I have ab s4 i9505 laying around with broken screen and as i don't need it as phone I have an crazy idea to pickup an 7" display (thinking about tab 3) as they are pretty cheap and attach it to phone for use as an in car head unit. I am wondering if someone did anything similar or have any idea if this will work. I have no idea if connectors are same even, there could be other problems also but I would like to build this Frankenstein
I own a tab 3 and my son owns the 9505.
Both need screen replacements, so it is safe to say I have researched both screens.
The S4 has a sealed unit, single part lcd panel and digitizer that requires a single connection to the motherboard.
The tab 3 has separate lcd panel and digitizer, both of which need to be connected to the motherboard via their own dedicated flex cables. So (catagorically) yes, the connectors are different, and no, there is absolutely no cross compatibility. Even if they were the same, I have a feeling that DPI would be an issue.
The S4 has a better/higher resolution screen than the Tab 3, so a hypothetical 'swap out' of screens would (even if it was possible) cause widespread system instability at best......
Related
Hi!
Is it possible, through a software update, change the lcd gen? When I broke my Wizards lcd i took the lcd from my old Magician. They didn't have the same ribbon cable The lcd now works, but all colors are inverted or corrupted.
If not, is there a hardware change (except bying the correct lcd) that solves the problem? I'm used to soldering, so that shouldn't be a problem, however I'm not interested in moving any BGA circuits between the units.
Thanks!
pklarsjo said:
Hi!
Is it possible, through a software update, change the lcd gen? When I broke my Wizards lcd i took the lcd from my old Magician. They didn't have the same ribbon cable The lcd now works, but all colors are inverted or corrupted.
If not, is there a hardware change (except bying the correct lcd) that solves the problem? I'm used to soldering, so that shouldn't be a problem, however I'm not interested in moving any BGA circuits between the units.
Thanks!
Click to expand...
Click to collapse
It sounds to me like you might be s**t's creek with out a paddle on this one... I would reccomend just going on ebay and buying a new lcd and digitizer. If you are as good as you say you are, installing it should not be a problem but from the sounds like the 2 different screens are not compatible at all due to the different ribbon cables.
I would say you have 2 options.
1. Deal with the messed up and inverted colors.
2. Buy a new lcd and digitizer.
Now comes the hard part... Deciding...
Hey guys,
I have a problem. A week ago I dropped my hd2 and the screen was smashed. I took it to the service and they replaced the digitizer. Now, as it turned out the lcd displays badly and the say it has to also be replaced. I know that after the drop the lcd worked fine. Now it looks like this: http://img857.imageshack.us/i/imag0001u.jpg
My question is - is this broken lcd? it has to be removed? or can I do something with it? is it the fault and they've done something wrong?
Thanks for answers.
Read this post by XDA member Facdemol, this post will help you answer your question.
emjakmaciej said:
Hey guys,
I have a problem. A week ago I dropped my hd2 and the screen was smashed. I took it to the service and they replaced the digitizer. Now, as it turned out the lcd displays badly and the say it has to also be replaced. I know that after the drop the lcd worked fine. Now it looks like this: http://img857.imageshack.us/i/imag0001u.jpg
My question is - is this broken lcd? it has to be removed? or can I do something with it? is it the fault and they've done something wrong?
Thanks for answers.
Click to expand...
Click to collapse
Unless they just haven't connected the LCD properly (very unlikely), there's definitely a problem with it... I'm afraid I think it'll have to be replaced.
in turkey if there is a digitizer problem they change the whole screen.
Under the TMOUS warranty they will replace your phone if an issue comes up like that because it's usually just an unlucky roll of the dice if your LCD does that.
because your problem seems to occur after a mechanical shock, i would suspect 2 scenarios.
1. You have a bad connection between the display flex connector and phone's motherboad. This can either be caused by motherboard display connector failure, some small pins on that connector got busted when the phone was either dropped or once the digitizer was changed. I give pretty small chances for this to have happened.
2. If you see a phone lcd stripped down of it's housing, you will notice that on the bottom part of it (or lateral one on some displays) you can see a flex cable coming from the display's glass-like surface to the back of it. It sits pretty tight around one edge of the screen. It connects the TFT matrix to the processing part (column&row controllers) on the back of the display (or on the flex cable/phone motherboard .. ). If a phone is hit from one side, the case and display housing can press hard on this flex cable and break it, or puncture it. In this case, some of the signals needed to drive some specific areas of the tft matrix aren't getting to the matrix itself so you see some lines on the screen (plus color rendering errors). Sometimes, improper manipulation of the screen when assembling back the phone can also cause the problem.
I give more chances to this scenario.
If number 1 could be fixed by a simple phone disassemble and connector checking, number 2 will indeed require a new display as there isn't any way to service that broken flex cable.
My previous posts about display problems tried to focus on "naturally occurring" problems, not ones induced by electric/mechanical shocks. So in this case, my above scenarios will be more suited as likely suspects for your problem.
Hello everyone, my hd2 after a fall the screen has turned white but the phone seems to work because 'receives calls.
I tried to put it into bootloader but it always remains white.
With the replacement of Dispay you think I can solve the problem?
Thanks to all
the white screen usually means that the ..screen is not working at all. What you see are the led's that make up the backlight. The LCD panel is not polarizing this light in any way. This is because either the motherboard doesn't supply the proper signals or the display unit (LCM) is not able to process them.
Both this scenarios can happen when you drop the phone. Simply put, you may change the display and still have this problem (if it is motherboard related). At motherboard level, since the qualcomm snapdragon chip is the one that also does video processing, a failure in displaying something on the screen could mean that the chip itself either got damaged or some of it's soldering points to the PCB were broken. This is a end-game scenario.
What you really need to do, is to check out the board with another display in either a service center or whatever place you can borrow one before you actually buy it.
Thank you for your answer, but try a screen before you replace it is impossible for me, I'm forced to buy it, ****!
It would be a risk to heat the solder joints with a micro gas lamp as for the chipset of some laptops?
Or is there another system?
Thank you
Orx
Sell your phone and by a new use one... by the time you figure out what's wrong, you put in just as much as it would be to by a new use one
Sent from my HTC HD2 using XDA App
solved
before selling the cell I had to understand the problem!
I solved the problem, was the logic board connector did not close the flat cable of the display. All this caused by bad positioning of the protective mylar
Thanks to all
Greetings fellow note enthusiasts. I have a N910T that I'm trying to replace the glass/ digitizer on and currently not successful. I bought a used unit off ebay that was previously on a N910F. The glass digital was still on the N910F frame so I just swapped everything from my own unit over in hopes it would work. In my mind the only difference between part compatability would lay in the modem chip set for the cellular band communication. However I'm not looking sure where those are located. Long story short, after assembly the phone doesn't boot up. It was functional last time it was put away and now it's not. Am I going to have to separate the glass/ digi from the N910F frame and over to mine? I thought the problem could lie in the secondary board at the bottom of the phone that has the micro USB and nav buttons.
I have a screen assembly for a SM-N900, and I've already been forced to accept a return for the thing by paypal once from someone who didn't read my listing at all and bought it to try and fit in a N9005.
I'm wary of re-listing it as it is, because it seems even going into detail about exactly what happens when you try to put a N9005 board in it is not enough to stop paypal from finding it as "not as described".
sorry for the irrelevant rant, but I'm still annoyed about it.
anyway, I'm thinking that I will wait until I find a suitable parts not working phone with a smashed screen and create one fully working phone which I can sell, and I'm wondering if anybody knows if any boards other than the SM-N900 will fit in the metal frame of this assembly.
I know the screen works fine with other models, as I've tested it with a N9005 motherboard, all the connectors work the same, and it responds to touch and stylus input normally. the problem is that the metal chassis that the screen is attached to is cut to a slightly different shape, so when you put a N9005 board in it, you can't screw the phone back together properly.