
Good luck.
Click to expand...
Click to collapse

I lifted this directly form another site I have subscribed to
http://relaysgoldens.com/sx66/tools/ROM_Update_Tools.rar

HUGE problem ! HELP ! ( phone wakes on it's own ) (i uploaded a clip so ypu can see)

my TyTN II can't co to sleep - when I press the POWER button it goes to sleep and after 3 seconds it wakes again
PLEASE HELP ME
P.S. and it can not do a HARD RESET with the buttons
_______________________________________________________________________________________
here is a clip that I shot with my camera so you can see what is the problem
RAPIDSHARE - http://rapidshare.com/files/145255212/SL550774.MP4.html
GOOGLE VIDEO - http://video.google.com/videoplay?docid=2057235928163515395&hl=en
_______________________________________________________________________________________

Looks like a software or a regedit is keeping it from doing so. Try resetting the device and see what happens.

kareem9nba said:
Looks like a software or a regedit is keeping it from doing so. Try resetting the device and see what happens.
Click to expand...
Click to collapse
I did a soft reset - nothing
I did a HARD RESET- nothing
I changed the rom - nothing , it still wakes up

This has nothing to do with ROM Dev. Moved to General

I don't have a clue what it is

Ok i have had this problem before. But it is when i put the phone in universal car cradle. It hits the camera button half way so when i put it to sleep, it wakes back up after about 3 seconds. Make sure none of the buttons are partially stuck.
Frank

yes , now it has no autofocus

fordmav said:
Ok i have had this problem before. But it is when i put the phone in universal car cradle. It hits the camera button half way so when i put it to sleep, it wakes back up after about 3 seconds. Make sure none of the buttons are partially stuck.
Frank
Click to expand...
Click to collapse
and how did you fix it ???

do I have to open the phone or there is a softwere way to fix it ?

here is a clip that I shot with my camera so you can see what is the problem
RAPIDSHARE - http://rapidshare.com/files/145255212/SL550774.MP4.html
YOUTUBE - I'm uploading it there now , i will give you the link asap

UPDATE !!!!!

are you running igo8 in the background? Turning the phone off while running an *ahem* type of Igo8 may cause certain on/off issues...

I'm not running anything

Sorry bout the late reply. I work during the day so i didnt see this till now.
What i would suggest is turn on the camera and goto the settings. Make sure it asks for full press. Then attempt to take a picture, by half pressing the camera button, as this will make it auto focus. If the little broken square in middle of screen doesnt show, then it has something to do with your problem.
My problem wasnt an actual problem but rather an observation that i thought could help.
Ive just done a couple tests on my phone and the camera button is the only thing that causes this issue. I hold it half way as to not activate the camera and then turn the phone off to sleep, but after precisely 3 seconds, it wakes back up
Hope this helps you find it. As for solving it, i don't know. Possibly a few harder presses of the camera button???? Please, though, dont take what i am saying as Gospel as it may be something totally unrelated
Frank

i tried the thing with the setting for the full and half press and nothing , it was the same - the camera shoots ONLY WITH A FULL PRESS !
The good news is I took it for a repair

Hope u get it back soon with minimal repairs needed
Frank

more bad news - it turnd out that the camera button is realy stuck on auto focus but the realy bad thing is I CAN'T FIND A SPEAR CAMERA BUTTON
help me pleaseeee !!!!

I have this exact problem...press power button--3 seconds later phone back on again. Have flashed 6 different ROM's and it has not removed this issue. It is not any of my software because this remains before I add any of my software after a flash.....as per OP i am unable to do a hard reset.
I have done many searches on the forums and continually come up with the 10 second backlight fix....this is not the same issue.
If some of the senior members could please help I would greatly appreciate it.
Currently running a kaiser w/ L26 light...Hard SPL 3.29

griffin911 said:
I have this exact problem...press power button--3 seconds later phone back on again. Have flashed 6 different ROM's and it has not removed this issue. It is not any of my software because this remains before I add any of my software after a flash.....as per OP i am unable to do a hard reset.
I have done many searches on the forums and continually come up with the 10 second backlight fix....this is not the same issue.
If some of the senior members could please help I would greatly appreciate it.
Currently running a kaiser w/ L26 light...Hard SPL 3.29
Click to expand...
Click to collapse
At the moment my biggest problem is that i cant' find nother camera button for the motherboard

shtepsel said:
At the moment my biggest problem is that i cant' find nother camera button for the motherboard
Click to expand...
Click to collapse
It's not listed on their site, but it might be worth contacting these people.

Power button not working right on HTC Diamond

Hi, I cleaned the screen of my HTC Diamond with a bit of alcohol and a pice of tissue and it seems that the alcohol got inside of the Power button. Now, every time I try to turn the screen on by touching the power button, it turns the screen on but it dispays a message that says: "Warning: Power will be turned off and you may lose data if you have not saved them. Do you want to continue?"
If I click YES, it reboots the phone, If I click NO, then its ok. That is fine, but the problem is when I want to turn the phone off. It's impossible. It will keep trying to reboot.
Does anybody know what can I do? I am really worried.
One solution could be to make some other button from the phone to act as the power button (like the Home button that is rarely used). How can I do that?
Please help!!!!
Thank you

Hi,
I have the same problem.
Did you already find an answer ?

No, I didnt find the solution. I tried to fix the hardware but didnt succeed. So, I created a dummy file to emulate the poweroffwarning.exe that pops up when you long press the power button.

Solution
Hello, I have one AT&T TITL 8925 that upgraded to Windows Mobile 6.5
After the new software was loaded I saw same behavior on my phone.
When the phone is ON and I pressed the power button sometimes it do not respond, and others I received the warning message "power will be turned off and you may lose data if you have not saved them..." My first tought was that it is because the processor is slow to this new software release, or maybe my phone is damaged. I was working perfectly with previous (light version) release so my final guess is that this sw requires more uses of the processos.
Anyways what I have been doing is before turing it off I press the red button or hang up button, and after this if I press the power button it works fine (No more warnings). I have some theories but I will keep doing the same
Hope this partial solution helps you as it does for me.
Regards
Jerry

this is not working for me :| the problem is i can't use my power button not even to open my display when it goes to sleep :|:| i don't know what to do guys please help me

You can use the Stylus to awake the phone, instead of using the power button. You can also use TouchLockPro, to suspend the device, so you do not need the power button for that too.
Also you can set the phone to awake on pressing any key (Windows Mobile Setting), but be sure to have a good locking tool, which makes sure you do not have bogus calls and it goes to sleep again fast enough, otherwise it will drain battery.

I have the same problem.
Anyone solved this one?

I have the same issue and this is not a hardware problem. Strange since even updates/changes of the rom do not correct the issue. Did anybody find a solution for this...?

Well.. ive had this problem just ones.. I was walking downtown with my diamond in the frontpocket of my jeans (face down), after about 3min. of walk, it started to rain (big drops), and my clothes got completely wet, i turned around emidietly, to walk back to home. When i got home after 3 more min. i layed the phone on the table, and then i could hear there were somethibg wrong.. The "turn off" sound came, and the notification kept on coming up, even though i pressed No, as if i were just holding the power button down.. Then i began to press the power button continuesly for about a 100 times, and to my surprise then it stopped and have functioned perfectly for about 2 month now.. Something tells me theres some serius promlem with the smallest kind of moisture near the power button on this phone..

Yes this is hardware related.
If you take a look at the inside of the powerbutton, there are 2 points making contact when you press the button.
If you press it, the software will recognize this and the screen will turn off.
If you press it long enough you'll get the "Do you want to turn off your device" message.
But, if water gets underneath the button, the 2 points may be making contact, because water/alcohol conducts.
In this way you'll get that message.
The button is very weak. Due to this, it may not properly work if you have used it for a long time.
I think that could also be a reason why you constantly get that message.

[ElCondor] said:
Yes this is hardware related.
If you take a look at the inside of the powerbutton, there are 2 points making contact when you press the button.
If you press it, the software will recognize this and the screen will turn off.
If you press it long enough you'll get the "Do you want to turn off your device" message.
But, if water gets underneath the button, the 2 points may be making contact, because water/alcohol conducts.
In this way you'll get that message.
The button is very weak. Due to this, it may not properly work if you have used it for a long time.
I think that could also be a reason why you constantly get that message.
Click to expand...
Click to collapse
Hi! on one of my diamond, the power button off from the board. So the black little board with the button itself is not part of the complete circuit anymore... if someone know the hw testpoint for that it would great please.... i see a few TP around, but if i just start sorting them i just going to kill it...I use to flash phones with TP so is not new for me , but i find nothing for diamond.

I have a similar issue. Mine seems like it is almost stuck on, so it wakes its self up all the time, meaning a full charge lasts an hour or two. Then when it runs out of battery it tries to switch itself back on, so goes through a continuous cycle of vibrating and beeping until the battery is removed. The gf finds it very annoying at 3am lol.
Don't recall mine getting wet, but it's possible it could have got damp at some point, but it's been doing this now for about 3 weeks.
Tried a hard reset with no luck.

[ElCondor] said:
Yes this is hardware related.
If you take a look at the inside of the powerbutton, there are 2 points making contact when you press the button.
If you press it, the software will recognize this and the screen will turn off.
If you press it long enough you'll get the "Do you want to turn off your device" message.
But, if water gets underneath the button, the 2 points may be making contact, because water/alcohol conducts.
In this way you'll get that message.
The button is very weak. Due to this, it may not properly work if you have used it for a long time.
I think that could also be a reason why you constantly get that message.
Click to expand...
Click to collapse
I can see that how to remove the power button from the video showing how to replace the screen. Any idea if once removed the button can be fixed, if not can you get replacements?

2004mark said:
I can see that how to remove the power button from the video showing how to replace the screen. Any idea if once removed the button can be fixed, if not can you get replacements?
Click to expand...
Click to collapse
I think I should send it to HTC, and ask them to do it. Or go to a repair centre. But I should not try it myself, because it can be dangerous for the diamond.
Also try searching on ebay, there might be the parts you could use.
Good luck!

is there a way to remap the power button?

my diamond face same problem since this afternoon, arrrrgghhhh!!!
- blocking hwbutton1, hwbutton2, hwbutton3, hwbutton4, hwbutton5, hwbutton6, hwbutton7 >>>> NO LUCK
- hard reset >>> NO LUCK
guys, any of you solved the problem yet

youtube.com/watch?v=Q4SEQ6AUFOI

My Sony X1 have some strange problems with the power button. When it goes into sleep mode, I can not wake it up with the power button, all I can do is to soft reset. Sometimes it does not go into sleep mode either , it just "wake up" all the time. I don't know what's wrong with it, tried Hard reset but no use .
ANyone had this problems before?

@
The only way to solve this is to leave the phone near your laptop heat vent ( fan) . hot air from it might help you to get the power button up and running. But if that to doesn't work then i'm afraid thats bad.
Current sol :
1. download SU2U ( search threads )
2. go to the settings and make the " lock when stylus inserted" option ON
3. Change the screen turn off time to 5 secs..
So , to unlock , remove stylus , to lock -> insert it back ( its turns off the back light within 5 sec )
Less annoying

elektros said:
youtube.com/watch?v=Q4SEQ6AUFOI
Click to expand...
Click to collapse
thanks for this link, i accidentally tear off my power button flex. now i could turn it on again. Thanks elektros

Galaxy Tab 7 Won't Turn On? Here's a Fix it!

I've tried all of the other fix its to get my Galaxy Tab to work. I've tried charging for 12 hrs via wall charger (no response)... I've tried holding the power button plus home key while tapping on the screen at the same time for over 2 minutes (no response) ... I've even tried putting it into download or recovery mode by holding the power button plus the volume key (up or down) for over 2 or minutes (no response) ...
If you're like me and thought the manufacturer was your only option left, there is one thing left you can try.
All I did was remove the shell and unplugged the battery for 30 mins, plugged it back up and viola!!! I have the battery charging icon. And it now boots perfectly into the OS.
Its worth a shot.... here's a video I watched to learn how to remove the shell.
http://www.youtube.com/watch?v=QeRaQR7RU0I
Step by step at ifixit.com
http://www.ifixit.com/Teardown/Samsung-Galaxy-Tab-Teardown/4103/1
Note: you will need a tri-wing screw driver to remove the first two screws. I didn't have one and just used a precision flat head screw driver and it worked like a charm if using enough down force so you won't strip the screw.
Hope this helps someone...

Battery removal resets almost everything -- I'm grateful for your confirmation that it works on the Tab, and also for your links to the hammerless teardown.

noguru said:
Battery removal resets almost everything -- I'm grateful for your confirmation that it works on the Tab, and also for your links to the hammerless teardown.
Click to expand...
Click to collapse
XDA forums has helped me so much, so I'm glad to return the favor to those that need it!

good find
not had the problem myself, but that info is now in my brain for whenever I do have a problem

Good. Thx man!!!

Many thanks man, this saved my (tablets) life. Switched off my tablet last night after charging, for the first time in weeks, just to refresh everything. Tried switching back on this morning and nothing. I've spent all day trying to find out what the hell was wrong and tried all the various button solutions others have mentioned. Nothing worked. came across your info and links and thought I'd give it a try as I had nothing left to lose, tablet was dead. Voila!...back up and running again. I won't be switching it off again in a hurry. Once again great info and much appreciated.

Nice info, really helpfull, my friend gtab p1000 have some problem, wont turn on, and i found this thread, i just try once, and amazing its working, i hit thanks to you

My have turn off and dont turn on, i wiated 2 days and plugged in wall charger, and they work again.

dead tab
still got no luck...i'm tried of your skill yesterterday n my tab still won't turn on...

thanks for the advice
hai, i saw your posting and thank god it really helpful. i own a p1010 and some how it cant turn on twice!. what ever i do, and what ever tricks available in the internet i had tried it all, all with no success. so the first time around i had to sent it for repair and because my tab's warrant had already ended i had to fork out a lot just to make it running. the repair shop just stated that the battery and the touch screen need to be replace. how stupid of me to fall for that. after that my tab is usable again. then it happend again. two days later the same problem occurred. now i know it is not the hardware but the software that causeing all this headache.
now, with your posting, i opened my tab, disconnected the battery for 15 minutes and walla my tab is ok again. phew...save me a lot of money.
i see that the problem might be in the software. i see that alot of p1010 owners face the same problem here after upgrading from froyo to GB. and i notice that the blank screen syndrome would happen if we put it in a standby mode (my standby mode would be you touch the power button once just to make the screen goes blank).
just my 2cents.

amirrash said:
hai, i saw your posting and thank god it really helpful. i own a p1010 and some how it cant turn on twice!. what ever i do, and what ever tricks available in the internet i had tried it all, all with no success. so the first time around i had to sent it for repair and because my tab's warrant had already ended i had to fork out a lot just to make it running. the repair shop just stated that the battery and the touch screen need to be replace. how stupid of me to fall for that. after that my tab is usable again. then it happend again. two days later the same problem occurred. now i know it is not the hardware but the software that causeing all this headache.
now, with your posting, i opened my tab, disconnected the battery for 15 minutes and walla my tab is ok again. phew...save me a lot of money.
i see that the problem might be in the software. i see that alot of p1010 owners face the same problem here after upgrading from froyo to GB. and i notice that the blank screen syndrome would happen if we put it in a standby mode (my standby mode would be you touch the power button once just to make the screen goes blank).
just my 2cents.
Click to expand...
Click to collapse
Hi, I got same problem with you guys with my P6800. Tried all those methods (execpt those removing the casing/battery). I followed one tip and it works. Press and hold the power button for 20 second and release it. The screen displayed an image (icon?) of battery and clock. Some said it also work by pressing the button for 10 second.

thanks for the advice guys
holding the power button works
but my question is why is this happening?it wasnt happening before?

mayurh said:
thanks for the advice guys
holding the power button works
but my question is why is this happening?it wasnt happening before?
Click to expand...
Click to collapse
guys
does no one know whats causing this? is it a firmware issue? or battery?

for me, this happens every time I use the Netflix app. if I don't go into task manager and clear memory after every use of Netflix, my galaxy tab will not turn back on. sometimes fully charging it will wake up the screen, but that's not helping today so I guess I need to remove the shell even though I don't want to. I miss pocket PC's with soft reset buttons!!!

dargpat said:
I've tried all of the other fix its to get my Galaxy Tab to work. I've tried charging for 12 hrs via wall charger (no response)... I've tried holding the power button plus home key while tapping on the screen at the same time for over 2 minutes (no response) ... I've even tried putting it into download or recovery mode by holding the power button plus the volume key (up or down) for over 2 or minutes (no response) ...
If you're like me and thought the manufacturer was your only option left, there is one thing left you can try.
All I did was remove the shell and unplugged the battery for 30 mins, plugged it back up and viola!!! I have the battery charging icon. And it now boots perfectly into the OS.
Its worth a shot.... here's a video I watched to learn how to remove the shell.
http://www.youtube.com/watch?v=QeRaQR7RU0I
Step by step at ifixit.com
http://www.ifixit.com/Teardown/Samsung-Galaxy-Tab-Teardown/4103/1
Note: you will need a tri-wing screw driver to remove the first two screws. I didn't have one and just used a precision flat head screw driver and it worked like a charm if using enough down force so you won't strip the screw.
Hope this helps someone...
Click to expand...
Click to collapse
Hello guys, thanks for your support and excuse me for my english but i'm the same problem with my GT-P1000(i've seen it on the back of my tab !). I've let it charging several hours and try to connect it to Odin which doesn't recognize it ! I got always a black screen and the rear flash led flashing flashing and flashing when it's connected to charger or my PC or when i keep pushing the power button ! Before the brick state i've follow the bad tutorial to root my tab and i've flashed a firmware for galaxy tab 10.1 inch ! Can i try this method?

sephiroth225 said:
Hello guys, thanks for your support and excuse me for my english but i'm the same problem with my GT-P1000(i've seen it on the back of my tab !). I've let it charging several hours and try to connect it to Odin which doesn't recognize it ! I got always a black screen and the rear flash led flashing flashing and flashing when it's connected to charger or my PC or when i keep pushing the power button ! Before the brick state i've follow the bad tutorial to root my tab and i've flashed a firmware for galaxy tab 10.1 inch ! Can i try this method?
Click to expand...
Click to collapse
u flashed tab 10.1 rom into P1000? oh man..
i think it bricked already.. there's nothing left that u can do, flashing back via odin, removing battery or else.. unbrickble mod method is the only way..
Sent from my GT-P1000

same problem
Manuele83 said:
Good. Thx man!!!
Click to expand...
Click to collapse
i have a similar problem my grandson mess up the digitalaizer and i ordered a new one and installed my self. because the tablet been w/o charge for almost a week until i get the new parts and fixed now won't get on, i plug in to charge for 24 hours is showing the 100% battery but still won't start. i look around do different things w/o luck i press the power and the -volune key and nothing, after left ed charging again i unplug the battery for few hours and nothing. i really need help on this. tk's

[Q] phone will not power off or on properly. Shut down menu pops up constantly

I have searched this exact title and came up with 10 pages and I never saw anyone else with this problem. Surely I cannot be the only one.
After the Gingerbread upgrade I was getting the tethering message/force close, during that time my phone started to randomly shut off ( settle down Beavis, this isn't the same question thats been asked a thousand times ) and reboot. I lived with the tethering message problem for as long as I could but my phone became more ignorant day by day. I finally found a fix for the tethering issue and haven't had a return problem with that but now my phone either stays in standby mode ( dark screen ) and refuses to respond to the hard button to wake it up OR once on it refuses to go into standby mode and stays on until I pop the battery or I go into settings and time the screen out in 15 seconds ( often times this doesn't shut it down either ). Sometimes I can get it to come on by multiple pressing the power button ( this can't be healthy ) and the lock screen will flash momentarily just long enough for me to unlock the screen. Other times it will go to the lock screen while I'm in the middle of something.
Every day at some point while it's on and I'm using it, the power button option screen pops up ( silent mode, flight mode, power off ). When I'm done with a call I try to go into standby and it just sets there...ON.
The thought has crossed my mind that the button doesn't work or has a short but I really think it's something else ( I hope ). Can somebody help me? I am not very techie although I have updated the phone three times myself. It is unrooted and 2.3.5
Thank you in advance

I would go with the power button. It's a known issue on captivate.

mrhaley30705 said:
I would go with the power button. It's a known issue on captivate.
Click to expand...
Click to collapse
I stopped by the AT&T store the other day to check on insurance (ends up I didn't have it) and told them about my button not working properly and how the Captivate was notorious for this problem and they all said "We've never heard that". So the gadget gal is in there so she offers to take it apart and check it. She claims there isn't anything wrong with it and that it has the same amount of spring as the volume buttons. She then noticed that when she put the battery back in the phone came on automatically, I said it's not supposed to do that and she agreed but fortunate for me since I cannot turn it on. She then says I'm eligible for an upgrade and try's to sell me a new phone. I don't want a new contract.
So should I try and buy a new button and change it or could it be something else? Thank you in advance.

Are you using a case for your phone by any chance? If yes, is it too tight? Maybe the power button gets stuck because of that sometimes? Just a long shot! You stated that power menu pops up once in awhile when you're using it, is it possible that the way you grip the phone causes that? (Just trying to help and not trying to offend you btw.)
You might want to try flashing UCKK4 with bootloader(use it from the one click master collection of stock rom's) just to make sure that there is no issue with the firmware. It is not likely to fix your problem but it's good to have a clean start. At least that's what I would do to begin with.
Since you're willing to change the power button, why not do an experiment? Remove the power button and see if there is any change? If it works fine then it's the power button that's faulty else it's a hardware problem.