Question about Mitsubishi WS-55908 55" Rear Projection Television

1 Answer

Mitsubishi 55908 powers on then powers off

TV powers up for about 2 - 3 seconds then powers off.  Problem code is 22.  From my other findings, this is a short.  I believe I can fix it myself with a little direction.  Can someone talk me through it?

Posted by problem351 on

  • problem351 Oct 20, 2007

    so how can I fix the short? resolder th ic heat sink?

  • problem351 Oct 20, 2007

    my problem was the power turning off 3 seconds after I turn it on.This was my instruction:



    A short causes an open fuse. In this case, one or two open



    pico fuses in power supply. Usually,the short is one of the



    convergence IC's== STK unit(s) mounted to large heat sink on



    middle PCB.Check it out and let me know if you need more help........T.




    I was a car stereo installer for many years and understand how to operate a meter and how to solder.  If someone can tell me exactly how to fix it I would really appreciate it.

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A short causes an open fuse. In this case, one or two open

pico fuses in power supply. Usually,the short is one of the

convergence IC's== STK unit(s) mounted to large heat sink on

middle PCB.Check it out and let me know if you need more help........T.

Posted on Oct 20, 2007

  • Vista Electronics Oct 20, 2007

    Does your set power off  or  shutdown?



    Power off means you can power back up for 2 seconds by



     pushing the power button...



    Shuts off or shutdown can mean you must unplug the ac cord



     to get it to power up for 2 seconds again...



    Power off generally is caused by a missing voltage,i.e. an



     open fuse in the power supply circuitry.Identifying which fuse



     is open will help diagnose which part shorted.Ex.=== if one or



     both of the fuses protecting the B+ to the convergence IC's are



     bad, then the convergence IC's need to be changed..



    If the set goes into shutdown,then more likely the problem is



     in the horizontal circuitry,which is on the main or HV scan PCB,



     the one with the flyback xformer on it. As you can see,



     diagnosis is key.  Hope this helps you along...T.



      

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1 Answer

Ws-55819 has code 22. It will power off within seconds.


Error code 22 on this model is most freguently a problem with convergence. Error code 21 is usualy the DM module.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Convergece problem - Common Symptoms include....

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some images of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Or goto the site www.TvRepairKits.com for the parts and instructions on how to fix it yourself

Apr 23, 2011 | Mitsubishi WS-55819 55" Rear Projection...

4 Answers

MITSUBISHI WT-A42 ERROR CODE 22 "SHORT PROTECT CIRCUIT"


error code 22 is a short protect circuit. this means the tv has found a problem in the tv and will not let it turn on till fixed. this could be several different circuits in the tv that is causing this. we need to test some parts to see what this is. the most common is a shorted convergence circuit. a repair on this would range around 400.00. You should check using a multimeter and also you should be good at soldering

PS:I strongly advice if you don't have experience in electronics then better leave this job to a tech

Feb 17, 2008 | Mitsubishi WT-42313 42" Rear Projection...

1 Answer

AFTER TURNING ON TV ,THE GREEN LIGHT COMES ,SOUND STARTS AND THEN TV TURNS OFF ASAP


after tv shuts off press and hold menu and input buttons on tv at same time for about 8 second. power led will start to blink error code 12 ok 22 dead short 23 deflection failore 24 vertical failore. after you know error code have electronic technition repair for you. J.D.W.

Jun 24, 2010 | Mitsubishi VS-50607 50" Rear Projection...

1 Answer

Mitsubishi 5511 getting a code 22 - short protection fault. How


Code 22 points towards a failure in the convergence section of the TV. You can get a convergence repair kit from www.TvRepairKits.com to do the repair yourself.

Apr 20, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

The tv has no power ...happened before 2 years ago. Atech came out and spent about 5 minutes behind the TV and it was fixed. I believe it was a fuse. Is this something I can fix myself??


Yes , just find the blacken fuse
or if none appear to be black ,look
very closley at the fuses and you
should be able see the broken wire
inside the glass houseing pull it
take it to raido shack replace it done.
Hope they didnt charge too much.

Jul 01, 2009 | Panasonic CT-36HL43 36" TV

1 Answer

I turn on the TV and after about a second it turns back off


22 error is the code for short protect which could be the two STK392-110 Convergence ICs as thats the number one component to short out . It could also be leaking coolant check the boards for any sign of a sticky residulr that would indicate that the CRTs are leaaking coolant on the boards.

Apr 27, 2009 | Mitsubishi VS-70707 70" Rear Projection...

1 Answer

Won't power on...


Unplug the TV for a minute then plug it in while observing the power light. If the light flashes three times then the standby power supply is OK.

If the standby power supply is OK, a diagnostic code can be read from the green power light by counting the flashes. Press the power button once (this sets the diagnostic code). Press and hold the INPUT and MENU buttons on the fron panel for 5 seconds then release. The green light flash a two digit code (x flashes, followed by a pause, then y flashes). If it flashes a 2-2 code then a short circuit has been detected in the switched power supply. It would normally flash a 1-2 code for "no problem detected".

If a 2-2 code is read, check for blown pico fuses on the POWER circuit board. If the FA904 or FA905 fuses are blown then most likely at least one of the two convergence driver ICs are bad. It seems like this is the most common failure. I replaced these fuses and ICs in my TV. The parts cost me $50, but it required extensive disassembly, PC board desoldering & resoldering, and reassembly. If you can resolder circuits on a PC board then you can probably fix it yourself, otherwise call a repair person.

Sep 07, 2008 | Mitsubishi WS-65807 65" Rear Projection...

2 Answers

Mitsubishi VS-50705, 50 inch Rear projection TV won't turn on!


most of the time the convergance ic go bad:
but try this:
The 3 flashes of the led when you plug the unit in is the
microprocessor initializing.

This unit has an error code diagnostics.

On the front panel of the unit press and hold the INPUT and MENU
buttons at the same time and hold them down for about 5 or 6 seconds.
The unit should activate it's error code mode.

The led will flash count the number of flashes. It will then pause for
1/2 or 1 second. The led will flash again count the number of flashes.
The unit will repeate this for about 5 or 6 times.

You now have the two digit error code. The first time the led flashed
is the first number of the error code, the next time the led flashed is
the last number of the error code.

12 ----------- indicates no error
21 ------------- X-Ray Protect circuit
22 ------------ Short Protect circuit
23 ------------- Horizontal Deflection failure
24 ------------- Vertical Deflection failure


Most units give a error code "22" short protect circuit. If so check:

Q5A00
C557

If Q5A00 check bad there are other parts that have to be checked or
replaced.

If you are able to do above call a tech to service the unit

Dec 11, 2007 | Mitsubishi WS-48613 48" Rear Projection...

1 Answer

Error code 2-2


error code 22 means short to ground. for a start check your power supply to see if anything is shorted to the ground.

Oct 14, 2007 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Tv powers on and goes off after about 3 seconds


This set has a problem in the horizontal sweep circuit or in the main power supply. Most likely a failed component, and the set shut down to protect the rest of the circuit. If you know how to read a schematic diagram and how the circuits operate, then you will need a good multimeter and an ESR type capacitor checker to find out the short in this set. Sometimes the CRTs(Picture Tubes) will leak the coolent fluid out and onto the printed circuit boards. Also sometimes the convergence IC's can cause this problem, but if that is the case the small little pico fuses will pop also. If you have had no solid state or printed circuit repair experience, play it safe and call in a trained tech. Good Luck

Mar 17, 2007 | Mitsubishi WS-55907 55" Rear Projection...

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