Question about LG KG800 Cellular Phone

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LG Shine screen display

Hi I have 2 shine phones 1 screen is very dark and just able to make out the display, the other stays dark but has a kind of backlight, i have replaced both screens, any suggestions please.Thanks

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  • stueto Aug 26, 2008

    Hi I have 2 shine phones 1 screen is very dark and just able to make out the display, the other stays dark but has a kind of backlight, i have replaced both screens, any suggestions please.Thanks-------------I thought the LRD's were built in the screen????

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Replaced the LCDS on the phone

Posted on Aug 23, 2008

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No video,screen is dark,there is audio


Hi doubles,
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason is the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. This is caused by faulty transistor, dried/leaky electrolytic capacitor, open fusible resistor.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but if this is busted resulting to black picture also.
Diagnosing the fault is technical and if you don't have necessary tools and test instrument and can't fix it yourself, I would advice you to look for an experienced technician to isolate the problem.
Hope I helped you.
Have a nice day!
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No light in a display


Hi,

Your phones backlight might have worn so you were not able to get the light as the background..

This defect can occur due to the following reason

1)Software corrupted
2)Light must have worrn out..

If it is the first case, i recommend you to flash your cell phone with the latest firmware and try with that..

If your cell phone is not getting ready even after reinstalling your firmware,i recomment changing the backlight ..

Please leave me comment,if you need further assistance

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Screen comes on then goes out in 5 seconds. The backlight goes dark but the seen is working, just can't see it. The backlight is out...


mark587, Did you shine a very bright flashlight 1" from the screen to try and see the WIN-desktop ?? Even though the screen appears BLACK. Your words above said: JUST CAN'T SEE IT Did you really NOT see anything? Have you seen any of the longer video clips of "LCD Monitor Disassembly" on YOUTUBE? Some BLACK screen "symptom" lcd displays can be repaired for less than $10 in parts. Capacitors! Also check videos on lcd repair. Then get back here to fixya and I or any of the guys can help you decide what to do with your display whoose screen is now dark and lifeless. After doing the YOUTUBE thing you may even tell us what you will do!!! Hope this was helpful. Yes we do want to hear back from you. please rate this response on fixya. I'm louie12fix on fixya or lmistyrel @ aol.com. Bye for now.

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1 Answer

Screen stays black when i turn it on. I get no picture at all


Hi,

There are a number reasons why this might happen:
  • The backlight has gone (Find a dark place and shine a torch into the screen and see if you can see an image in the background, if you see an image then the backlight has gone) - Needs a new backlight (Engineer to remove and fit) or have a new panel fitted.
  • The panel has died - Need a new panel
  • A cable has worked itself loose or is broken
  • The inverter has gone - Need new inverter
  • The driver board is faulty
Thanks

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Hi Friend,
As you have mentioned that you are not able to turn on,this may be due to the follow the reasons,

1.Kindly check the display,if there is a problem in the display you will face this kind of problems.So kindly change the display and check it out.

2.Try by doing a hard Reset as follows
a.Switch off the Mobile
b.Remove the simcard,battery and the memory card
c.Hold the Switch on/off button for 20 to 30 sec's
d.Now replace the sim card and the battery alone,switch on the mobile
e.After the mobile switches on now insert the memory card

Check and revert back

Thanks for using Fixya

Regards,
Ayyasam

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The backlight or inverter may be bad. With the monitor on and the room dark, hold a flashlight very close and shine it on the screen . If you can see the normal display the monitor is OK but the backlight or the inverter which provides proper voltage to the backlight has gone bad.

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1 Answer

I cant see anything because the screen stays black


Without knowing your model of phone it probably needs the firmware updating or, more likely, the backlight on the LCD screen is knackered. To test, turn on your phone in a dark room and shine a torch onto the screen. If you can see some of the screen then the bscklight has gone. Also try connecting the phone to your PC & updating the firmware.

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Geno

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Nx9010 screen very dark


Hi,

Based on your post/description that the laptop still works using an external monitor, then perhaps what is at fault is your laptop's display. Chances are that it is the CCFLamp (Cold Cathode Florescent) that provides that backlighting or even the inverter that powers it. In some extreme case, it is the LCD display screen itself that is at fault. You can verify that it is the CCFLamp/Inverter by shining a flashlight at the darkened screen while the unit is operating. Some semblance of your desktop would be visible albeit too dark to be of use.

If indeed you have verified that it is the screen backlight that is at fault, it is, from a technical point of view reasonable to repair. Your concern would be local availability of the replacement part, cost of shipping (if otherwise) and local qualified service personnel for the job.

In some areas/regions, cost of repair would not exceed 100USD if it is the CCFLamp and/or the inverter.

Hope that this be of some help/idea. pls post back how things turned up or should you need additional information.

Good luck and kind regards.

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