Question about Sony Ericsson K850i Mobile Phone

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Screen backlight goes out when i press the keypads

The screen backlight goes out when i press the keypads, specially keys 1,4,5,7,8, and the dpad left and down.. why is this so??

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Water damage

Posted on Jul 01, 2009

  • tcm-151 Jul 01, 2009

    water damage

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Posted on Jan 02, 2017

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Phone is locked. How do I unlock it?


With front of phone facing you. On the left side of the phone you will see two grey slim inline buttons, and or, keys. The top button, and or, first key is the UP/DOWN VOLUME key. The bottom button, and or, second key is the LOCK key.

(1) To UNLOCK the phone. GOTO the LOCK key. PRESS and HOLD until you see the screen read out display "KEYPAD UNLOCKED". You are now done.

(2) To RE-LOCK the phone. GOTO the LOCK key. PRESS and HOLD until you see the screen read out display "KEYPAD LOCKED". You are now done.

In Addition:

(3) To set AUTO-LOCK on the phone.

GOTO the MENU key. Located on the top left of the keypad on the front of the phone. The LARGE WHITE HORIZONTAL BAR directly under the word MENU on the screen readout. PRESS-IT ONCE. You now SEE the PREPAID ICON.

Next, locate the OK key, top center on the keypad. Directly below the middle of the screen readout.

Next, locate the UP-ARROW key directly above the OK key. By using the OK key PRESS-IT ONCE. Now you see the SETTINGS ICON.

Next, by using the OK key, PRESS-IT ONCE. Now you are in SETTINGS.

Next, locate the DOWN-ARROW key. Located directly below the OK key. PRESS-IT ONCE. PHONE SETTINGS should now be highlighted for you.

Next, by using the OK key, PRESS-IT ONCE. You are now in PHONE SETTINGS.

Next, GOTO the UP-ARROW, PRESS-IT ONCE. AUTO KEYPAD LOCK should now be highlighted for you.

Next, by using the OK key...(or...by using the WHITE HORIZONTAL BAR key, located directly below the OK on the screen read out). PRESS-IT ONCE. You are now in AUTO KEYPAD LOCK settings.

Next, by using the UP or DOWN ARROWS, GOTO the amount of minutes that you would like to set your phone to auto lock for.

Next, GOTO the OK key...(or...by using the WHITE HORIZONTAL BAR key, located directly below the screen read out). PRESS-IT ONCE. Your screen read out will now display, "DONE"

Your phone is now set to AUTO-LOCK when your phone has been at rest for the amount of minutes that you have selected.

If you would like your phone to lock sooner in order to place it in case, pocket, or purse. Simply refer to (2).

Jan 31, 2014 | Alcatel Tracfone A382 BIG EASY No-Contract...

Tip

All nokia secret codes


Tips / undocumented functions: 
- At the top of the main-menu and every folder, the keys 1 to 9 are shortcuts to the icons 1-9 

- A shortcut on the left menukey in standby-mode will take more time to open than a shortcut on the right menukey. Reason: The left key is also used for the keylock so it shortly waits for pressing the * button. 

- While writing text press and hold "#" to switch between Alpha mode and Number mode. You can also press a key long to insert its number. 

- In standby-mode, press and hold 0 to launch your wap home page. 

- If you have your keylock activated just press the on/off button to turn on your backlight to look at the time when it's dark without having to unlock the keypad. 

- To keep the backlight on, run Torch (freeware), press and hold the Menu button and go somewhere else on the phone. 

- To check your current firmware version simply type *#0000# in standby screen. 

- To check your IMEI (International Mobile Equipment Identity) type *#06# in standby screen. 

- To check your Bluetooth device address type *#2820# in standby screen. 

- Start up in Safe Mode (no 'auto start' apps will be running): Hold down the pencil key when you turn on the phone and hold it on until you have to enter your PIN code. 

- Format the phone memory by typing *#7370# in standby screen. 

- In standby mode, 
45# + <talk> dials the number on your sim in memory slot 45. 
50# + <talk> dials slot 50 and so on

on May 12, 2010 | Cell Phones

1 Answer

On my asus Eee Pc 1201HAB the display shifted to the left so the left side is partially cut off, how do i fix it?


1) Looking at the User Manual right now, and do not see a Hot Key on the Keyboard, that shifts the display.

[ Hot Key is also known as Special Key. The F1 through F12 keys at the top of the keyboard, and also for your model, colored keys on the keyboard ]

It could be the Screen Resolution is messed up. Not set at the correct settings.

Right-click on an empty area of your desktop screen.
At the bottom of the drop down list, click on Properties.

In the Display Properties window click on the Settings tab.

The screen pixel resolution should be set at 1366 X 768,

http://www.screentekinc.com/Asus_EEE_PC_1201HAB--12.1-inch--1366x768-wxga_hd-laptop-lcd-screen.shtml

In the middle of the Display Properties window, you see the blue subheading - Screen resolution

Right under this small subheading is a Slider.
The Pointed 'arrow' with the green tip, and top, slides back, and forth on the 'line'.

It should state 1366 X 768.
If it does not;

A) Left-click on that green tipped Slider. Hold the left mouse button down. Move your mouse, and move the Slider. (Drag)
Move it to the Left to Decrease the screen resolution, or to the Right to Increase the screen resolution.

Can't set it to 1366 X 768? Post back in a Comment.
ALSO, the Color Quality should be set to -
Highest (32 bit)

If not click on the blue down arrow to the right of this box.
In the list left-click on Highest (32 bit)

Now go below to the right, and click on Apply.
After go below to the Left, and click on OK.

Still no joy?
Believe the problem is hardware related.

Could be something as simple (?) as a bad Video Cable.
(Goes from the motherboard, up under the left Hinge, and then up into the Display Assembly)

Could be the screen Inverter.

However the Eee PC 1201HAB is supposed to use an LCD panel, that has qa series of LED's for backlighting.
Newer backlighting that uses a series of LED's for the Backlight, doesn't require a screen Inverter.

There were some LED backlit LCD screen, that DID use a screen Inverter. Mostly the older models of laptops.
This is what makes me think your LCD screen's Backlight, (And LED), may use a screen Inverter,

http://www.batterystyle.com/asus-eee-pc-1201hab-screen-p-168219.html

Scroll down,
"5. Disconnect the power cable and video cable from the Asus EEE PC 1201HAB Lcd panel. The power cable connects the screen's power source, the lcd inverter, to the backlight lamp attached to a side of the panel."

Probably just a generic form, and didn't take in consideration that the Eee PC 1201HAB netbook, uses a series of LED's, as a Backlight.

May not have a screen Inverter.

To explain;
Primer:

An LCD screen cannot produce light by itself,

http://solutions.3m.com/wps/portal/3M/en_US/NA_Optical/Systems/BehindTheScenes/Optics101/

(Click on the window with the computer monitor in it )

It needs an additional light source. A Backlight is the additional light source.
A Backlight can be a CCFL, (Or two of them), or a series of LED's.

[ LED = Light Emitting Diode.
CCFL stands for Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

{Average thickness of a CCFL bulb is 2mm. That is a a little larger than 1/16th of an Inch.
The average length is almost as long, as the LCD screen is in height]

A screen Inverter is used to CONVERT the power from the laptop, for the LCD screen, and Backlight.

Do not see any listings for an Asus Eee PC 1201HAB netbook, for a screen Inverter. Believe the LCD screen uses LED's for a Backlight, and does NOT use a screen Inverter.

Which means if the problem is in the Display Assembly, the LCD screen itself will need to be replaced.
The LED backlighting is built-in.

[Hmmmm, I see a trend going on here that I do not care for, and just woke up to it. Have to replace the entire LCD screen, and cannot just replace the Backlight, or screen Inverter? Sounds like Ka-ching $$$$$ for somebody!

A screen Inverter usually averages from $20 to $40+.
A Backlight ( CCFL) usually ranges from $10 to $15.
An average LCD screen can range from $80 to $300+.]

How to know if the problem is in the Display Assembly?
Use a VGA monitor, and connect it to your laptop.

A) Laptop OFF, monitor OFF. Connect a VGA monitor's cable to the VGA port on the laptop.
(Left side rear. This is an example of a VGA Cable, and VGA connector { Port on a computer },

http://en.wikipedia.org/wiki/VGA_connector )

You can use an older CRT type of VGA monitor (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable attached.

B) Turn the monitor on. If a CRT type allow it to warm up.
Turn the laptop on.
By default the display should automatically show, on the external VGA monitor.
IF not;

There are at least three display options:
1) Internal monitor of laptop ONLY
2) Internal monitor of laptop AND external VGA monitor
3) External VGA monitor ONLY

Press the Fn key down, and hold it down. At the same time tap once on the F8 key.
The F8 key is the Display Toggle-Over key.
(Give it a few seconds. Sometimes it doesn't happen right away)

Still no?
Hold the Fn key down again, and tap once more on the F8 key.

Is the display off to one side on the external VGA monitor?
Post back in a Comment.

Regards,
joecoolvette

Jul 02, 2012 | Acer Computers & Internet

2 Answers

Brother mfc-6490cw lcd screen shows no display (just the backlight is on)


Procedure1: Changing the LCD Contrast setting

  1. Press Menu.
  2. Press the Up or Down Arrow key to choose General Setup.
  3. Press OK. (For touchscreen models, skip this step.)
  4. Press the Up or Down Arrow key to choose LCD Settings.
  5. Press OK. (For touchscreen models, skip this step.)
  6. Choose LCD Contrast and then choose Light, Med, or Dark.
  7. Press OK. (For touchscreen models, skip this step.)
  8. Press Stop/Exit.

Procedure 2: Changing the Backlight Brightness setting
(This option may not appear depending on the model of your Brother machine.)
  1. Press Menu.
  2. Press the Up or Down Arrow key to choose General Setup.
  3. Press OK. (For touchscreen models, skip this step.)
  4. Press the Up or Down Arrow key to choose LCD Settings.
  5. Press OK. (For touchscreen models, skip this step.)
  6. Choose Backlight.
  7. Do one of the following (The menu varies on your model.):
    • Choose Light, Med, or Dark.
    • Press the Left Arrow key to make the backlight darker or press the Right Arrow key to make the backlight lighter.
  8. Press OK. (For touch screen models, skip this step.)
  9. Press Stop/Exit.
In case of a problem or clarification or my solution was insufficient, don't hesitate to post me a reply.

If you are satisfied, rate my solution with the "thumbs" or (even better) add a testimonial.

May 28, 2011 | Brother MFC 6490CW InkJet Printer

1 Answer

How can I get my laptop screen to rotate back to the original screen position?


to rotate the screen in the laptop you can do in two ways.make sure you close all the programs running in the computer before attempting these two steps
1) press and hold the ctrl and alt in the keypad they'll be located at the bottom left part of keyboard..while holding these two keys simultaneously press any one of the four navigation keys(Up,Down,Right,Left arrow keys) depending on how the screen is currently..if its upside down press up arrow key if its tilted towards right press left vice versa.
2)right click on desktop choose graphics settings and then choose display settings where you'll have the option to rotate the screen..

good luck hope this resolves the issue

Oct 02, 2010 | Computers & Internet

1 Answer

I HAVE A T-MOBILE TAP PHONE AND FORGOT THE SECURITY CODE TO UNLOCK IT


You can try doing this steps:

Turn on the phone and when prompted to enter password enter 1234
Press END key twice quickly at the password error screen
Press the dial pad icon
Enter *1673492846 then press the down key on the Dpad
Select menu option 8, 1, 1

Hope that helps...

Jun 30, 2010 | Cell Phones

2 Answers

How do you get the keyboard lights to stay on? They come on and off at will.


Hi,

For you to extend your keyboard lightening time, please do this;

1. Click on the Home button > Options > Screen/Keyboard > Scroll to Backlight Timeout increase to the highest probably 2minutes. This should should keep your backlight on for as long as 2 minutes before it goes off.

This should do.

Regards



Jan 25, 2010 | RIM BlackBerry Bold 9700 Smartphone

1 Answer

Samsung SGH D900I- cannot turnoff keypad sound


The steps are outlined in the article below:

D900 FAQ – How do I disable or mute the keypad tone on my SGH-D900? admin March 6, 2009 --> Note: In order to disable the keypad tone, the Dialing Display Font Type must first be set to “Normal”
To change the dialing display font type follow the steps below:
  1. From the standby screen, press the left soft key for Menu
  2. Select Settings (9)
  3. Select Display Settings (3)
  4. Select Dialing Display (6)
  5. Select Font Type (1)
  6. Highlight either Normal or Theme, using the navigation keys
  7. Press the left soft key to Save the Dialing Display Font Type setting
To turn off the keypad tone follow the steps below:
  1. From the standby screen, press the left soft key for Menu
  2. Select Settings (9)
  3. Select Sound Settings (4)
  4. Select Keypad Tone (2)
  5. Highlight Off, using the up navigation key
  6. Press the left soft key to Save the Keypad Tone setting

Aug 29, 2009 | Samsung SGH-D900 Cellular Phone

1 Answer

Screen's backlight goes off


please change the short cut key of your phone's backlight.

Aug 17, 2009 | Sony Ericsson K850i Mobile Phone

1 Answer

Screen fluctuate/blinks when press left side keypad's buttons


u know ur phone emi number and send it 2 my sum1kewl_2009@yahoo.com

Apr 12, 2009 | Sony Ericsson K850i Mobile Phone

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