This set has a self check feature--if set has been unplugged it clears the error buffer--plug in and try to turn on set.
When green light comes on and then goes off ON THE FRONT OF THE SET press and hold BOTH the menu and input(device) buttons at same time for at least 5 seconds and release both buttons.
Power light will blink a 2 digit error code like 2 blinks, 2 blinks, a pause and repeat the code for a total of five times.
Let me know what error code you find and I will explain it.
SOURCE: my ws-55315
Good Day afsho;
This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. Shutdown at power with self diagnosis error 2-2. Check for open fuses F9A04 and F9A05 part # 283P144080 on the +24 and -24 volt lines. If the fuses are open the convergence output circuit would be suspect. 2. Shutdown at power with self diagnosis error 2-1. At power on check for 12-volts DC at connector KH pin 8, if missing check IC9C51 part # 270P990010 and L9C.
good luck, big irish.
SOURCE: Have a ws-42413 mitsubishi TV
This behavior could be an indicator of power supply problems or abnormal current drain from elsewhere in the set.
Modern supplies are, by design, able to shut down if voltage or currents aren't within the design limits of the circuits they are servicing.
Without some hands-on it is not possible to isolate the problem unless one of the forums deals with a series fault.
If the set had a reset button, it would be located on the outside of it where the user could reset it.
The reset buttons one finds on some sets is nothing other than a very cheap kind of thermal circuit breaker that trips when current is above its limit.
These are kind of prone to failure themselves.
SOURCE: Mitsubishi WS-65809 turns off right away
check the collector drop on Q29a002. If it is less than 16 nano amps, repl ic u12 in conver circuit. stk392-570 and pico fuses f04 and f05 24v circ
SOURCE: My model is a WS-55511. I turn on the TV, the
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MOST OF THESE SETS HAVE A SELF DIAGNOSTIC:
UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER
LIGHT COMES ON FOR A MOMENT AND GOES OFF.
PRESS AND HOLD “device” and “menu” buttons on front of tv
for at least 5 seconds and then release both together.
Watch for power light to blink in a sequence:
1 blink-then 2 blinks-------no error
2 blink-then 1 blink-------X-ray protection
2 blink-then 2 blink-------SHORT PROTECTION*******
2 blink-then 3 blink---------deflection circuit problem
2 blink-then 4 blink---------vertical circuit problem
******2, then 2 is most common---usually means one of the
fuses that protect the Convergence IC or IC’s is blown---set will detect no
voltage to convergence IC and shut down.
SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES AND THEN TO
GET IT TO REPEAT MORE YOU HAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.
IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM
SOURCE: I have a Mitsubishi big screen tv model #WS-65857
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MOST OF THESE SETS HAVE A SELF DIAGNOSTIC:
UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER
LIGHT COMES ON FOR A MOMENT AND GOES OFF.
PRESS AND HOLD “device” and “menu” buttons on front of tv
for at least 5 seconds and then release both together.
Watch for power light to blink in a sequence:
1 blink-then 2 blinks-------no error
2 blink-then 1 blink-------X-ray protection
2 blink-then 2 blink-------SHORT PROTECTION*******
2 blink-then 3 blink---------deflection circuit problem
2 blink-then 4 blink---------vertical circuit problem
******2, then 2 is most common---usually means one of the
fuses that protect the Convergence IC or IC’s is blown---set will detect no
voltage to convergence IC and shut down.
SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES AND THEN TO
GET IT TO REPEAT MORE YOU HAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.
IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM
if your set does not have a device button press Menu and Input together for 5 seconds and release. there will be a pause between blinks---2 blinks, a pause and two more blinks etc.
If you need help: [email protected]
I do this here for free so if this has helped you give me a vote here.
Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
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