I have an lg 55la6205ua tv. When I turn it on the LGlogo flashes once and then disappears. The On indicator light then flashes 3 times and also disappears. I have sound but no picture.

Try following the steps below.
Step 1
Press the power button once. If the TV does not turn on, observe the LED indicator, usually located on the TV's lower front panel. If the LED indicator turned off after you pressed the power button once, it is in standby mode. Press the power button once again to exit standby and turn on the TV.

Step 2
Observe the Standby light if the remote control will not work. If the Standby light stays on, the television is in Standby mode. Press the power button on the television, then try to use the remote.

Step 3
Turn the Energy Saving Switch off, then press the power button. The Energy Saving Switch is located on the rear or side panel on most Sony model TVs. Refer to your TV user manual for the exact location of the switch.

HI NENITA, Did you try these codes--> 024, 040, 098

Setting Steps: Input Code
1.) Find out the 3-digit code for the TV that you need to control from the "Code list" In case there are several groups of codes available, please use the first group at first; in case that your TV brand has no matching code in the code list, please try the "Search For the Correct Code" mode described later.

2.) Press and hold the "Setting" button at first, then press the "Power" button. Release both buttons after the indicator light illuminates, indicating the status of code input; in case the indicator light is in other status, it indicates that it's yet to enter the code input status, and this step shall be repeated till the light illuminates.

3.) Input sequentially the 3-digit code that you have obtained. The indicator light flashes once when one digit is input. After the input of the code, the indicator light extinguishes; in case indicator light flashes twice successively, it indicates that your input is wrong and you need to input again.

Note: In case the indicator light keeps illuminating after two flashes, you only need to input the correct 3-digit code and do not repeat Step 2, otherwise Step shall be repeated for resetting.

4.) When the Indicator light extinguishes, the setting ends, then you can remotely control your TV with the remote controller.

The best option would be to download this manual available at

http://tv.manualsonline.com/mdownloads/0044161a-203f-405d-a73c-ae45a8e7e3b1.pdf

Else try these steps

1 Press SET more than two seconds. The SET indicator lights up.
2 Press the Component Select button for the desired component.
The SET indicator lights up.
3 Press CH + or CH - and POWER in turn until the component
reacts as follows:
TV, DVD Home Theater: Powers off
Other components: Powers on
Press CH + to go to the next code number.
Press CH - to go back to the previous code number.
The SET indicator flashes once after the numbers have turned one
cycle.
One cycle means, for example, that the commander finishes
searching all the component code numbers allocated to the
component.
4 Press ENTER.
The SET indicator and the Component button turn off.
If the SET indicator flashes five times before turning off, it means
that the setup is incomplete. Start over from Step 3.
If the component does not operate properly, repeat steps 1 to 4 and
search for another code.

Pl note while you are doing this to take care of the following points

• Check that you're aiming the Commander directly at the component, and that
there are no obstructions between the Commander and the component.
• Make sure the batteries you're using are not worn out, and that they're
inserted correctly.
• Check that the button of the TV, VCR, CBL, or DVD is pressed to choose your
desired component.
• Check that the component has infrared remote capability. For example, if
your component didn't come with a remote commander, it probably isn't
capable of being controlled by a remote commander.
• Should any problem persist, reset the Commander to the factory setting by
pressing the POWER, INPUT and VOL- buttons simultaneously.

Error Indication Information
Error No. Error Information ERROR DESCRIPTION LAMP LED OSD LAMP OFF
(Note 3) (Note 4)
POWER LED TEMP LED
Note:
1.When any of the above errors has occurred, the LED will flash as shown above every 5 seconds.
2.When two or more errors have occurred at the same time, the LED will light up or flash as shown above, and then
change to another every 5 seconds in turn.
3.Warning OSD appears when the Air Filter is clogged 90%, accumulated operation time of the Lamp reaches 5000 hours,
or accumulated operation time of the Air Filter reaches 400 hours.
4.LAMP OFF: The LED will flash right after the Lamp goes off.
5.IC2301 is mounted on LCD Main C.B.A. which is included in the Projection Unit.
6.IC6001 is mounted on TV Main C.B.A.
Clogged air filter
more than 90%
15)
16)
17)
18)
1)
2)
3)
4)
5)
6)
7)
11)
8)
9)
10)
12)
13)
14)
- flashes 5 times -
every 5 seconds
IC2301(pin82) detects the clogged air filter, then indicates the
error when the air filter is clogged 90%.
Front Fan stop or
Lamp Fan stop
flashes orange
once every
5 seconds
- -
IC2301(pin12) detects the Front FAN stop or Lamp
FAN stop, then indicates the error when the Front FAN
or Lamp FAN is stopped.
Lamp Cover open
Temperature Sensor
short or open
flashes orange
twice every
5 seconds
flashes orange
3 times every
5 seconds
flashes green for
140 seconds.
flashing red for
60 seconds.
light up red.
flashes once
every 5 seconds
flashes once
every 5 seconds
flashes red for
10 minutes
flashes once
every 5 seconds
-
-
-
-
Abnormal
Temperature
flashes twice
every 5 seconds
flashes twice
every 5 seconds
- -
Request for Lamp
Replacement - - lights up
Power Ballast Error
(abnormal
Lamp voltage)
- -
flashes 3 times
every 5 seconds
Power Ballast Error
(abnormal
temperature)
- -
flashes 4 times
every 5 seconds
Power Ballast Error
(other causes) - -
- -
Request for Filter
Cleaning -
Abnormal Voltage
on 16 V line of
LCD Main C.B.A.
-
flashes twice
every 5 seconds
flashes twice
every 5 seconds
Abnormal Voltage
on 14 V line of
LCD Main C.B.A.
-
flashes 3 times
every 5 seconds
flashes 3 times
every 5 seconds
Abnormal Voltage
on 7 V line of
LCD Main C.B.A.
-
flashes 4 times
every 5 seconds
flashes 4 times
every 5 seconds
IC2301(pin76) detects the Lamp Cover Unit condition
(open or close), then indicates the error when the
Lamp Cover Unit is open.
IC6001(pin85) detects the Duct FAN stop, then
indicates the error when the Duct FAN is stopped.
IC2301(pin74 and 75) detects open or short of the Temperature
Sensor (R2911) on Front Thermistor C.B.A., then indicates the
error when Temperature Sensor is open or shorted.
(The error is not detected for 1 minute after Lamp ON.)
IC2301(pin74 and 75) detects the temperature attached near
the Front FAN by the Temperature Sensor (R2911) on Front
Thermistor C.B.A., then indicates the error when the
temperature becomes more than 43 C (109 F).
(The error is not detected for 1 minute after Lamp ON.)
IC6001(pin86 and 87) detects open or short of the
Temperature Sensor (R2901) on Lamp Thermistor C.B.A.,
then indicates the error when Temperature Sensor is open or
shorted.
(The error is not detected for 4 minutes after Lamp ON.)
IC2301(pin74 and 75) detects the temperature attached near
the Lamp by the Temperature Sensor (R2901) on Lamp
Thermistor C.B.A., then indicates the error when the
temperature becomes more than 60 C (140 F).
(The error is not detected for 4 minutes after Lamp ON.)
IC2301(pin11) detects the error of LCD Power C.B.A.,
then indicates the error when the temperature fuse
(117 C)(243 F) in LCD Power C.B.A. is open.
IC2301(pin11) detects the error of LCD Power C.B.A. and Lamp,
then indicates the error when an inner malfunction of LCD Power
C.B.A. occurs, the Lamp voltage becomes more than 130V or
less than 30V, Lamp current becomes more than 5A, or the Lamp
is cracked.
IC2301(pin11) detects the error of the Lamp, then indicates the
error when the Lamp is short-circuit.
IC2301(pin48) detects +16V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +13V.
IC2301(pin47) detects +14V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +11V.
IC2301(pin45) detects +7V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +5.7V.
IC2301(pin44) detects +3.3V line voltage on LCD Main
C.B.A., then indicates the error when the voltage
becomes less than +2.5V.
flashes 3 times
every 5 seconds
flashes 4 times
every 5 seconds
Abnormal Voltage
on 3.3 V line of
LCD Main C.B.A.
-
-
-
- flashes 5 times
every 5 seconds
Forced cooling
The failure of Lamp
light up
-
Temperature Sensor
short or open
-
-
Abnormal
Temperature
Duct Fan stop -
When accumulated operation time of the the Lamp reaches
5000 hours, OSD (replacing the Lamp) appears on the screen.
Note: The Lamp time is stored in EEPROM (IC2305).
When accumulated operation time of the Air Filter reaches 400
hours, OSD (cleaning the Air Filter) appears on the screen.
Note: The Filter time is stored in EEPROM (IC2305).
During forced cooling, this indication is indicated.
IC2301 (pin11) detects the failure of light up processing of
the Lamp, then the POWER LED is changed as follows.
1) POWER LED flashes green for 140 seconds (while turning on).
2) POWER LED flashes red for 60 seconds (while cooling).
3) POWER LED lights up red (standby).
Note: If the Lamp will not light after attempting turning on the
power 2 or 3 times, the Lamp, the LCD Power C.B.A. or the
LCD Main C.B.A. may be defective.
Error Symptom Problem Possible Solutio

Replace the Lamp P/N 915PO20010 if it has never been replaced.
Mats Electronics has them for $99.00 1-800-628-1118

Once the status light blinks 3 times, this is an indication that there's a problem with the lamp. The lamp may need a replacement.

If you replace the lamp, but get the same problem, check the inverter board.

If you're not sure where the inverter board is, then you may need to contact a pro for your safety.

Good luck and have a good evening!

2. Locate the 5-digit code for your TV (see pages 13-16).
3. Move the slide switch to TV.
4. Press and hold in the MUTE and SELECT keys at the same
time until the green light under the TV icon flashes twice
and then release both keys.
5. Using the number keys enter the 5-digit code for your
brand of TV. If performed correctly the green light
under TV will flash twice.
6. Aim the remote at your TV and press the power key
once. The DIRECTV Receiver should turn off. If it does
not turn off, repeat steps 3 and 4, trying each code for
your brand until you find the correct code.

10856 for Lg tv

Hello

Your phone need to flash or re flash because you have corrupted files flashing is the way to back in normal function..

Angel
Thanks...

Depending on what light is flashing it could be a few things. If the Lamp light (the middle one) is flashing that is problem with or around the lamp. That orange or amber light is an indication that the lamp is reaching the end of its life

If it is the Temperature light (the far right one) then the TV is shutting down because it is over heating and you need to check the cooling fan.