Question about Mitsubishi WS-55819 55" Rear Projection Television

1 Answer

Mitsubishi ws55819 has no picture

Greetings,
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.

Thanks

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  • 4 more comments 
  • 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.

    Thanks

  • 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

    Greetings,

    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.



    Thanks

  • 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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  • 18 Answers

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


10_4_2011_6_08_57_pm.jpg


10_4_2011_6_09_50_pm.jpg


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

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1 Answer

JOESTV


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..

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