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D750i screen white blank after new screen |
scott_reece
Joined: Aug 01, 2006
Posts: 8
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Just installed new screen after cracked old one. Phone seems to work fine apart from screen being bright white. Sounds ok but just can see anything.
Does this sound like I have done a bit more damage than just the screen?
Cant have been me fitting the new LCD - that was easy.
Any ideas?
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Sammy_boy
Joined: Mar 31, 2004
Posts: > 500
From: Staffordshire, United Kingdom
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I know it sounds a bit of a silly question, but did you push to screen connector into the motherboard fully, and make sure it was still in OK when you started putting the phone back together? Also, were there any slight tears or nicks in the ribbon at the bottom of the screen anywhere?
Could be a problem with the connector on the phone mainboard itself, has the phone been in contact with moisture at all - even if just used briefly in the rain, in the bathroom during a bath/shower, etc.?
"All it takes for evil to flourish is for good men to do nothing" - Edmund Burke
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scott_reece
Joined: Aug 01, 2006
Posts: 8
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Hi there.
Yea, That was the first thing I thought as well. I actually stripped it all down again. Un clipped it all. Then put all back together again and still white. Can hear phone still working ok.
No visable rip or tears in ribbons. To be fair I was really carefull doing the LCD change as I have read tht the ribbons are really touchie. All I can think is that when the screen got hit, it may have done more damage than just the screen? |
Sammy_boy
Joined: Mar 31, 2004
Posts: > 500
From: Staffordshire, United Kingdom
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Have a close look at the phone mainboard contact, see if there's any sign of damage to the contacts, you'll probably need something like a good magnifying glass though.
The other possibility is a software problem, though if the damage happened with a bang to the phone I'd imagine it's more likely to be hardware causing the trouble.
The other option is of course that you've got a duff screen, might be worth contacting whoever you got it from about it, perhaps try swapping the screen.
"All it takes for evil to flourish is for good men to do nothing" - Edmund Burke
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tranced
Joined: Jan 19, 2006
Posts: > 500
From: Santo Domingo, wonDeRland
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Maybe u got a bad screen or isnt well connected to the board. Have u tried it on another phone?
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scott_reece
Joined: Aug 01, 2006
Posts: 8
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Is it worth me trying to flash the software? - mind you, i cant do that with the usb cable that came with it can I?
Gutted if this nw screen is duff. Weird thing is it is bright and all pixels light fine, just no pic |
gregface
Joined: Mar 05, 2004
Posts: > 500
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One of the things that is most important when dismantling phones is to wear gloves. The sweat and dirt on your hands getting on the LCD ribbon will be enough to stop it working altogether, especially if you are nervous about it. However if you open the phone up again wityh gloves and wipe the contacts gently with a lint free cloth then you should be able to rectify this problem.
Ofcourse as Sammy_boy said, It could well be a dodgy screen.
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michka
Joined: May 17, 2004
Posts: > 500
From: Brussels-Belgium
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Quote:
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On 2006-08-14 17:21:52, scott_reece wrote:
Is it worth me trying to flash the software? - mind you, i cant do that with the usb cable that came with it can I?
Gutted if this nw screen is duff. Weird thing is it is bright and all pixels light fine, just no pic
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Pixels of an LCD don't light. Pixels are either transparent or opaque. The light you see comes from the backlighting behind the screen. And non working LCD's are usually transparent, so the light comes through and you get a totally white screen.
So, what you see is that the backlight lamp works OK, but the LCD itself does not.
As for why it does not, I am clueless. Maybe when you crashed the screen, some sort of short circuit happened that killed the driving chip.
Pedestrian: don't run, my car is faster anyway. |
scott_reece
Joined: Aug 01, 2006
Posts: 8
PM |
mmm, will try the gloves thing, although i didnt come in contact at any time with the ends of any ribbon. Will do tonight and let you know how it goes,
Did any one know if it was poss to flash with out me having to go and buy cables. No other master reset i could try?
Cheers |
gregface
Joined: Mar 05, 2004
Posts: > 500
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if the phone vibrates when it is turned on then it means that it is not a software problem so flashing it will not fix it im afraid.
flashing the phone only fixes white screen of death when it is hanging before the phone boots. |
scott_reece
Joined: Aug 01, 2006
Posts: 8
PM |
yea, all vibs ok when turning on. Think it points to the D750i graveyard in the sky. Will try tonight and let you know.
Thanks for all you guys help so far
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scott_reece
Joined: Aug 01, 2006
Posts: 8
PM |
Hi guys - fraid no go with last night. Checked all connections and used gloves, cleaned every teminal... any other ideas?
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Posted: 2006-08-14 16:46
jay0726 | 
