Random switch off, dunno what to do, please help. - G2 and Desire Z General

So, I have a desire z running mexdroid 3.
The other day I had left it on my take and water from a bottle nearby started leaking and by the time I noticed, my phone was sitting in a pool of water. I got it out as quick as I could wiped it down fully and switched it on(realize now how foolish that was), it was working perfect. But then it randomly kept switching off. I tried the rice thingy and also dried it. sometimes it just shuts off. I don't seem to be able to find something which triggers it. I just leave it resting for 15 minutes and it's off, sometimes I leave it for hours and it's working fine. Do you think I need to replace the battery?
On the inside the water damage indicators on the battery and the phone are pink.
Please help guys.
Sent from my HTC Vision using XDA

water damage ideas
I got salt water all over my HTC G2 while kayaking (using it to measure speed and keep track of heading, etc). My LCD screen got some water in it (visible) and the edges started to separate. The visible liquid in my LCD screen vanished slowly. The edges of my LCD still show signs of damage but it doesn't bother me much.
Try heating up your phone a little. Preheat oven, turn it off, open door letting some temp out and stick phone in there, close door. Maybe 50 degrees C or so. That is not enough to ruin solder joints and should not affect the glues in the LCD. The increased temperature will hopefully help expunge any remaining moisture.
Also note, that the phone will likely shutdown if it "overheats" or thinks it is overheating. Humidity will likely have a strong effect on temperature sensors.
See if you can get info from your kernel logs. Is your phone rooted?
Electronics chips have listed humidity ranges they are guaranteed to work properly in. (FYI: military spec chips are basically the same with greater ranges) If any one chip is outside its range the entire system may fail to function correctly. Hopefully you just have a bit of humidity stuck in there that needs some time or help to get out.

I'm kinda a noob. I'll look up how to check the logs and post it. Thanks so much.
Also , I think this should be mentioned , sometimes when I put my phone down or throw it on the couch it switches off. Could this be a battery malfunction. I did order a new battery. So once that comes I should be able to rule that out.
I put it in rice. I haven't tried the oven method. Will give it a shot. Without the battery right?
Thanks a ton.
Sent from my HTC Vision using XDA

Related

Today is the worst day of my life

I woke up this morning to find my 8525 sitting in my computer chair as usual. Only to reach over and grab it, and ....its sitting in three inches of water. I have no idea what happened, or how it got there. All i know is my phone wont turn on, and is totally dead. Is there ANYTHING that can be done to right this horrid tragedy? Any help would be a gift from god. Thanks
Wow.
Sorry about that.
Let it dry out before trying to use it. Since it's wet, you have nothing to lose by taking it apart to facilitate this. You could dry it faster by using a hair dryer but NOT on the heated setting.
agreed; but let it dry for a day or two before you try, you should also put it somewhere that will provide additional moisture evaporation (gas oven with pilot lights or a furnace room, behind a PC fan or the like). i saved my old Sony S710a by letting it bake in my hot car for about 6 hours while i was at work. just make sure its totally dry before you try, and considering you already voided the warranty with the pool of water incident, you might as well take it apart if you can to make sure its completely dry.
hmm, bad luck.
Try all the above suggestions. But make sure you have disconnected your battery
Tried putting the battery back in after about a good 4-5 hours of being in the sun. All i get is a crackling noise when i try to place the battery to the metal conductors
Ewww.. I know it is stressful for you not to switch on the phone, but doing that will just make matter worst. Since you said that it wont turn on, I presume that you've tried it once (Strike 1), and you did it again 4-5 hours later (Strike 2), which usually others just leave it for at least 1 day (but probably the sun does help).
Can you identify what water is it? Can there be mineral within? Which may cause a short circuit somewhere in the phone. You'll need to open up the phone and clean it up somehow.. either DIY or get some phone shop people to do it. Your warranty is 'washed' anyway.
Try This
Stop Drinking!
Read This To Possible Save You Phone
OK, this comes from my many decades in the electronics industry.
1. PULL the battery. Do not put it back in in few hours.
2. Where did the water come from? Was it really water or? You need to know this. It's real important because mostlikly the PCB is contaminated. Anything that got inside has most likely contaminated the board and will cause shorts, intermitent contacts and the like. Even rain or spring water, it's the minerals...
What you have to do most likely is disassemble the unit. Get a gallon of DISTILLED (not Spring) water. Distilled, also know as deionized is free of all minerals. You are going to have to carefully submerge the board without the LCD in the water and gently rub it with a very soft tooth brush while underwater. Next take it out and put in another bath of distilled water. Agitate it gently. This proces should remove any contamination as long as the offending liquid is not sticky or heavily acidic or base. In the case of the later 2, you are most likely screwed.
Ok, so now you have a wet board. Genly shake the excess water off of it. Turn your oven onto WARM. Nothing above 150 F. Let it warm up and then shut the oven off. Put the PCB in the middle of the oven directly on the rack, close the door and come back 8 to 10 hours later. If the board isn't dry, repeat the steps again.
If you are luck and didn't fry it from trying to power it up, it may work again.
I have saved lots of radio equipment from rain & saltwater submergence this way.
Feel free to PM me if you need to. Good Luck.
I used to have a motorola and dropped it into a bucket of water. Dried out in a few days and it was working fine.
my 8525 recently fell in the sink. as soon as i seen it in the sink i pulled the battery out. rigged the phone up on something in the floor so air could ventilate under and over, set the hair dryer on high (but without the heat) and 5 or so ventilation fans from a desktop pc wired to a 9v battery. let the hair dryer go for about 15 minutes but left the fans on over night. took the phone with me to school the next day and left it in the car during both of my classes. came out put the battery in and powered it up. works just fine now
http://www.wikihow.com/Save-a-Wet-Cell-Phone
ive heard the rice thing works, ive alway wanted to flush with alcohol, that would in theory dilute the water and the alcohol would dry out faster.
Ok so heres the deal. I put the battery in. Power up the phone, gets to the vp3g startup screen, then fades to white. Could someone point me in the direction of a tutorial that shows me how to disassemble a Hermes CORRECTLY.
Hopefully ill be able to give it a DI Water bath and breath a little life back into her. Thanks for all the help guys, I really appreciate it
It's drying out slowly. I had a Hermes that did the same thing - eventually getting to the "screen behavior" you describe. I never fully disassembled it. I just let it sit open, with the battery out, keyboard pulled out, and the back off. Eventually (after leaving overnight), it was fine. Worked normal ever since that with one exception.. I had forgotten to pull the SD card. The SD socket never worked again :-(
Moral of the story: don't forget to take out the SD card.
todd_jg said:
It's drying out slowly. I had a Hermes that did the same thing - eventually getting to the "screen behavior" you describe. I never fully disassembled it. I just let it sit open, with the battery out, keyboard pulled out, and the back off. Eventually (after leaving overnight), it was fine. Worked normal ever since that with one exception.. I had forgotten to pull the SD card. The SD socket never worked again :-(
Moral of the story: don't forget to take out the SD card.
Click to expand...
Click to collapse
yeah i got lucky. when mine fell in the sink i had the SD card out and in the laptop doing hw. so i guess im really lucky that the sd socket still works
Not worried about the SD card as much... Anyway, Ive popped the back off of my 8525 after removing a couple screws. On the back of the circuit board there is white material that can be wiped off with a little rubbing alcohol and an ear swab. What is that crap? Ill go further in depth here soon once it fully drys. I sure hope I can get this thing running again, birthday is the 13th and would be a nice little gift to myself to get the phone working. Thanks for the help guys
WOW Just look it here...Thats what I call the Power of Unity man. Great piece of work, info. I love all You people. If the world learns anything from XDA developers then there wont be any more human sufferings I am sure..Enjoy friends the power of forum..
If it fades to white, it is still wet.
You need to let it dry a lot longer before trying to use it.
Sterch said:
On the back of the circuit board there is white material that can be wiped off with a little rubbing alcohol and an ear swab. What is that crap?
Click to expand...
Click to collapse
Well, those are either stuff from the water or stuff from your phone that is washed and gathered to form some dangerous circuits (much like coffee water rings, that things tend to get to the edge of waters). These stuff may conduct electricity, hence making your phone goes nuts. Search and destroy all these 'crap' Good luck. Don't try the phone unnecessarily until you are sure that all 'crap's are gone. One of these 'crap' may potentially kill your phone (ok, it is usually not that serious, but just incase )
Sad story, I was lucky with similar story, but much cheaper. I left my Nokia BH-600 Blue Tooth Head set in my panties and give them to washing-mashine. 40 degrees program for 30 minutes ended by wringing on 800 turns/minute
When I found it in the pocket I just left it to wither up and it didn’t worked. So I tried to re-charge it and WOW it works and the battery has normal capacity.
Video of 8525 / Hermes being dismantled
Sterch said:
...Could someone point me in the direction of a tutorial that shows me how to disassemble a Hermes CORRECTLY ...
Click to expand...
Click to collapse
Don't forget the popcorn: http://www.youtube.com/watch?v=zsljpn74SW0

Likely Death to my G1

today was a horrible day...
apparently leaving your g1 in your pants while they are in the wash doesnt work so well.
does not power on
anyone have any idea what can be done to bring it back or is it most likely fried
and if it is done then does anyone want to buy it as is?
I guess this is an excuse to get a g2
*UPDATE*
I guess no G2 for me just yet.
My phone works great now. Did not do anything special. Did disassemble the phone though so I can wipe down any residue i saw on main components such as the keyboard.
My advice to anyone that has this misfortune is not to rush things. I think i turned my phone on 2 days too early but I got lucky and it did not affect my phone. I figured this out because there was a lot of visible moisture in the screen when the backlight turned on. The keyboard was not functioning correctly either.
I did leave it in rice for about 36 hours but I do not really think that did much as far as the drying process goes. Best thing to do is go to a hardware store and pick up a torx driver set(mine was $4 at Home Depot and it was 36 piece set including torx philips hex slotted and pozi) open up the phone *be careful* of course and let it air dry for 3-4 days (not absolutely necessary to take apart the entire screen but if you feel comfortable go ahead). While it was open I wiped down the main board and the keyboard. I did not take apart the screen because I just did not want to take any other risks(mostly because i knew the screen worked) even though there was moisture, I knew it would eventually dry out. But the key to all of this was patience(I know its tough to go 3-4 days without your baby).
the link for the service manual is http://mikechannon.net/PDF Manuals/HTC Dream SM (A04).pdf
Most of the time, phones can live through the washer and live. You MUST take out the battery and do NOT attempt to turn it on for atleast 48 hours, as you will likely short out the phone. Put the phone in a big bag of rice to let it soak up the water, also use a blowdryer to help dry the phone out. However, your warranty is now void, and there likely will be some remnants of water within your screen.
Yep! worst thing you can do is turn that thing on (or try) before its dry.
my g1 hasnt had a bath but other phones have (none with touch screens) and i take as much apart as possible and leave it that way till the waters gone (then like 4 more days just to me sure )
artifical drying sources reccomended (dont get too hot!!!)
I have had it in rice for about 24 hours now and its sitting on top of my dvr because it gives off a little heat so it should help the process.
just remembered that i didnt remove the sd card...
i was thinking that since it was in the washer with detergent, shouldnt i have just removed the battery and try to clean it in some type of solution...
I have read about a alcohol solutions but kind of scared and i just noticed that there is condensation around the edges of the screen
I'd say take it apart, Blow dry what you can, leave the pieces in a warm area for a couple hours, and then try putting it back together and turning it on.
anybody know how sensitive the screen is because i want to try and blow some heat on it but not sure if it will damage it
best part about handset insurance cover lost or stolen phones...hint hint
bladepbc said:
best part about handset insurance cover lost or stolen phones...hint hint
Click to expand...
Click to collapse
good point but im on att network using the g1 unlocked...
plus i rather not cheat my way out of it because this is my own fault
good news and bad news...
first of all it powers on and boots fine. Secondly the screen seems to be working perfectly (touch and all)
bad news i might have turned it on too early because screen still had noticeable water spots all over it. The keyboard also just spews random letters and commands (ie one of the letters controls the volume)
other good news 1.5 has onscreen keyboard
anyone have any advice on how to go about fixing the keyboard?
Advise for fixing the keyboard: take it apart and clean it.
ok well im taking it apart to clean it out and i see some residue but what should i use?
microfiber cloth?
cleaned out as much as i could but seems like the menu button is now acting up while the keyboard is still messed up
Aside from parts made of paper, parts with thin films (like the lcd), speakers, batteries, or fine parts that are difficult to dry, you can do a very neat job with 99% iso alcohol followed by deionized (aka distilled) water. This includes most (but not all) plastic casing, buttons, pcb boards, etc. Follow up with a hair blowdryer set on low heat (or if you have an electric heatgun, even better).
Get a semi-shallow dish, fill it with the solvent, submerge the part and scrub it lightly with a soft toothbrush. (probably don't scrub for polished surfaces like the exterior casing). Then directly rinse it under a stream of the deionized water. Finally, clean the dish out, fill it with the di water and scrub with the brush.
^ almost exactly what I did to recover a "dead" water soaked phone. Worked great, and learned a lot about how the phone is built
couldnt find 99% near by but got 91% which im assuming should work...
is it ok if i use bottled water(kirkland)?
oh and the spots on the screen are still there (light and dark areas)
thanks for the help guys
kp126 said:
couldnt find 99% near by but got 91% which im assuming should work...
is it ok if i use bottled water(kirkland)?
oh and the spots on the screen are still there (light and dark areas)
thanks for the help guys
Click to expand...
Click to collapse
I bought my 99% iso from Safeway. It comes in a 16oz container. Look for it in the medical supplies aisles. Don't use bottled spring/mineral water, as that contains... minerals. You need buy deionized (also referred to as distilled) water. Distilled water contains a significantly lower amount of mineral ion, which for the purpose of cleaning electronics would be considered contaminants.
Do the spots appear to be blotches of moisture? Perhaps there is fluid trapped between the various layers of the lcd.
ok ill go check out safeway tomorrow morning. thanks for clearing up the water thing.
it looks like its moisture because after leaving it off for about 5 or 6 more hours i saw a few spots fade a little bit.
I will take the screen apart tomorrow as well. Any special instructions on handling the screen or even cleaning it?
You might want to search for the service manual for the G1. It details a complete teardown and rebuild of the dream hardware.
some sort of a miracle just occured because my phone is not acting up at all anymore and i didnt even clean it with the alcohol solution yet.
Just woke up in the morning and turned on the phone and worked perfectly, with absolutely no problem with the keyboard(except that i think i forgot a screw and a few keys are a little loose) everything works fine.
only problem is that the screen still has what looks like condensation.
but the blotches in the screen seem to be slowly fading. Gonna pop it open right now and leave it out overnight.
thanks for the help
oh and the manual has a few mistakes in it as far as procedure goes but any person with common sense should be able to get past those
Damn, thats rough man. I dropped both my old phones in the toilet(damn you superbowl, damn you!!!)and both of them worked after taking them apart and drying them off but never really worked 100% the same...
Just a note too, those were non-touch screen phones.
Best of luck.

Phone fell in water

Still works but the screen is foggy and flickers alot.
A friend of mine was telling me that something in the batter triggers and sprint can tell if it had water damage or not. How can i tell and look for that?
I also want to take it in but dont want sprint finding out about the water damage. Is there a loophole?
Shifted from my EVO
Well first things first. Turn it off, pull the battery. Do not try to restart it. You have several choices to dry it out. One really and proven one is rice. Fill a container half way with rice. Then stick your phone in the rice with the battery out, and the cover off. Push it down into the rice, and let it stay there for at least two days in a warm dry place. The other was actually used by a member here on XDA. He used is a Dehydrator. Not sure of the details, but it definately worked. I'd say set it on low and leave it there for at least 24hrs. Sprint can tell if the phone has been dropped in water by checking the water damage indicators. On the phone itself, and the battery. They're Red checkered squares. They turn bright Red when dropped in water. Although it has been proven they're not very reliable.
^^ is correct about the indicator on the battery. Its a little sticker and i always pull it off and take it to them. Once they asked me about the sticker and i just told them i have no idea what your talking about and that i didn't know about any sticker. Playing dumb helps
Take battery out....Stick it in oven on warm heat...take it out after 10 minutes to let it cool down.....repeat like 4 times.....
Sounds freaky but i fixed an iPod Touch and a Droid X with this method
Thanks for the replies guys. I ended up using a hair dryer on heat. It's not that bad of a condition. Everything seems to work properly (so far). This would happen when a ICS beta ROM comes to our phones... -_-
is there any other indications that sprint would be able to tell if it had water damage?
Enraged21 said:
is there any other indications that sprint would be able to tell if it had water damage?
Click to expand...
Click to collapse
Nope, unless there is still water in it when you take it there, oh and don't use a hair dryer, all that does is "push" water in deeper through all the electrical wiring and circuits, plus it can melt parts of the device
Personal expierence lol
notsointeresting said:
Nope, unless there is still water in it when you take it there, oh and don't use a hair dryer, all that does is "push" water in deeper through all the electrical wiring and circuits, plus it can melt parts of the device
Personal expierence lol
Click to expand...
Click to collapse
+1 to not using the hairdryer . It will not work as well as you think. There's a good chance that you still have moisture in the device.
See I wouldn't have known that lol. Thankss!
Why we're here.

dropped my v20 in a puddle on monday... UGH

Hey all,
I dropped my V20 in a puddle on monday. It spent about 5 seconds submersed. I did remove the battery and put it in front of a airconditioner fan. When I got home I put it in a bag of rice. Today the screens backlight is messed up. The only area that lights up is the upper right. The rest is displaying info but no backlight unless I tap the phone hard on a flat surface. Then entire screen lights up for a while then it goes back to the upper right being lit up. I put it back in dry rice tonight. Everything on the phone works 100% but the backlight. What can be done. I dont want to buy another phone and I dont have insurance.
Leave in the rice bowl for another day and then check ✔
Sent from my LG-H990 using Tapatalk
Weren't these phone supposed to be almost waterproof?
phatmanxxl said:
Weren't these phone supposed to be almost waterproof?
Click to expand...
Click to collapse
V20 never meant to be waterproof. G6 yes.
Sent from my LG-H918 using Tapatalk
I found success a few years ago by shoving my phone with the battery cover and battery removed into the flexible tubing of a shop-vac (no attachments on the end) and running it for about an hour. I did this immediately after taking it from the toilet it dove in; this sucked the air through it and pulled internal water out, rather than blowing air on it and not bothering the internals much at all. After that I put it in rice for 2 days to try to make sure all the water is out and evaporated. From some of my friends in the electronics field I hear it's the corrosion that hurts more than the water, and turning on the phone before all water is removed is about the worst move you can make. This may be more useful info for next time, but wait until all drying techniques are employed before putting in the battery and turning on the phone/tablet. Good luck.
youll need to open it, and take denatured alcohol and clean all the parts using a tooth brush, each time u put battery in/charge ur ruining the board and circuitry, need to clean off the corrosion before causing more damaged, but sadly to say if its been a few days and been in rice/dried up when you open it i wouldn't be shocked you'll find the cable that connects ur screen is fried at the board side and wont be repairable.
I forgot about that. This phone is easy to take apart. Iirc, it's 16 screws or so.

Samsung A40 took a little swim... but signs of life! Any ideas?

Hi all. My trusty A40 had a little mishap at the toilet (!) and drowned. I gave it a rinse with alcohol and dried it for days in 40C ovens etc. but no life was recovered. A few days ago I decided to try charging it anyway and nothing happened... then this morning my old alarm went off! The screen is still completely dead, and I didn't notice any vibration but I always had that turned off. When I plug it in and out with the USB cable it makes the correct beeps. I can even snooze that alarm with the power button and turn it off with volume down.
When I connect it to my PC though I don't see any drive come up, I guess it doesn't default to USB file transfer so maybe this isn't a surprise.
So is my phone alive inside and just has a completely dead screen? The alcohol has conveniently taken the back off by dissolving the glue. Also, I've already got a new Redmi Note 11 so I'm happy to tinker with this phone and I've replaced screens before no problem.
Is this phone worth buying a new screen for do you all think or would that be a total waster of $35?
Thanks!
(PS: sorry if not in correct forum here, not sure which one is most appropriate for hardware / repair issues)
Wrong. You may still be able to save it...
Pull the back cover and disconnect the battery asap. Allow to dry completely before powering up. Fan blowing on it with the phone on it's side in a very warm room for at least a couple days.
The mobo power section or the soc are the most likely areas to fail from corrosion. Possible the connectors are still retaining brown water
Do Not use anhydrous isopropyl alcohol as a drying agent if it has an LCD as it will poison it.
blackhawk said:
Wrong. You may still be able to save it...
Pull the back cover and disconnect the battery asap. Allow to dry completely before powering up. Fan blowing on it with the phone on it's side in a very warm room for at least a couple days.
The mobo power section or the soc are the most likely areas to fail from corrosion. Possible the connectors are still retaining brown water
Do Not use anhydrous isopropyl alcohol as a drying agent if it has an LCD as it will poison it.
Click to expand...
Click to collapse
Thanks but I've already completed the drying. The CPU is working in there, in fact when I put in a SIM it will even ring when I phone it. I'm just wondering if I can be 100% sure everything is OK apart from the screen? Is there anything else I can check?
DannySolo said:
Thanks but I've already completed the drying. The CPU is working in there, in fact when I put in a SIM it will even ring when I phone it. I'm just wondering if I can be 100% sure everything is OK apart from the screen? Is there anything else I can check?
Click to expand...
Click to collapse
If it's dry and still malfunctioning the damage is likely to the mobo, is permanent and will be progressive. Corrosion never sleeps.
You can disassemble and check the ribbon cable pins going to the display for moisture and/or corrosion damage. The mobo power section and the BGA chipsets* (can't see the damage as the contacts are under the chip) are the most likely to be damaged.
With water exposure time is of the essence. You might save the device if you're fast enough and do the right things. Salt water is sure death.
* you sure it's dry?!! BGA chipset's don't have airflow around the pins. Any water under the chipset will also be retained by capillary action...
blackhawk said:
If it's dry and still malfunctioning the damage is likely to the mobo, is permanent and will be progressive. Corrosion never sleeps.
You can disassemble and check the ribbon cable pins going to the display for moisture and/or corrosion damage. The mobo power section and the BGA chipsets* (can't see the damage as the contacts are under the chip) are the most likely to be damaged.
With water exposure time is of the essence. You might save the device if you're fast enough and do the right things. Salt water is sure death.
* you sure it's dry?!! BGA chipset's don't have airflow around the pins. Any water under the chipset will also be retained by capillary action...
Click to expand...
Click to collapse
I submerged the whole thing in alcohol and then dried it at 50C for 72 hours. Everything I can test works perfectly (including ringing when called) but the screen is totally dead. I cleaned that socket but still nothing.
Is it possible the water/alcohol damaged the screen and not the motherboard? Sound unlikely but that's what they symptoms indicate.
So is it worth a bet on fixing with a $30 new screen or not do you think?
DannySolo said:
I submerged the whole thing in alcohol and then dried it at 50C for 72 hours. Everything I can test works perfectly (including ringing when called) but the screen is totally dead. I cleaned that socket but still nothing.
Is it possible the water/alcohol damaged the screen and not the motherboard? Sound unlikely but that's what they symptoms indicate.
So is it worth a bet on fixing with a $30 new screen or not do you think?
Click to expand...
Click to collapse
I think it's the mobo but you're holding it. I don't know how suspectable the the display is to water damage. Did you use anhydrous isopropyl alcohol?
blackhawk said:
I think it's the mobo but you're holding it. I don't know how suspectable the the display is to water damage. Did you use anhydrous isopropyl alcohol?
Click to expand...
Click to collapse
All I could find was 100% ethanol I'm afraid and only realised the FAQs saying "alcohol" were talking about isopropanol after I'd finished. Isn't ethanol also used for mobo cleaning? Maybe that destroyed the screen though.
DannySolo said:
All I could find was 100% ethanol I'm afraid and only realised the FAQs saying "alcohol" were talking about isopropanol after I'd finished. Isn't ethanol also used for mobo cleaning? Maybe that destroyed the screen though.
Click to expand...
Click to collapse
Water can damage AMOLED displays as well it seems. Best to keep all solvents away from the display. Methanol alcohol should never be used.
Ethanol not sure about.
blackhawk said:
Water can damage AMOLED displays as well it seems. Best to keep all solvents away from the display. Methanol alcohol should never be used.
Ethanol not sure about.
Click to expand...
Click to collapse
OK I think then I'll shoot the moon and buy a replacement screen... would be a terrible waste to throw this phone out if that's all that's wrong.
Plus we would now know that ethanol is OK for phone motherboards, plus it takes the glue off the back of a Samsung A40!
DannySolo said:
OK I think then I'll shoot the moon and buy a replacement screen... would be a terrible waste to throw this phone out if that's all that's wrong.
Plus we would now know that ethanol is OK for phone motherboards, plus it takes the glue off the back of a Samsung A40!
Click to expand...
Click to collapse
Use anhydrous (preferably 96% minimum 93%) isopropyl alcohol.
I wouldn't go too nuts trying to save it due the price point and especially the fact it has known water damage. Buying a used one in good condition be a viable option if you really like that model.
blackhawk said:
Use anhydrous (preferably 96% minimum 93%) isopropyl alcohol.
I wouldn't go too nuts trying to save it due the price point and especially the fact it has known water damage. Buying a used one in good condition be a viable option if you really like that model.
Click to expand...
Click to collapse
I've just notices that with this model there is a pretty hefty flex between the top and bottoms boards with a connector on each end. This must also carry screen data so I'll give that a good clean out.
Second hand AMOLEDs are impossible to find for the A40, they all have horrible burn in.
I'm going to get the INCELL LCD version already in a new front frame and go from there. Should still be a decent back up phone.
And the fun of fixing it is what it's all about anyway, right? :-D
You grossly underestimate the corrosion process that's likely been initiated. I'm not so optimistic about it ever being reliable again.
I can understand corrosion while the phone is wet... not after it's been soaked in alcohol and completely dried. The process doesn't continue.
I'm going to guess it's the screen only that's broken as I see no other issues... I bought a cheap LCD replacement already in a new frame for $30.
Let's see how it goes.
DannySolo said:
I can understand corrosion while the phone is wet... not after it's been soaked in alcohol and completely dried. The process doesn't continue.
I'm going to guess it's the screen only that's broken as I see no other issues... I bought a cheap LCD replacement already in a new frame for $30.
Let's see how it goes.
Click to expand...
Click to collapse
Yes, yes it does. Most don't understand how insidious it is. The oxides formed are insoluble in water and alcohols. Many are hygroscopic and attract moisture, then you know what happens...
This is the same reason you never buy a flood damaged car. Even if everything is working it will start to fail sure as the sun rises in the morning.
Sometimes if you pull the battery before the flooding it can be saved... sometimes. Always check for signs of water damage when buying a vehicle. EV's just burn to the ground when water damaged
Energized circuits greatly exacerbate and accelerate the corrosion process. You see the results. The future is uncertain for that phone but it will likely eventually fail from that one prolonged exposure.
DannySolo said:
I can understand corrosion while the phone is wet... not after it's been soaked in alcohol and completely dried. The process doesn't continue.
I'm going to guess it's the screen only that's broken as I see no other issues... I bought a cheap LCD replacement already in a new frame for $30.
Let's see how it goes.
Click to expand...
Click to collapse
tell results
OK so the new screen eventually arrived and I turned on the phone then plugged in the new screen... nothing. But I guess you have to plug in the screen and then turn it on, but that seems to be impossible with the A40 where you need to attach the middle frame for to use power/volume, and that blocks the screen connector.
Is there some way to bridge those little spring contacts on the PCB to reproduce a power on signal? Otherwise I'll just have to do the whole replacement process and see what happens at the end!
Just as well there's holidays coming.
DannySolo said:
OK so the new screen eventually arrived and I turned on the phone then plugged in the new screen... nothing. But I guess you have to plug in the screen and then turn it on, but that seems to be impossible with the A40 where you need to attach the middle frame for to use power/volume, and that blocks the screen connector.
Is there some way to bridge those little spring contacts on the PCB to reproduce a power on signal? Otherwise I'll just have to do the whole replacement process and see what happens at the end!
Just as well there's holidays coming.
Click to expand...
Click to collapse
i do not know, sorry, never opened my a40, still using it right now

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