Touchscreen on my ds was replaced recently and everything worked fine except automatic brightness. When i turn automatic brightness on, it doesen't work, brightness stays on it's current level. When i lock the phone and unlock it again, brightness is on it's lowest level, so i have to set it manualy. Even when i am talking on the phone, screen is allways on and i need to press lock button to turn it off and again to turn it on after call ends. I think that touchscreen wasn't placed well, and brightness sensor can't work because of it.
What do you people think?
Yeah, it sounds like the light meter and proximity sensor weren't connected properly when the new digitizer was fitted.. although I'm pretty sure they are connected via the same ribbon cable that the digitizer part is connected with. Maybe the new digitizer doesn't actually have a light meter and proximity sensor?
Did you get it replaced at a shop or did you do it yourself?
I am awaiting the arrival of a new digitizer to fit to my Desire S as a matter of fact!
EDIT: actually I see that the light meter and proximity sensor don't seem to be part of the digitizer. So either they are not connected properly, or they are obscured. It might be useful to check the sensor values with the app AndroSensor.
raymosaurus said:
Yeah, it sounds like the light meter and proximity sensor weren't connected properly when the new digitizer was fitted.. although I'm pretty sure they are connected via the same ribbon cable that the digitizer part is connected with. Maybe the new digitizer doesn't actually have a light meter and proximity sensor?
Did you get it replaced at a shop or did you do it yourself?
I am awaiting the arrival of a new digitizer to fit to my Desire S as a matter of fact!
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Click to collapse
The light meter and proximity sensor aren't part of the touchscreen (I am fairly sure having replaced mine twice). The most likely cause of this is that the double-sided sticky tape which holds the LCD and the digitizer together has been put in the wrong place and has obscured the sensors. Take it apart again, making sure to use a hair-dryer or similar to free the double-sided tape first, and re-assemble carefully. Edit: Proximity Sensor Flex Cable Ribbon For HTC Desire S G12 S510e the sensor is definitely a separate component, may be loose after the rebuild.
Have a look at the Desire S teardown video if you need guidance.
raymosaurus said:
Did you get it replaced at a shop or did you do it yourself?
EDIT: actually I see that the light meter and proximity sensor don't seem to be part of the digitizer. So either they are not connected properly, or they are obscured. It might be useful to check the sensor values with the app AndroSensor.
Click to expand...
Click to collapse
I 've replaced it in the shop. Androsensor shows waiting for event for light and proximity.
SimonTS said:
The light meter and proximity sensor aren't part of the touchscreen (I am fairly sure having replaced mine twice). The most likely cause of this is that the double-sided sticky tape which holds the LCD and the digitizer together has been put in the wrong place and has obscured the sensors. Take it apart again, making sure to use a hair-dryer or similar to free the double-sided tape first, and re-assemble carefully. Edit: Proximity Sensor Flex Cable Ribbon For HTC Desire S G12 S510e the sensor is definitely a separate component, may be loose after the rebuild.
Have a look at the Desire S teardown video if you need guidance.
Click to expand...
Click to collapse
This is my third touchscreen. First (original) one was damaged after replacing lcd, second had damaged digitizer and this one works but looks like it was putted wrong.
I can't repear my phone, cuz i don't have proper tools to do it
I ll bring phone to shop to take out and put back touchscreen, and hopefully it will work.
Sent from my HTC Desire S using xda app-developers app
Related
Got a brand new DS couple of days back and....right from opening the box..the first call..proximity sensor is playing up. Most times i have to pull out the battery to end the call.
Tried the following with no result
1) Installed DHD Proximity re-calibrator
2) Factory reset
3) Installed Vitrous Unity 1.27
4) Back to factory rom, blew hard between ear piece and sensors
5) Removed screen protector and tested
I have S- Off and really dont want to go through the pain of visiting HTC. Would greatly appreciate some help here ...as always !
did you press the back button in between the call?
this has happened to me on stock rom only if i press the back button during the call
i haven't tried it on LBC rom yet
sujitht said:
Got a brand new DS couple of days back and....right from opening the box..the first call..proximity sensor is playing up. Most times i have to pull out the battery to end the call.
Tried the following with no result
1) Installed DHD Proximity re-calibrator
2) Factory reset
3) Installed Vitrous Unity 1.27
4) Back to factory rom, blew hard between ear piece and sensors
5) Removed screen protector and tested
I have S- Off and really dont want to go through the pain of visiting HTC. Would greatly appreciate some help here ...as always !
Click to expand...
Click to collapse
I noticed that only half the proximity sensor is visible, the other half is covered by what appears like black plastic part. Is this how it is supposed to be?
My proximity sensor is completely visible.
No..i haven't pressed the back button.
mikeyd85 said:
My proximity sensor is completely visible.
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Click to collapse
Is it the left sensor of the two sensors?
I have exactly the same problem. The issue seems to be that Desire S proximity sensor active distance is 9cm, when on my older Desire ir is only 1cm.
When working with some Proximity sensor tools, I have discovered, that you need to put your phone like 25cm (have no idea, how many inches) away from any obstacle in 30degree radius. If that is followed, I haven't been able to recreate a battery pull ocasion of sensor failure. However in real life talking, it is impossible to guarantee.
That there must be some sensor configuration possibilities, so that we could decrease sensibility to minimum distance. Such change should solve this sensor bug, as it would be normal operation distance.
Maybe some dev knows, how to play with proximity sensor?
Yeah, I have had this problem a long time with this phone didn't happen that much at first then it became more and more apparent.
Found the problem and solution, it lies with the screen protector, yes it might be transparent but the sensor detects it. Using a sensor testing app from the market it suggested the sensor was covered almost all the time.
So the solution was replace the protector with new one but cut an arc at the top just big enough around the sensor at the top left, easy fix now in call screen is more responsive.
Sent from my HTC Desire S using XDA Premium App
Totaly plausable question,but where is the sensor?
bleach1 said:
Totaly plausable question,but where is the sensor?
Click to expand...
Click to collapse
Top left of the screen in opposite place to led, if you tily screen under light you should see the sensor reflect back at you
Sent from my HTC Desire S using XDA Premium App
Thanks will adapt my screen protector
Sent from my HTC Desire S using XDA Premium App
Proximity sensor
I've been having the same issue. I gave my DS to the HTC workshop and they said it was faulty hardware. They will be replacing the system board since the sensor is soldered to it (under waranty).
Before sending it in, I tried a few roms and hacks but it was never resolved. I recommend you visit your local HTC warranty center.
I have the same problem with the proximity. I installed an app called Anyunlock which seems to have solved the problem. It seems to be able to wake it when the screen turns off after a call. The app allows you to unlock with the volume key and replaces the lock screen with its own. I hope this keeps working
First time poster, though been a regular lurker.
It seems I have a slightly dodgy proximity sensor. Have checked with one of the proximity sensor apps and while the sensor detects if I have my hand over it, it is very unreliable when I take my hand off. It can take from anywhere from 1 to 30 seconds or sometimes never.
While ive been through other threads where people have a completely failed sensor, does anyone have this intermittent problem. Also is this a hardware or software issue.
Im currently htc-dev unlocked running Pacman v15.0.
Out there is a tool for recalibrating the sensor, but you would need to be S-OFF I think and it's done with a service tool (a special PG88DIAG.nbh)
Let me know if you are willing to try it, but it is VERY dangerous if you do the wrong things.
I had the exact problem from the very beginning. Got a phone and the very next day had a screen protector applied. For a few days proximity sensor created problems. The screen would go black when the call started, but until the call did not end, there was no way to bring the screen back. So, I used an app just like yourself to check and saw the same thing happening. Ultimately read extensively and realised it was due to screen protector. Took a scissor and cut off the protector above the sensor. A few months later when I had a new protector (of a different company) applied the same problem reappeared, so I had to cut it off from the top. Except that this time around I was sort of expecting it. I hope this help! :fingers-crossed:
I had the same problem and it continued no matter whether i remove the protector or cut the portion....im unable to most awesome ROM's.......only n sense 4.0 im able to re turn on the screen using power button.if there a way to completely disable this turn off during calls irrespective of the ROM its highly appreciated......
Looking forward for the solution
Jann F said:
Out there is a tool for recalibrating the sensor, but you would need to be S-OFF I think and it's done with a service tool (a special PG88DIAG.nbh)
Let me know if you are willing to try it, but it is VERY dangerous if you do the wrong things.
Click to expand...
Click to collapse
An update to my situation.. I ordered a new proximity sensor on e-bay and have replaced the same on my phone now. While I was at it, I cleaned up the window as it was pretty grimy and could have been the source of trouble. Also cleaned up the contacts with Isopropyl alcohol. End result.. Im still having the same problem!!
Im pretty sure now that its not a hardware problem and has to do with the calibration. What I have noticed that the sensor works fine in bright sunlight but not when there is less light around. Also am not using a screen guard!
Would it be possible to guide me to the right tools to recalibrate please?
Sorry, I haven't done this myself, but I'll search a bit how it's done by HTC.
They are using a special holding station where the devices are calibrated.
Hey guys,
I have a Droid Incredible 2 that I dropped in a cup of water for a small amount of time. I let it dry, and when I turned it on the screen was very dark. There was still an image, but it was almost impossible to see. The phone still works, it will text and call, but it is almost impossible to see things.
So, I replaced the screen with a new unit, confidant that it was the problem. But, of course, that did not fix it. I am out of ideas, so I am hoping someone here can chime in! (My question is what else could be the cause?)
Thanks for any help!
If your phone is in uder warranty replace it
Sent from my GT-S5360 using xda app-developers app
Did you replace the actual LCD screen or just the touch panel (piece of glass on the front of the phone)?
If you did replace the LCD that sounds like the backlight isn't turning on. This could be for a variety of reasons, but probably something that powers the backlight on the phone's circuit board got damaged by the water since the light itself should be part of the screen assembly. You could try removing the battery and leaving it in a bag of dry rice or those dessicant packets (things that say "Silica Gel - Do Not Eat") that come in shoes, electronics, etc. for a few days and see if maybe it's just some more water that needs to dry out, but if that doesn't help you're probably looking at a circuit board replacement or buying a new phone like andromaki suggested. It also wouldn't hurt to take the phone apart again and check to make sure you plugged in all the cables that come out of the screen and none are upside down/not in the connector all the way.
* Yes, I'm specifying dry rice for a reason. I once advised someone to stick a phone that got dropped in the sink into a container with some rice, and they put it in some leftover fried rice from Chinese take out, which did not help matters.
I agree with lroop. "Very dark" sounds like the backlight or backlight inverter (power supply) might be bad. I would assume that the backlight and inverter would all be built into the display, but that may not be the case. If the inverter is separate from the LCD and it has gone bad then switching the display would not fix the problem.
Forgive if this has been mentioned, it is difficult to sift old threads from my phone.
Mine has had the issue of front 5 buttons not working. The strange issue is that they do work when I reboot, until the phone sleeps. Then they do nothing. it makes me wonder how it can be hardware related. Tried restoring to stock and it comes back
The symptom seems software but my inner helpdesk says a full restore points to hardware. Thoughts? Replacing that flex cable would be a pain (I did open her up to check for loose cables)
any thoughts at all?
This has now turned into when i slide the screen open, the screen shuts off. Please any help?
matttrick said:
This has now turned into when i slide the screen open, the screen shuts off. Please any help?
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Click to collapse
That sounds like a failing slide flex cable. They typically run under $20 on eBay. If you decide to do the work yourself, just be careful and take it slow when separating the housing from the LCD. HTC used a ton of double sided tape to attach the LCD. I'd recommend reviewing the ifixsmartphone repair guide. The have some great shots of the interior of the phone.
Also watch a couple of YouTube videos showing the dis-assembly process. This video from Repairs Universe shows the process pretty well. Note the cables at 6:52 in the video.
On the top, the left cable is a part of the slide flex cable and it contains your front facing camera, light and proximity sensor and speaker.
The center cable is for the digitizer. Twist or flex this too much and you can ruin your digitizer.
The right cable is the LCD cable.
On the bottom you have the other end of your slide flex cable with the front buttons and trackpad.
Hi,
My customer brought to me a Samsung A40 after water damage. After cleaning up and replacing the screen to the original one everything looked great until the first call. It appeared that both the light sensor and the proximity one are not even visible under *#0*# menu. I can easily bypass that by switching the power off button to end the call but since then the smartphone also doesn't turn off the screen :/
I've set to turn off the screen after 15s, udpated the software, performed wipe cache and full factory reset. None of them had worked. Screen if not manually locked remains ON all the time. Can it be connected somehow to the damaged sensors? During the call screen is still blinking.
I would be gratefull for any tip in this case.
I can even root the device to just get rid of that "not turning off of the screen". Is there some app maybe to force screen lock after some time of not active?
BR
Check for moisture and/or corrosion on the ribbon cable connectors.
Water damage is unpredictable especially if the battery is not pull immediately.
The best thing to do is flush liberally with anhydrous isopropyl alcohol* and completely dry.
Salt water is always lethal... eventually.
*isopropyl or any solvent will poison LCDs, never use it near them. Use best judgment otherwise.
blackhawk said:
Check for moisture and/or corrosion on the ribbon cable connectors.
Water damage is unpredictable especially if the battery is not pull immediately.
The best thing to do is flush liberally with anhydrous isopropyl alcohol* and completely dry.
Salt water is always lethal... eventually.
*isopropyl or any solvent will poison LCDs, never use it near them. Use best judgment otherwise.
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Click to collapse
Thanks for the reply. I've already put the phone apart and cleaned every single pcb, connectors, cables with isopropyl in ultrasonic wash and manually with toothbrush. Left it to complete dry for about 48 hours and put it back together. Before that the phone was completely dead. Now everything is working except those 2 sensors. I don't have any datasheet to this mainboard so i don't even know what else can I measure.
Whole thing happened like 2 months ago and the customer just tried to manually lock the screen but its not always possible and he noticed that his battery is drawing pretty fast due to screen on. On the current stage I'm just looking for some workaround to force the screen sleep and remains until power button pressed.
What is funny. The screen goes to sleep after 15s when connected to charger and locks after 1 minute just like I've set in the settings...
When it is inpluged from charger screen remains awake all the time :/ Maybe that's some clue for anyone?
More tests: light sensor seems to be working correctly. It adjust brightness when covered and uncovered despite the fact that it is not visible under "sensors" in "*#0*#" menu Proximity sensor still doesn't work. When calling someone screen remains black and just flashes from time to time...
But the main problem is still with those screen always awake. It is only going to sleep when connected to PC or charger :/ No moisture visible anywhere. I've found a post with the same problem but there was visible that phone was detecting periodically USB connection when it was unplugged. In my case Samsung is not noticing anything on tray etc. It just remains awake until pressed power button or connected to charger
I will try to replace USB charging PCB and give You the feedback
Maybe contacts on a BGA chipset corroded and shorted out a logic circuit pathway.
If it's under a chipset... game over, however it may on be an accessible area. Optical aid and good light.
It's also possible the water shorted out something enough to damage a chipset.
Replacing the USB PCB did the job. Everything works correctly, screen is going to sleep. Moreover the proximity sensor has started to work correctly
We may close this topic.
For the record, you can use *#77692# for the light sensor and proximity sensor if they don't show up in *#0*#.