I have a HTC pure mobile.it's brightness is very low.some times it's brightness going high and low.my technician said that problem is voltage to display on main board.I have replace a new display.but problem is same.now we need circuit diagram for check lcd backlight voltage to fix it.
please can anyone give me a circuit diagram for htc pure or Touch Diamond2 or have a other idea to fix it?
its is big help for me to fix it.
I am waiting for answer ASAP.
Related
my G1 was destroyed in a crash, so I buy new plastics+keybord+slider (all plastic parts) to assemble the hardware in the new cover.
All is going well, but after the boot I notice that the touchscreen is unusable... if I touch the screen it begin to slide or press random points that I didn't touch, for some seconds...
The touchscreen is going crazy!!
I tried to open again the G1, reconnect the cables of screen/touchscreen and restart android.. but I have the same issue..
What the hell is happening?
The touchscreen panel seems ok, it doesn't have deep scratches, and it seems that the fall has not damaged visually the touchscreen.
It is a link problem or touchscreen, or what??? Someone know?
I don't know what to do.. buy a new touchscreen for 20€?? I spent 20€ for the plastic, if I don't solve I would change device.. but the qwerty device in europe are not so good
I'm waiting for milestone3, or a samsung/HTC qwerty device with dual core and screen> 3.7"
Please help I don't want to bury my G1
EDIT:
I found this video that show a similar issue on the motorola milestone.
It is really similar to my isssue..
http://www.youtube.com/watch?v=_PNuXREuDxA
I'm thinking that perhaps touching the back of the touch panel I spoiled something, or something like that (perhaps I have to clean the back of touch panel with somthing?)
I'm going to try something, all reply are appreciated.
I find solution (hope)
The problem is the bus cable of touchscreen that is damaged.
I bought a new cable, I hope to solve this problem.
Sorry for this useless thread
Hello, I have HTC Sensation XL and it fall to water but after it dry there is no backlight, I change the lcd but there still no backlight, someone knows where is the IC Backlight on the motherboard?
Thank you
enamorado1 said:
Hello, I have HTC Sensation XL and it fall to water but after it dry there is no backlight, I change the lcd but there still no backlight, someone knows where is the IC Backlight on the motherboard?
Thank you
Click to expand...
Click to collapse
there is a TPS 65200 IC on the board
it's located on the same side of the lcd connector, under the shilding,
if you look at the board with the battery connector towards the top, you can see on the right the si reader, in the middle the samsung memory chip,
on the left of the memory chip - you see a coil that says 100 on it, that's the backlight coil, and right next to it, to the left is the backlight IC.
i would start with the coil before trying to reball the IC.
thank you
SergioHeadAche said:
there is a TPS 65200 IC on the board
it's located on the same side of the lcd connector, under the shilding,
if you look at the board with the battery connector towards the top, you can see on the right the si reader, in the middle the samsung memory chip,
on the left of the memory chip - you see a coil that says 100 on it, that's the backlight coil, and right next to it, to the left is the backlight IC.
i would start with the coil before trying to reball the IC.
Click to expand...
Click to collapse
Anyone can mark picture of coil and the ic that i shoud change? Thanks a lot
enamorado1 said:
Anyone can mark picture of coil and the ic that i shoud change? Thanks a lot
Click to expand...
Click to collapse
Hi,
Same problem here.
In the green zone, the "coil" but as you can see in the red zone there is a kind of glue or something that melted. Do you have the same thing?
How can I replace the "coil" then ?!!
anyone know where to get the LCD connector on the motherboard from a Sprint HTC One?
as the picture shows, I've got a broken one that needs replacing.
It's 31 pins. The closing lever is on the back behind the slot to insert the LCD ribbon (white lever in picture). I think it's called an FPC or FFC connector. But I don't know the pitch.
thanks.
While I realize this post is some two years old, it came up pretty high on google search results, so I'm going to answer for the sake of anyone else that has this question and finds this post.
Code:
http://www.parts4repair.com/lcd-screen-fpc-connector-for-htc-one/
this appears to be exactly what you're looking for, but it looks to be a daunting task to replace.
Good Day to All,
I have a problem with my Z3+ E6553, the problem is that there is no display on the phone. Couple of weeks ago the lcd just stopped working, the device does come on with the LED lights, vibration and the touch is reponsive with which you can here the touch sounds, haptic feedback and the Speech to text speaking. I thought the LCD screen went dead and so I bought a new LCD screen to replace it but after replacing the screen the problem still presist with no display(black screen). So currently I have no idea what is the cause or what to do next.
I opended the phone was just check some things out, and I had a look at the LCD flex cable and I found something strange that maybe one of the connector antenna prongs missing. But I'm not sure if thats just how it is or its maybe it got damaged. Have a look at the attached pictures below.
Can someone tell me if this issue is with the LCD motherboard flex cable, or another hardware issue maybe being the motherbaord?
Hello Dear Fellows,
Before few days my HTC One X9 dropped and screen got damaged so I ordered Touch Screen Digitizer + LCD Display Assembly for HTC One X9 OEM and replacement done local service technician so now display is good but problem in touch screen/tapping issue sometimes typing is not good please let me know it's solution why it's behaving like this as it seems fitting is good but still facing typing problem.
any idea what's the issue and how to solve it?
Thanks in advanced.