Set runs for 20/30 seconds, turns off red light blinks 5 times.

Any of the things you mentioned can cause the set to not power up, start by testing the power standby voltage, if its around 3.5 volts check the power on command from the main, if it's missing replace the main, if it looks ok (around 3.3 vdc) test the other power supply voltages, this set should be easy to troubleshoot.

Try a reset. Start by unplugging for 1 minute, then plug back in & if still won't restart try the following. If none of the following work, you will need a technician.

Initializing the TV in many cases can remedy a problem.
In the 2006 product line Initialization is now a user function.
Pressing the front panel "INPUT' and "FORMAT"
buttons at the same time activates Initialization. When
complete all user settings will have to be set again. The
table in Figure 4-3 list the User Initialization procedures.
Note: Pressing INPUT and FORMAT is the same as
the Initialization in the Option Menu (MENU-2-4-7-0)
Order Name Procedure Results Notes
1 System Reset Press <System Reset>
on Front Panel
Hardware & TV operating
software reset.
POWER/Timer LED flashes for 60
seconds. No customer settings
are changed.
2 User Initialization
Press <INPUT> &
<FORMAT> on Front
Panel at the same time.
All customer Audio &
Video settings are reset to
factory default.
All customer settings will need to
re-configured.
3 Reset System
Defaults
From the remote, press
<MENU> <1-2-3>
<ENTER>
All customer settings
except V-Chip are reset to
factory default.
Netcommand, Channel Memory,
etc., will need to be re-configured.
SERVICER
PROCEDURE 4 Initialization
From the remote, press
<MENU> <2-4-7-0>*
select "INITIAL" press
<ENTER>
All customer settings are
reset to factory default.
All customer settings will need to
re-configured.
MITSUBISHI RESET / INITIALIZATION CHART
CUSTOMER
PROCEDURES
Figure 4-3
Figure 4-4
LED Indications
The front panel LEDs, refer to Figure 4-4, also assist in
determining the cause of a symptom. Figure 4-5 illustrates
normal LED operation. Figure 4-6 shows the
LEDs response when a problem is detected and indicates
the possible cause.
Power/Timer
Indicator
Status
Indicator
Lamp
Indicator Condition
Off Off Off Off (standby)
Blinking green
fast Off Off Initialization (10 - 65 seconds)
Off Off Blinking
green fast Lamp runs for 1 min after PTV off
Green Off Off Power On
Blinking green Off Off Power On Timer is set
NORMAL LED INDICATIONS
Power LED Status LED Lamp LED Condition
High Temperature - check ventilation air flow.
(Temperature sensor is disconnected.)
Off Off Blinking yellow Lamp cover is open.
Lamp failure (Lamp fails to turn on)
Off Off Red (Lamp turns off after lighting)
Lamp is broken
Off Blinking Red Off Fan Stop
Off Red. Off Circuit failure. (Run Error Code Check)

A blinking yellow for this model indicates the TV is too hot, unplug & allow 30-45 min to cool before re-plugging .
OR: lamp not installed or lamp door not closed. there is a lamp door switch that may not be closing, simulating door not closed

LED Indications

The front panel Status LED provides an indication of

the set's operation and the possible cause of a malfunction.

If an abnormal condition is indicated, perform the

Self Diagnostics procedure.

Self Diagnostics

To activate, press the front panel <ACTIVITY> &<CH

??> buttons at the same time and hold for 5 seconds.

The STATUS LED will then flash denoting a two digit

code.

• The number of flashes indicates the value of the

MSD (tens digit) of the Error Code.

• The flashing then pauses for approximately 1/2

second.

• The LED then flashes indicating the value of the

(ones digit) of the Error Code.

• The Error Code is repeated a total of 5 times.

Example: If the Error Code is "23", the LED

will flash two times, pause, and then flash three

times.

Table 2-2: LED Indications

Error Codes, descriiptions and the most likely cause of

the error are listed in Table 2-3.

Note: The TV must be in "Shut Down." The LED

will probably be indicating an abnormal

condition. If the TV is switched Off, AC is

removed, or a System Reset is performed, the

code automatically resets to "12" No Error.

See the Error Code Log to retrieve a history of

errors.

Note: Use the front panel buttons, not the remote

control.

Note: If there is no response, the front panel may be

locked by a V-Chip setting. To unlock, press

and hold <ACTIVITY> on the front panel for

8 seconds.

LED Indication Condition

Off Off (standby)

Green Power On

Slow Blink Green Power Off with Timer Set

Fast Blink Green (80 seconds) > Off Power Off (Cooling fan still working, 80 sec)

LED Indication Condition

Red Lamp Failure

Yellow TV Too Hot

Slow Blink Red TV May Require Service

Slow Blink Yellow Lamp Door Open or No Lamp Installed

NORMAL INDICATIONS
ABNORMAL INDICATIONS (For details perform Self Diagnostics Procedure.)

check this
The Service Default Mode (SDM) is a technical aid that can be used to display the your TV error code.
Follow these instrutions exactly to place your set in SDM Mode.
For sets that still have video do the following.

1. Turn your TV on
2. Using the original Philips TV remote press the following keys. Press each key for 1 sec then press the next.
3. From the remote press 0 6 2 5 9 6 MENU
4. You should now see the letters "SDM" in the far right hand corner.
5. If not do step "3' again.
6. To display the error code hit the "Status" button on your remote.
7. The TV can store up to "7" past errors.

For sets that have no video do the following.

1. Turn your TV on
2. Using the original Philips TV remote press the following keys. Press each key for 1 sec then press the next.
3. From the remote press 0 6 2 5 9 6 MENU
4. Wait a few seconds. The red power light should begin to blink.
5. The blinking sequence will determine the error code.
6. You will have one long 5 second red blink followed by the error code.

Note: On some sets the TV will automaticaly blink the error code when its powered up without having to go into the SDM menu. If you power light blinks after the set is powered up jot down the sequence.
Example Error Codes from the power light.
( RED 5 Seconds ) off ( RED 1/2 Sec ) off ( RED 1/2 Sec ) off ( RED 1/2 Sec ) = Error Code 3
Example #2
( RED 5 Seconds ) off ( RED 1 Sec ) off ( RED 1/2 Sec ) off ( RED 1/2 Sec ) = Error Code 12



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if model indicated do the self check it has:

On front of set when green light for power goes out press and hold both the menu and input (source) buttons at the same time for at least 5 seconds and release both buttons.

Power light will then blink a two digit error code like 2 blinks, 2 blinks a pause and repeat it for a total of 5 times.

If set has been unplugged you must plug it back and try to get set to turn on--unplugging clears the errors.

Let me know what error you find and I will tell you what it means.

hello i've just checked the manual for here is some information

None TV is powered off. Normal operation.

Green TV is powered on. Normal operation.

Green 1. TV just plugged into AC outlet.

Wait until blinking stops before turning on (approximately 1

minute). Normal operation.

2. AC just restored after power failure.

3. TV Rebooting after System Reset was

used.

4. TV Rebooting after power fluctuation

or receiving abnormal digital signals

from digital channel, or digital device.

5. You have begun the procedure to

update software from an authorized

flash memory device.

For detailed information, see the instructions that accompany

the authorized software update. IMPORTANT: Do not

use unauthorized software at any time.

Green TV just powered off and lamp is

cooling.

Starts to blink 30 seconds after turning off TV. TV can be turned

on before blinking starts or after blinking stops, but not while the
indicator is blinking. Normal operation. hope it helps regards shaun
Green TV powered off and auto-on timer is set. Normal operation. TV can be turned on at any time.

Hi,
3 times LED blinks in Panasonic PT-47WX42 shows problem with convergence out chips failure as this tv has two big black ICs STK392-110 as convergence output, replace them to fix tv problem.
Click Part Store to see an image of required chip and price info.
Local tv tech is recommended if you have no experience of working in tv circuit boards.
Thanks.

hello 2 blinks on this tv means you have this issue below
PT-44LCX65
2 blinks 5 secs you have your lamp cover open

check for this

hope this helps

hold the menu and input buttons simultaneously for 5 seconds. the tv will blink an error code
Error Code Probable Cause
12 Normal Operation - No Error Detected
21 X-Ray Protect
22 Short Protect - likely convergence IC failure
23 Loss of Horizontal Deflection
24 Loss of Vertical Deflection

Fast Blink for 70 sec. After AC is applied = Normal - DM μPC is booting up
Fast Blink (doesn't stop) After AC is applied = TV μPC is running, but DM failed to boot up
Slow Blink Set is Off = Normal - Timer is set for Automatic Turn ON