Develop Bugs

[Q] LCD failure?? need help

Hi there,
for the past 2 days the screen on my evo will at random change colors to pink, purple, green, blue and if i press on the back of the phone it will change back to normal. basically If i put any pressure on the phone what so ever the screen will change to a different color. Does this sound like the LCD is failing?
I put a brand new LCD + Digitizer on it about 6 months ago as i bought the phone with a busted LCD.
edit* also i wanted to add that i just opened the phone up to inspect the ribbons and i do not see any kind of damage what so ever. and the motherboard is also only 6 months old as i replaced that due to the previous owner melting the board with a soldering iron.

Does this sound like the LCD is failing?
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No, actually it sounds like it could be the lcd cable itself is loose. The only way to tell is to open it up, unplug the ribbon and plug it back in securely. If that fixes it, then it was the cable, if it doesnt, then its the lcd itself.

Thanks for the reply! I'll open the phone up again tonight and play with it and see what happens.
Sent from my PC36100 using XDA App

So I installed a brand new LCD + Digitizer and it seemed to be working for the first few moments and then went back to doing its weird color changing.
Even with the new screen if I squeeze on the phone or apply a gentle twisting motion to the phone I can eventually get the color looking normal, but once the pressure is off the phone the color goes back to being a dark pink / redish color. Also I do notice a new symptom, the 4 touch buttons at the bottom of the screen do not light up with this new digitizer.
What are the chances that the new lcd is junk? Or could this be a more serious issue like the logic board being damaged? Are their any methods that I can take to ruling out the board? I payed 259$ for a brand new board 6 months ago and if its bad this POS is retiring its life!
Sent from my PC36100 using XDA App

LCD replacement

Ok so I dropped my phone had to replace digitizer and LCD everything went smooth until I turned it on and the LCD is very dark has a greenish tint and is washed out colors from bottom to top top being the darkest so I called the shop I got the LCD from they sent me a new one and installed it and same problem so I took my wife's phone apart and tested both new lcds and they looked the same being dark with greenish tint so I am wanting to know could my phone be messing up the lcds or did he just send me 2 bad ones and I should find a new supplier I don't want to test my wife's LCD in my phone on the off chance my phone could be messing up the lcds what do y'all think any advice would help
Sent from my Incredible 2 using XDA App

plh233391 said:
Ok so I dropped my phone had to replace digitizer and LCD everything went smooth until I turned it on and the LCD is very dark has a greenish tint and is washed out colors from bottom to top top being the darkest so I called the shop I got the LCD from they sent me a new one and installed it and same problem so I took my wife's phone apart and tested both new lcds and they looked the same being dark with greenish tint so I am wanting to know could my phone be messing up the lcds or did he just send me 2 bad ones and I should find a new supplier I don't want to test my wife's LCD in my phone on the off chance my phone could be messing up the lcds what do y'all think any advice would help
Sent from my Incredible 2 using XDA App
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It sounds like they are sending you the parts for another phone.
You are right about being cautious with your wife's phone.
Can you call the shop you bought both of the screens from and verify the type of phone that they are sending the part for?
You may have 2 perfectly good screens for a Inc S.
OR, but highly uncommon that your video card has crashed in a way that it could be corrupting every screen that you throw at it.
I don't think there is any way that the screen can be damaged by the phone in a way that is causing BOTH screens to fail.
But just to be safe, I would wait for advice from someone with more experience on the matter..
That or see what the shop says.
When you heated up the unit could you have melted any solder connections around the components?
That should be lead free solder with a higher melting point than regular solder.
Good luck..

Thanks for your response and when I heated it up the logic board was already out of the phone so no heat was applied to it but I will call the shop I didn't think about it being and incredible s screen I wonder if that would make a difference although their website says the screen os for the s and 2 but again thinks for your response
Sent from my Incredible 2 using XDA App

Thanks aging I just got a new LCD in from another supplier and it works perfect so the other ones were just bad lcds
Sent from my Incredible 2 using XDA App

plh233391 said:
Thanks aging I just got a new LCD in from another supplier and it works perfect so the other ones were just bad lcds
Sent from my Incredible 2 using XDA App
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What suppliers was it? If you don't mind me asking
Sent from my Incredible 2 using XDA App

The good one came from
Wholesalegadgetparts.com
Sent from my Incredible 2 using XDA App

How much would this be?

Thinking of fixing my evo but not sure how much it would cost. I've never looked at this stuff so idk what's needed. Any gurus that have repaired their evos many times wanna chime in? Cracked screen and it has some purple stuff almost all over the screen
Sent from my SPH-L710 using xda app-developers app

Looks pretty rough.
When the touchscreen goes out its the digitizer.
When purple stuff like that appears its the LCD screen.
If the LCD screen is shot 99% of the time the digitizer is shot too since it sits over the LCD screen.
What I would do is buy a complete LCD, digitizer, disassembly screwdriver kit off eBay or Amazon. They go for around 30 bucks.
Here is a good XDA tutorial
xda-developers.com/showthread.php?t=1567693
Here is a good video
https://www.youtube.com/watch?v=vFK57yFmqpk&feature=youtube_gdata_player
Good luck and thanks for the new port.

Isn't there 2 different types of screen? Like the older Hw evos used a different screen
Sent from my SPH-L710 using xda app-developers app

I believe there is 3 manufacturers but 2 different kinds of ribbon connectors.
The last post of this thread has a good tip for determining which LCD you have without taking apart the phone.
http://androidforums.com/evo-4g-tip...an-u-tell-lcd-you-have-sprint-htc-evo-4g.html

light leakage

hi guy! i had this problem with my phone. it functioning well, but this light leakage thing keep bugging me. what i want to ask was that to fix the light leakage do i need to replace the lcd or only the digitizer i'm not really good at hardware so please help me out thank out. and here the picture of the problem sorry for the bad english

Pretty sure that's an issue with the LCD itself. Was the actual front LCD and digitizer ever changed out because of a crack or something. Could have been replaced with a cheap replacement
Sent from my LG-E980 using xda app-developers app

Use Nova/Apex launcher and set the top and bottom shadow in the desktop settings area. Might reduce it a bit with brighter coloured backgrounds

chdrummerdude said:
Pretty sure that's an issue with the LCD itself. Was the actual front LCD and digitizer ever changed out because of a crack or something. Could have been replaced with a cheap replacement
Sent from my LG-E980 using xda app-developers app
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So if i want to get rid of the leakage i have to replace the whole front panel. Is it the one where u can find on ebay for around 35-40buck? Thx u for ur answer

Screen not showing image

I've recently ran into an issue where the screen on my dz does not show anything on it. The phone works and responds to touch however it does not show anything on the screen apart from a couple of white lined down the right side. Would this be a screen fault or a connector fault with the ribbon?
|Sent from the bowels of my crypt|

It could be either the main flex cable or the LCD, unfortunately there isn't a good way of testing other than replacing pieces to see what cause this. In truth your situation seems to be 50/50 caused by main flex or LCD, but I still am leaning toward replacing the LCD if you don't want to buy both
Sent from my Nexus 7 using XDA Premium 4 mobile app