Hi!
I have a strange problem with one desire...
After changing the broken lcd screen, the display is very yellowish, everything witch was "white colour", is now yellow...
I have tested 4 lcd-s, changed the rom (multiple ROM-s), but same result...
Strange is even when i try to make color correction with Calibrator (calibrated-signed-42-Universal)... i can change red and green, but changing blue is not working to obtaining "white"...so it remain the same color with values (for blue) from 0 untill 1000.
Is there an another program to make color correction, or is a hardwere fault?
Any ideas?
Thanks
How exactly are you changing the "lcd"
There are two types of screen that the desire can use (depending on your model) amoLED (led!) or SLCD (super lcd). So unless you replace your screen with the correct replacement type for your specific handset your going to have strange issues.
Maybe you should take a very close look at your display, with a magnifying glass or a microscope and check if the blue sub-pixels work at all. It seems as if they don't work and you get amber colors.
I have received the phone with broken display, after power on, it was dark screen no display...so obviously i changed the lcd with the same model, wich is a Samsung (AMOLED i think), P/N: 60H00287-00.
I'm pretty sure it's the correct type of display if anything is being displayed. The problem might be the connection between the mainboard and the screen. Perhaps you've accidentally damaged it when changing the screen? Maybe you should post some pictures of your assembly showing the connection. That might let someone see the problem and suggest a solution.
if you need to understand better the problem i can upload some photos of the Desire...
The assembly is correct, i checked it, i think it`s a micro crack on the mainboard, suffered during the shock, so i will resolder the contacts... i will keep u updated...
meanwhile, i wait other opinions also..
I have found the problem...It was the filter near the lcd connctor...they are 3 filters...for each color...RGB...so after resoldering all of them, and 6 hours of work...it`s working...
Amokh said:
I have found the problem...It was the filter near the lcd connctor...they are 3 filters...for each color...RGB...so after resoldering all of them, and 6 hours of work...it`s working...
Click to expand...
Click to collapse
nice, hasn't taken you too long to identify it really either.
Amokh said:
I have found the problem...It was the filter near the lcd connctor...they are 3 filters...for each color...RGB...so after resoldering all of them, and 6 hours of work...it`s working...
Click to expand...
Click to collapse
I have the same problem as you, is it possible to post instruction and a picture .
I would like to fix the problem and don't know how.
Best Regards
Related
Hallo to all!
i've already tryied to search this topic in all the forum, but didn't find anything...pls tell me if something similar already exists!
so my problem: i have a touch pro 2 (RHOD100), and the last week i broke the touch screen (due to accidental heavy pression on it)...all works, but no TS function...
so (here starts my trouble) i decide to change by myself...i bought a new one (only TS) on ebay and make the change....
no problem with the hardware change, but now my display stay white...
some consideration:
- OS start with no problem (start sound and button sound)
- all flats are plugged correctly (checked many times)
- the backlight of the lcd works well (low light after some time)
some help? maybe i forget something important?
thanks a lot in advance to any helpers!!
db491 said:
Hallo to all!
i've already tryied to search this topic in all the forum, but didn't find anything...pls tell me if something similar already exists!
so my problem: i have a touch pro 2 (RHOD100), and the last week i broke the touch screen (due to accidental heavy pression on it)...all works, but no TS function...
so (here starts my trouble) i decide to change by myself...i bought a new one (only TS) on ebay and make the change....
no problem with the hardware change, but now my display stay white...
some consideration:
- OS start with no problem (start sound and button sound)
- all flats are plugged correctly (checked many times)
- the backlight of the lcd works well (low light after some time)
some help? maybe i forget something important?
thanks a lot in advance to any helpers!!
Click to expand...
Click to collapse
When you changed the touch screen did you remove the flex cable that connects the upper half of the phone to the motherboard? Are you sure you didn't break the LCD screen itself?
hallo,
yes i remove the flat, and plug back again where changed - when i press on the TS (with white screen) i can ear the "tap"
i cannot be sure, but it light on...i think is enought...or not?
thanks for you're help!
db491 said:
hallo,
yes i remove the flat, and plug back again where changed - when i press on the TS (with white screen) i can ear the "tap"
i cannot be sure, but it light on...i think is enought...or not?
thanks for you're help!
Click to expand...
Click to collapse
It looks like like either the flex cable got damaged or it's not plugged right. It could also be the LCD flex, where lcd plugs into the small connectors under the four buttons at the bottom of the touch screen not being connected properly. Did you lift the small levers where the flex cables go into the mother board or where the lcd/touch screen gets plugged in or did you just push them in?
i lift the lever where pull out the flex, and pull it down when restore the connection... and i'm almost sure about connection, also because them are so "stricted" in the plug himself...
but i find really strange that the lcd is on (completely white), you don't think so?
also if it is damaged, should be not white...or maybe, as you say, a flat problem?
this evening i will re-open it for a check...i don't know what else do...
maybe i will try to buy a complete kit (TS+lcd)...
i will surely let you know
db491 said:
i lift the lever where pull out the flex, and pull it down when restore the connection... and i'm almost sure about connection, also because them are so "stricted" in the plug himself...
but i find really strange that the lcd is on (completely white), you don't think so?
also if it is damaged, should be not white...or maybe, as you say, a flat problem?
this evening i will re-open it for a check...i don't know what else do...
maybe i will try to buy a complete kit (TS+lcd)...
i will surely let you know
Click to expand...
Click to collapse
The screen being white, means it's receiving power but not video signal. There coud be different reasons for that. It happened to me couple of times. What I did was lift the connector lever, pull the flex connector out (where it connects to the motherboard) just a tiny bit and secure the connector with the lever and it worked. If the flex cable is going bad it could be that just one line or two are going bad not the whole thing, thus still delivering power but not video signal.
If your problem is with the flex buying a new screen/digitizer will not fix it. When you screen is white does it go out if you slide out the keyboard?
hallo,
sorry for late answer,
i make some test with flat, but the result is the same...
the screen always stay white, but i can ear the start sound, the pression sound, etc...so it seems it's just the lcd...
maybe i can try to buy a complete set lcd+ts?
thanks for answer
db491 said:
hallo,
sorry for late answer,
i make some test with flat, but the result is the same...
the screen always stay white, but i can ear the start sound, the pression sound, etc...so it seems it's just the lcd...
maybe i can try to buy a complete set lcd+ts?
thanks for answer
Click to expand...
Click to collapse
I could be wrong, but I think it's the flex cable that is bad not the LCD screen itself. The flex cable has several small thin lines, what is happening is the power is getting to the LCD screen but the video signal is not, so most probably one of teh video signal lines is broken.
Hi all! I know there're several topics about stuck pixels but my problem is a bit different.
Today I got this phone from a friend and now I've noticed there's a cluster of stuck pixels on the screen (only in black background) - very small dots (like dust) in green, blue and red colors.
Here's a photo of another One V with the same problem, I found it on the net, don't know if it's a common problem.
I've tried different repairing software without any success.
Otherwise screen is working properly and there aren't any functional problems, but these pixels are just irritating.
And I don't know if I continue using it in this condition, stuck pixels won't become more and more...
Anyone faced the same problem? I hope there's another solution except changing the screen.
That is a broken LCD. Needs repair.
Please ask all questions in the Q&A section. Thread moved there.
Repair lcd
Sent from my One V
What kind of repair do you mean? Replace the whole screen or what?
give it to the htc care, they'll replace the display unit
I have no warranty, I bought it used as I said, so if I have to pay for screen replacing, this phone will become more expensive than a new one.
Could it get worse if I continue using it in this condition?
Dude open it ur self if u can or take it to there u can't do.anything externally off its hardware problem
Sent from my One V
hi all!
please help!
after screen change my phone just charging at least led shows green and red light but do not switch on.I can see just white shadow for 3 sec approx.I bought lcd with digitizer mounted together.I do not know what to do...
did you do it yourself? is your screen an original spare part or a replacement?
could not be a light sensor bug because it's only active after booting android and you should at least see your bootscreen. either faulty cheap counterpart or installation gone wrong. take it to a professional phone repair center and let them fix it. that orange ribbon/connector assembly at the bottom of lcd is a very fragile part and if handled roughly during installation it could snap some ultra thin wires so signal to the leds gets through but no image.
i've done this before but I'm not an expert, maybe someone could tell if new lcd/digitizer in sony requires firmware changes? you won't do much in recovery but you can still flash something with flashtool which only requires you to see led status and one button. good luck.
Hi,
I have to following problem:
My HTC One M8 has colorful grainy static screen and sometimes the picture turns off, like a cable is loose. I read all the forums and search google all over for a solution, most of them claimed that after a panel replace it will be fine. I switched the whole front panel for a new one, but after assembly i have the same problem. The phone is working, because i can unlock the screen lock, turn off the phone, i get the notifications and everything, but the screen is just static noise. I'm assuming that maybe it is some graphic fault, but not related to the lcd panel or the cables (they are all brand new, and i double checked all of them). Is the logic board responsible for the image? What should i try to replace next the upper motherboard, or the middle logic board?
Shad
pic related
imgur . com/a/kjR6F
Oldai3912 said:
Hi,
I have to following problem:
My HTC One M8 has colorful grainy static screen and sometimes the picture turns off, like a cable is loose. I read all the forums and search google all over for a solution, most of them claimed that after a panel replace it will be fine. I switched the whole front panel for a new one, but after assembly i have the same problem. The phone is working, because i can unlock the screen lock, turn off the phone, i get the notifications and everything, but the screen is just static noise. I'm assuming that maybe it is some graphic fault, but not related to the lcd panel or the cables (they are all brand new, and i double checked all of them). Is the logic board responsible for the image? What should i try to replace next the upper motherboard, or the middle logic board?
Shad
pic related
imgur . com/a/kjR6F
Click to expand...
Click to collapse
I've got the exact same thing here.... Searched a lot around without finding anything that has resolved my case. I ordered a replacement screen for a cracked screen on the first phone, but when I tested the LCD before I assembled everything together it was showing just noise like in your picture. I assumed the LCD was bad, so I ordered a new one. But the new one was acting exactly the same.
Yesterday, I was approached by another one who needed help with their M8, and that phone needed to have its volume buttons replaced. So, I reused the parts from the old M8, but when I booted the phone after repair, it showed this same noisy screen as the first M8 I tried to repair. Anyone here that knows these phones and what is going on here? I'm pretty sure I have 3 working LCD's here now, and suspect something strange going on with the mainboard or controller for screen.
Anyone?
Hello,
three months ago the display of my OP3 stopped working, could see the leds flashing when starting up but nothing to see on the screen. So i tried with a broken display from a friends OP3 which was broken but fully working (touchscreen + display). Because everything was working fine with this display i bought an replacement screen from ebay.
First thing when i replaced the display was that with the new display the touchscreen gestures were gone. So i was not able to wake up the phone by douple tap or could start the torch/flashlight with gestures.
So i started searching on google and found out that this should be a problem of LCD as the original display is amoled and most (or all) of the replacement displays are "only" LCD. If that would have been the only problem i think i could arrange with it although i liked to use the gestures.
But sometimes i have the problem that after waking up the phone the touchscreen is not working. Then i have to urn off the screen again and wait some time. Sometimes 30 seconds, sometimes 1 or 2 minutes. This can be really annoying. Apart from that it seems that the touchscreen is working not as good as original one.
So i have a few question which should help me to decide, buying another replacement display, if that, hopefully found and amoled one. Or maybe there is another solution (like new flashing, but i don't believe in that solution really):
1. Is it really true that you can never use display gestures with an amoled display? Does this never works on LCD?
2. On aliexpress there are a few displays sold saying it is an amoled display but there is always said LCD in the title. Do you think that can be amoled or is that not true? If i would by another display it should bea an amoled.
3. Do you think it must be a hardware problem of the new display or it maybe help to put it apart again and there is just a simple connection error for example? Or do you thin it can be a software error?
Greetings and thank you for help
Maxi1984 said:
Hello,
three months ago the display of my OP3 stopped working, could see the leds flashing when starting up but nothing to see on the screen. So i tried with a broken display from a friends OP3 which was broken but fully working (touchscreen + display). Because everything was working fine with this display i bought an replacement screen from ebay.
First thing when i replaced the display was that with the new display the touchscreen gestures were gone. So i was not able to wake up the phone by douple tap or could start the torch/flashlight with gestures.
So i started searching on google and found out that this should be a problem of LCD as the original display is amoled and most (or all) of the replacement displays are "only" LCD. If that would have been the only problem i think i could arrange with it although i liked to use the gestures.
But sometimes i have the problem that after waking up the phone the touchscreen is not working. Then i have to urn off the screen again and wait some time. Sometimes 30 seconds, sometimes 1 or 2 minutes. This can be really annoying. Apart from that it seems that the touchscreen is working not as good as original one.
So i have a few question which should help me to decide, buying another replacement display, if that, hopefully found and amoled one. Or maybe there is another solution (like new flashing, but i don't believe in that solution really):
1. Is it really true that you can never use display gestures with an amoled display? Does this never works on LCD?
2. On aliexpress there are a few displays sold saying it is an amoled display but there is always said LCD in the title. Do you think that can be amoled or is that not true? If i would by another display it should bea an amoled.
3. Do you think it must be a hardware problem of the new display or it maybe help to put it apart again and there is just a simple connection error for example? Or do you thin it can be a software error?
Greetings and thank you for help
Click to expand...
Click to collapse
You can try two things. First flash an OOS ROM and see whether it resolves your issue (sometimes it does). Next, you can open up the phone and check the connections.
If both these fail, go for another screen which is comparatively costlier and from a reliable website rather than Aliexpress. The costlier ones usually do not have issues.