Flex related question - 8125, K-JAM, P4300, MDA Vario General

Hi, my wizard is in an annoying state right now. You have to press the t-mobile logo on top of the dpad in order for the touch screen to work. The left softkey, internet explorer and comm manager buttons don't always work. This is true whether the keyboard is slid out or not. Sometimes the screen also turns white whenever you press reset. It all started when a bit of water got into the wizard.
According to a repair shop here, I need to replace the flex cable and something in the lcd. So do you think this would end my wizard troubles? I'm considering replacing this phone with another similar type like the tytn and tytn2 since the guys are charging me 104 dollars for the flex cable and repair. However, I could get a flex cable from ebay for 24 dollars. So buy a new phone or go get the flex?

Related

T-Mobile MDA start on a white screen??

I need help...
My T-Mobile MDA can power up but it will just stay on a white screen & after awhile, the backlight time-out & swtiches off.
Tapping the screen or the power button will bring it back on.
All the buttons seem to be responding & the system sound comes on when I press some buttons.
What might be wrong?
Several soft reset will not bring me to the standard screen.
Is it a hardware issue or software issue?
Please advice me what I should do to recover from this situation.
Thanks!
konker
Update:
I finally performed a clean reset & the standard WM5 "tring" sound came on.
At least, the system board is working fine.
But nothing appeared on the screen except for the greyish-white background.
I also brought the MDA into the bootloader mode but I don't see the Tri-colour screen.
What should I do next?
I noticed from the MDA Service Manual that there's a flex board for connecting the screen/front panel buttons to the system board.
Could that be cause of my problem? Or is it the LCD screen giving me problem?
Please, anyone who has experience with this issue, I appreciate any help I can get.
TIA!!
Is your MDA out of warranty? Do you have insurance? If no and I were you I would probably take it apart and check for a loose or bad connection. You got the service manual you should be good to go.
bendog2784 said:
Is your MDA out of warranty? Do you have insurance? If no and I were you I would probably take it apart and check for a loose or bad connection. You got the service manual you should be good to go.
Click to expand...
Click to collapse
bendog2784,
My MDA has no more warranty nor insurance.
I took the plunge & disassembled it.
I made sure all connections are clean & tight before reassembling the unit.
The screen still stayed greyish-white.
This morning, I screen suddenly turned on but for a brief moment.
It seems that when I slide out the screen (or slide out the keyboard), half way through when 2/3 of the k/b is exposed, the screen looks just as it should.
Beyond that it will blank out, kinda like a device having been put to hard reset from an operational state...except that the backlight stays on & then greyish lines start to appear.
So now, I'm not sure if it's the screen that's causing problem or the flex cable.
The flex cables are very hard to find where I'm & very costly too, judging from eBay auction listed.
Would appreciate any help to revive the screen of my MDA.
Thanks!
konker
I got a Replacement LCD for my MDA for $39 at WWW.HTCLCD.COM
belize2004 said:
I got a Replacement LCD for my MDA for $39 at WWW.HTCLCD.COM
Click to expand...
Click to collapse
What happened to your LCD that prompted you to replace it?
Did it crack?
If mine was cracked & there were fragmented display showing through, I would have gotten a replacement LCD with no questions asked.
However, in my case, the LCD is not showing anything other than a greyish white shade no matter what I do to the hardware.
I'm not sure it is a LCD problem as I mentioned above that yesterday, I got it to work for a short period of time at a certain position.
That said, I can get a replacement LCD for my MDA for less than US$25 here.
If it is an intermittent problem (as you described) I'd check the flex cable again.
try to reseat the connector that goes to the LCD (the large one that is locked in place with orange tape and the little brown clip on the connector itself).
help
hi im having the same probs with my vario, have you havd any luck sorting this out?
chrisakak9

Help! My Repair Made Phone Worse!

Hi all, I was going to sell my HTC touch HD to a mate of mine and due to many scratches on the casing I purchased a new case & chassis. After following a guide on the internet, as I removed the screen I caught a small ribbon cable believed to be the light and pulled it slightly out of the clip. We replaced it and put the phone back together and it looks like we have broken the screen as you turn it on the phone vibrates but we get a small white blob near the end call button. It also appears the phone no longer charges although the amber light appears and you can turn the phone on. I think the phone was working because if you press the buttons the phone vibrates, but now nothing happens. Is my best bet to sell the phone as it is or shall I buy a new screen and attempt another repair? its £38 for a new one and I dont want to waste any more money.
Use a program like MyMobiler to check on your desktop pc that your device is working, and that you are sure the screen is faulty. If you really have broken it then a replacement is your only option.
http://www.mtux.com/
cheers thats a great idea.
Does anyone know about why I may be getting the charging problem? Is it because the ribbon inside the phone might not be earthed 100% as I removed the tape holding it down

Screen replacement problems

So my g/f droped my phone and my touch screen completly stoped working. So I went on a limb and replaced the digitizer and I thought all was well. Unforunatley only parts of the screen if you were to break the screen into 1/4s the top quarter doesnt work nor does the third down. So im thinking either the digitizer i recieved is defective or the ribon cable on the phone side is damaged. I have tried to reconnect everything all seems well.I have also tried a hard reset to no avail Any ideas guys could use some help!
Does anyone have a breakdown of the phone with part numbers and names. Im going to try and get the ribbon cable that connects the digitizer to the phone the one that runs under the power button.
xxiamdrewxx said:
Does anyone have a breakdown of the phone with part numbers and names. Im going to try and get the ribbon cable that connects the digitizer to the phone the one that runs under the power button.
Click to expand...
Click to collapse
Unless you really know what you're doing, this will be impossible. The screen and that ribbon are connected. Best bet is to just replace the entire digitizer again. Or do like I did, warranty it out. My screen shattered, door met phone, and I replaced it but had a dead spot, so I just called att and had them replace under warranty.
never mind found it the ribbon cable is one big piece for all connections! 15 bucks.

Screen went black while texting

I was tapping out a text when all of a sudden the screen went black. the capacitive buttons still light up, but absolutely nothing from the display..
I'm kind of at a loss for what could have happened. the flex cable looks good and where it should be and doesn't appear to be loose...
Oh, and the digitizer still works because I can go through the motions of the lock screen and the phone vibrates.
open it up and make sure the connections on the flex are good, might need new flex cable and/or lcd
I tried to file a claim through Asurion and they said it wasn't covered! Kind of baffled at that. So I went in to my local Tmo store... renewed my contract, but made my bill $10 cheaper a month, and they were able to do a warranty replacement and I'm getting a MyTouch 4G Slide
Same thing just happened to me, I left the keyboard open for 10 minutes and when I came back it had a black screen (not off just black) can't get it to work. Im gonna try to take it apart and reconnect the flex cable. Ill let you know if it works.
G2 Black Screen
Hey, did anybody find a solution to this? I bought this T -Mobile G2 used so I have no type of warranty. The screen stays dark, but vibrations, ring tone, and the lights behind the"home& menu screen at the bottom work. I replaced the screen/digitizer but this did not fix it. still the same. what else might be wrong?
---------- Post added at 03:02 AM ---------- Previous post was at 02:06 AM ----------
okay well I just found out that LCD screen replacement part and screen digitizer part are different. so I have purchased LCD screen. Will update whether or not this works as it seems through my internet searching many people have had this prob with the G2.
I have the same problem, black screen, touchscreen works because I can feel the feedback when I unlock. I've also done lcd replacement. That didn't help either. The only way I can get the phone to wake up is by squeezing the top left corner in the area by the proximity sensor, and the power button at same time. Doing that it takes me like 10 tries to get it to wake.
well you probably either didnt get a good connection at one of the cable points when you replaced the lcd (open it back up and check this) or you need to replace the entire flex cable
This happened to my sister's Desire Z (except she dropped it). Screen was black but phone was working. I reseated the LCD flex cables but that didn't fix the problem so I replaced the LCD module thinking it was dead. The screen was still black so out of desperation and anger I gave it a hard smack and it started working. It has been working for three months now. Go figure
Original LCD was probably good and the issue was probably due to a faulty flex cable, however on the DZ these cables are pretty complex and expensive (costs more that the LCD module)

[Q] Need help troubleshooting touch issue; related to hardware replacements

Hello, I recently attempted to replace the USB flex cable on my D800, because the original touch screen turned on, but the touch was inaccurate and had dead zones. I would touch one place on the lock screen, but the circle would appear in a different area instead. (The top half of the screen was pretty accurate, but lost accuracy from the middle and down.)
So, I ordered another flex cable for the D800, same as the original (labeling and everything). However, the new flex cable wouldn't register any touches at all. The display would turn on, but no touch. So I reinstalled the old flex cable and the touch worked, just not correctly. Faulty new cable?
Anyway, at that point I thought, hey, maybe it's the digitizer, so I got a new LCD+Digitizer assembly for $44. I installed it and it turns on fine, but still has touch issues with the original flex cable, and no touch on the new flex cable.
So... does this just mean that both of my flex cables are faulty? Or is it something else? Because it's definitely not the digitizer.
Extra info:
1. I factory reset the phone several times but no improvement, so I don't think it's a software issue.
2. I bought the phone second hand for $80; needed a battery replacement, because the screen wouldn't turn on and had a blinking red light.
3. Oddly enough, the battery that was inside it when I bought the phone was manufactured in 2014, even though the phone itself was used and fairly old, so I assume the original owner had opened it once before.
4. Looking at all the parts inside the phone, they're clearly labeled as D800/801. However, I managed to get through the settings to hardware info and it says the model is LG-D802T (Australian model?). I don't know what's going on.... ugh
same problem ... with no fix yet

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