Question about Mitsubishi WS-55511 55" Rear Projection Television

3 Answers

Please help me, i have Error code 23 on Mitsubishi WS-55511

My rear projection television will boot up by having that little green flashing light for about 70 seconds then i try to turn it on and the green light stays solid for about 3 seconds then powers off. I did the self diagnosis and got error code 23, i replaced the capacitors and also the IC chip(the chip STK393-110 behind the big heat sink and applied thermal paste), i still get error code 23. I have read on many forums about PICO fuses and i'll change all of them if that can help, i don't know how to use a multimeter(yet) to check the voltages on all the things on the board. With the multimeter is it necessary to unsolder every piece to check the voltage? I will check every piece if i knew how to do that properly so i can replace them.

I've been on this problem for over a month now and i don't have the money to pay a technician to fix it, i am proficient in soldering. Also i know the error code 23 Horizontal Deflection failure but i have no idea what that means. If there is anyone out there who can help me it would be awesome and i would appreciate it, also pictures of the parts i need to check would be nice since i'm not really sure what they look like although i can see the numbers and letters besides all the parts.

I hope that is enough information for someone out there to help me, if you need more information please don't hesitate to ask, thank you

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  • dcxguy48080 Sep 24, 2008

    i have the same problem i get 23 error code........can u tell me what to check..i pulled the horizontal output transistor and it tests ok....

  • lakingsfreak Sep 26, 2008

    I just bought this tv used, worked great before I brought it home. I plugged it in with extension cord. Power button blinked then stopped. Pressed power button, green light came on, then I heard a pop like a fuse popped. Press reset button, press power button, green light comes on then off. I got a code 23 out of it. Any ideas what could of happened? Could plugging it in with a ext cord or moving it to my house caused this problem? Any help would be very greatly appreciated. Thanks, Dan.

  • Tom Fillmore
    Tom Fillmore May 17, 2009

    I bought my ws-65611 at an estate sale broken and found that it gives error code 23. Checked the dm board for faulty caps and found none. I resoldered the flyback and a few other components that looked like they could use it. I would like to know what advice Slinteriors was going to give to the original poster. I will reassemble everything tomorrow, but before I took it apart the tv would briefly come on (less than a second), and then turn off right away. Let me know if you have any advice for what may be the problem, Thanks



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A 23 error is loss of horizontal deflection First thing to check is the solder joints around the Flyback and around the two transformers T5A31 and T5A32. If you resolder those three items then pull the Q5A31 HOT ( Horizontal output transistor ) from circuit. If you send me a email to I will walk you through how to test the various components in the Horizontal deflection circuit and help you get your set up and running again.

Posted on Aug 02, 2008

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I replaced STK393-110 and after I had unsoldered it and was removing it, some of the legs just fell off. After I replaced the IC everything is back to normal. I had to go into the service menu to do some fine tuning to the convergence, but otherwise that solved my problem. My ws-65611 previously had error code 23 and would power up for a second and then shut off. Hope this helps someone down the road.

Posted on May 28, 2009

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you guys can send your convergence board for repair and let the professional do it for you for cheap,just go to and do a search"mitsubishi tv ws-55511 & others convergence board repair" or by listing #330704288594.

Posted on Apr 02, 2012

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SOURCE: Mitsubishi WS-55511TV gives 2,2 error code. I

I have both photos and complete instructions, I will attach photos here and instructions if you provide email, OK?




Keep in mind I am in California and time differences.

Posted on Dec 04, 2010

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Related Questions:

1 Answer

Ws-55511 green light changed caps. where is pico fuse located ?

There are at least two pico fuses in the DM unit along with the caps; DM is large metal box on left as you look from behind.

Blinking green light that does not stop means problem is in DM unit that is not booting up.

If you have questions let me know.


Sep 29, 2011 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Power will not come on! when I plug it in the green light on front blinks and goes off.

not sure of this but count the blinks. two numbers worth. example, 2 blinks and a pause then 3 would mean error code 23. that might get you started on the path to where the problem is located at least. then go from there. I forgot half of what I knew when I was in the field of repair.

Nov 25, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Green status light flashes 11 times then stops then does it again.Tv doesnt turn on.

do me a favor, when set shuts off, press and hold menu and input buttons on front of set for five seconds and release both, light will blink a two digit error code, and repeat it several times, let me know error code and I will tell you what it means.


Nov 11, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

The green light on the front panel is flashing but

Try website to buy a refurbish DM power board for the replacement.U know soldreing?Buy capacitors for the replament.

May 14, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Mistubishi WS-55511 won't stay on

23 is a horizontal deflection error could be ho transistor flyback or high voltage splitter

Sep 17, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

Power up

the error code will be a blink code from the led it should blink a couple times vbriefly pause and then blink again. Count the blinking led in between the slight pause.

Aug 03, 2008 | Mitsubishi WS-55511 55" Rear Projection...

2 Answers


Press in together the menu button and the Device/input button on the set and hold them both in together for 5 seconds and see if the led will blink a two digit error code, then respond to this same post and let me know if it gave a error code and what the two digits were.

Aug 02, 2008 | Mitsubishi WS-55511 55" Rear Projection...

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