Question about Hitachi 51SWX20B 51" Rear Projection Television

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Help with project

I also have a 51swx20b Hitachi Projection TV. About 2 weeks ago smelled something burning and blue laser now traces 6 inches to the right. Where should a do it your selfer like myself begin?

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  • scottmallory Mar 12, 2008

    Sorry I don't have a pic and also do not have a service manual. If you can visualize the normal screen with the blue outlining off to the right this is what my TV is displaying.

  • scottmallory Mar 12, 2008

    Slinteriors, thank you for your assistance, to this point as it has been much more helpful than the last person giving suggestion. Can you explain what parts I need to order to cover everything I would need along with a procedure as I am technically challenged in this field? Again many thanks!

  • scottmallory Mar 12, 2008

    Thanks, I'll be in touch as soon as I receive the manual.

  • scottmallory Mar 18, 2008

    Slinteriors,



    Okay, I have ordered and received the service manual. I'm ready to order parts and get the ball rolling. Your next step?



    Thanks,

    Scott

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  • Hitachi Master
  • 8,617 Answers

Can you post a picture of what the picture looks like, and do you have the service manual for this model?

Posted on Mar 12, 2008

  • 2 more comments 
  • Sonny Berry
    Sonny Berry Mar 12, 2008

    That sounds like a convergence IC failure, however you shouldnt have smelled any burning. You can try replacing the convergence ICs and also check the resistors right next to the ICs they may have burned open if the ICs went out.

  • Sonny Berry
    Sonny Berry Mar 12, 2008

    The ICs you will need are STK392-110 0r 120s either will work the 120s are better. You will also most likely need at least one of the resistors that power the ICs (burning smell) I can post a link where to get the service manual emailed to you for 15.99 you will need that to look up the resistors so you can order the right resistors. Get the manual then let me know and I will explain how to find the resistors on the board then you just have to look up their ratings in the manual then I can post a link where to get the parts. Total parts should be under 20.00 so you will save literally hundreds of dollars by doing the repair yourself and it takes about an hour to relace the ICs and resistors. Here is the link for the manual I had them move it to their front page so you could find it. I am one of their support techs.

    http://servicemanuals.vstore.ca/

  • Sonny Berry
    Sonny Berry Mar 12, 2008

    just let me know and I will walk you through it.

  • Sonny Berry
    Sonny Berry Mar 18, 2008

    First check the resistors right next to the conversion ICs to see if any are open. You should notice some discoloration in the middle of the resistors. Check them by unsoldering one leg of the resistor to take it out of circuit then check it for resistance. If it isnt within 5 % of what the manual specs it out at replace it. Electronix.com will have the ICs you need. Radio shack will have the resistors. I would recomend getting a de-soldering iron at radio shack it has a rubber bulb on it and it makes getting the ics and resistors out very easy.Remember to put some heat sink compound on the back of the new ICs. The compound is at radio shack for 1.29 also. Then just solder in the new ICs then check with a magnifying glass to insure none of the pins are bridged with solder. I always label the wires I remove with a letter so I know where they go when I reassemble. When your finished the magic focus should be all you have to run to put your convergence back to normal. Let me know if you need any additional info. And Good luck on your repairs.

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