Question about Mitsubishi WS-55819 55" Rear Projection Television

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Mitsubishi ws55819 has no picture

I have a ws55819 that has the 2 2 error. I would like to replace the Pico fuses and the xonvergence IC's myself but I am having trouble locating them since I do not have a copy of the service manual for this TV.
I have electronics experience because I use to do board level repairs for arcade equipment. I would also like to know if anyone knows what the easiest way to remove the board tray would be.


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  • Adam
    Adam Jan 09, 2009

    What is the easiest way to access the screws if I am not pulling ut the board tray? Do I need to take the panel off of the front of the TV? Also curious how many pico fuses and convergence IC's there are on the board and where they are physically located. I know that the IC's are mounted to the heatsink but I do not know where the pico fuses are.


  • Adam
    Adam Jan 09, 2009

    I am also curious what the easiest way would be to disconnect the ribbon cables that attach the center board to the other two baords.

    If anyone has a service manual for this tv please send me a link

  • Adam
    Adam Jan 15, 2009


    I am still in need of assistance with this cany anyone help me out? I really want to make this TV work again

  • Adam
    Adam Jan 15, 2009

    Ok I got the service manual but I still can not see how to get the center board out without removing the whole tray.

  • MrGoal Jan 16, 2009

    My Mitsubishi rear projection TV model WS-55819 tv won't turn on. Push the turn on button and 1-2 seconds later you hear a click and the button light turns off.

    May someone share a copy of his service manual for this model TV? Please e-mail it to me.


  • mlcheat35
    mlcheat35 Feb 04, 2013

    the click you hear is the computer doing the over heat shut down there is a problem with the board . probably a lack of sauder on the board i fixed mine by adding more where mine looked thin



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The pico fuses are 6.3 amp. any type pico fuse rated at 6.3 amp will do and the convergence ic's are labeled on the body of the ic. (STK 391-010 or similar). the board that the ic's are on can be removed without removing the entire tray. the connectors are marked and even different sizes to prevent miss-connection when installing board abain. be carefull removing the board as the screws holding it in also hold the heat-sink for the ic's as well as the shield for the generator module.
And do please unplug the set first!!

Posted on Jan 04, 2009

  • gscrivner7 Jan 15, 2009

    If you have an ic puller, these work just fine in removing the ribbon connectors. Note that the ribbon connectors only disconnect from one of the boards! the other side is hard wired so don't force it. The side which comes off is easily grasped on each end with thumb and forefinger although it may be a little hard to do by hand.



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I have a mitsubishi ws-65809. I relpaced the STK392-570 ICs and turned on the tv and it powered on for 2 secs and went off. I ran the test and got a 2 and 2 blink. Then ran test and got a 1 and 2 blin

If you unplugged the set you will get the 1,2 no error found, the 2,2 is short protection, I hope you had that before the chips were replaced, it is one or both of the pico fuses bad that protect those chips.

see photo of board, locations are 9FAo4 and o5 on the middle board where the chips are but further back.
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Dec 15, 2012 | Mitsubishi WS-65809 65" Rear Projection...

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My 65 will not stay on. 2.2

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Jul 09, 2012 | Mitsubishi Televison & Video

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Mitsubishi convergence issue

First is consider what the issue is: nothing moves convergence wise or only one color etc.

Also follow if needed the voltages from the pico fuses involved---one will be a negative voltage and the other a positive one--follow them from the diodes for each voltage to the chips---"Got Voltages?"

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Will bad convergance ic's keep my Mitsubishi

If one of the two stk-392-570 chips has shorted it will blow a pico fuse on middle board and set will not come on.

Plug set in, turn on, when green power light goes out on the front of the set press and hold both the menu and input (device) buttons for at least five seconds and release both.

Power light will blink a two digit error code: if 2,2 it is a blown pico fuse and the chips also must be replaced. I have start to finish step by step instructions that are available if the customer selects me to answer in the new Marketplace here on Fixya.

see attached photo of chip and also part of middle board with the green pico fuses.



10_4_2011_6_10_21_pm.jpgchips look like this but will have 570 number on them.


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I have a convergence problem on my Mitsubishi 65 inch rear projection tv (model number WS65511). I see red double images on all four sides. Middle of the screen is OK. Which IC Mitsubishi use STK393-110...

Your model is the V21 chassis it requires the single IC STK393-110 you will also need 2 5 amp pico fuses. The convergence repair kit is available for your model at which contains the IC, heat sink paste, the pico fuses and the CD with repair instructions and other service info for that model.

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1 Answer

Mitsubishi tv model wt-42311, error code 2-2. what can i do?

2,2 IS short protection and 95% chance it means one of the two pico fuses that protect the convergence IC chips are bad.

This model uses two of the chips: STK-392-110 and you would have to pull the light box out to replace them safely (total parts cost will be under 30 dollars).

It involves getting at the chips and the fuses and replacing them: how much skill do you have?


Mar 25, 2010 | Mitsubishi WT-42311 42" Rear Projection...

1 Answer

Mitsubishi WS-65611 IC's replaced

this set has a self diagnostic feature; when you turn it on and the green light goes out--push menu and device(or input) together for 5 seconds. the led for power should blink an error code. The most common is 2, pause and 2---this means something is shorted. If the set functioned before you changed the stk--you may have a new IC that is shorted--this IC is protected by two pico fuses usually marked as fao4 and fao5----they are about 3 inches behind the IC and are marked 5 a(they are green in color and do not look like fuses) also check all the 3.9 ohm blue resistors in front of the Ic--if any are white in the middle they are gone and the new IC got them. you did not remove the board? you tilted the entire chassis up to get at the IC? take a good look to make sure you did not pull any plugs loose---check for the error code first and let me know what it is. Best way to do this repair is to remove the entire board from the plastic frame---takes a little longer but is safer way to get it done. If one of the pico fuses is blown you will check it just like a regular fuse--an open fuse will suggest short and the set will shut down with 2, pause. 2 errror code.

Aug 18, 2009 | Mitsubishi WS-55809 55" Rear Projection...

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I have a Mitsubishi 55 inch rear projection tv, ws55819 on which the convergance is gone bad. I'm getting a concave picture with multiple colors. Repair shop estimates are $340-420.00 Can I replace the...

Yes you will need to replace both of the STK392-570 Convergence ICs and the two 5 amp pico fuses. You can get the parts at the following link and they provide instructions with pictures that show how to do the repair. Heres the link'

Jun 14, 2009 | Mitsubishi WS-55819 55" Rear Projection...

1 Answer


spay a can of freeze on the vertical ic while it happens if not that ic try others.

i found this on a different page
his set could have a few probems. One common problem on alot of mitsubishi big screens is the surface mount capacitors on the doubler module go bad, but usaully the set stays on but does not have any sound or picture. It is most likely a problem in the vertical. If there is no vertical sweep seen by a certain protection circuit, it will shut down the set to protect the picture tubes from having a line burned into them from just a single intensely bright line being displayed. I have had many a mitsubishi have pico fuses open randomly in the 26 volt line for the vertical and when replaced the set operated normaly. I also had bad solder connection on the vertical output I.C's causing them to short out and open the same pico fuse. There could be oher factors but those are 2 of the most common ones I see. Without actaully looking at the set thats the best I can do. I would say its well worth getting fixed..

Oct 27, 2007 | Mitsubishi WT-46809 46" Rear Projection...

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