Question about Hitachi 51S700 51" Rear Projection Television

1 Answer

Hitachi 51S700 won't turn off

When turned off, unit goes to 'Magic Focus' (focus is now way off), then shuts down. It will immediatly turn back on the picture, but no audio (unit thinks it is off). Magic Focus is set to manual only, yet it comes on every time you turn off the TV.

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  • Hitachi Master
  • 14,553 Answers

Some kind of a problem likely in the magic focus area--is the set showing a error on screen if you engage the magic focus?

One thing not to do is disconnect the sensors inside the screen as that could make things worse......

Posted on Dec 02, 2012

  • 3 more comments 
  • Al Floyd Dec 02, 2012

    SD Tech - There are no errors showing. The TV will auto-run the magic focus on shutdown even though it is set to only do that manually. Also, once the magic focus action has completed, the TV will go black, then the picutre will return but without audio. I'm assuming the TV *thinks* it is powered down. When you hit power again, the TV will go black then return the picture with audio (no magic focus actions). The magic focus button on the TV doesn't work (all the others do).

  • SD Tech
    SD Tech Dec 02, 2012

    Some thing stupid to do here---follow power cord inside the set and look for up to 3 mechanical relays---They are well known to stick shut when should not be engaged---a moderate tap with a screwdriver handle on each will free one if stuck shut---

  • Al Floyd Dec 02, 2012

    I found one relay just past the power cord and gave it a tap - to the left of it looks like a box capacitor (I tapped it as well), but no change in condition.

  • Al Floyd Dec 02, 2012

    that box capacitor (?) is to the right, not the left...

  • jeff smith
    jeff smith May 07, 2014

    Tapped the relay BOOM. problem solved. My relay was stuck. The TV turned off normally after tripping the stuck relay. I have having the same weird magic focus problem where it wouldn't shut off.

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Posted on Jan 02, 2017

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ginko
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SOURCE: TV will not turn off with remote or manually

That means that you either need to buy a replacement remote (or use an universal remote) , or you need to replace the TV IR sensor, that is a small board located inside tv.

Posted on Apr 17, 2009

barbu51
  • 566 Answers

SOURCE: Hitachi 51F500 magic focus wont work, blue has

Sounds like your blue convergence module is faulty along with a few resistors. There is two convergence modules in your set(stk-392-020) and when one fails, the both of them are usually replaced with a matched pair .If you have a good knowledge of electronic you may replace them yourself.otherwise you`ll need the help of a tv repairman. Hope this help. Good luck

Posted on Nov 17, 2009

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