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Audio problem on Hitachi 42PD9700U: Sound disappears after half hour

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  • cyrilrossign Jul 19, 2008

    Yes, I have the same problem since yesterday. Sound would work fine for 30 min, then stop working for 10 min and comes back. When sound does work, the speakers make a low static noise.



    Did you manage to fix your issue?

  • Kevin Horne Jun 26, 2013

    Did anyone fine a cure for this fault or what component was causing the problem?

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1 Suggested Answer

angel_hodges
  • 28 Answers

SOURCE: Hitachi 42PD9700U, has a white coat covering the

Are they a lot of white dots* ??? kind of like static on the screen?

If you are getting many white dots, enough to cloud part or most of the screen, it can be a dmd chip gone bad!

Posted on Jul 18, 2014

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Hitachi 42PD9700U, has a white coat covering the inside of the outerglass, any ideas what this is ?


Are they a lot of white dots* ??? kind of like static on the screen?

If you are getting many white dots, enough to cloud part or most of the screen, it can be a dmd chip gone bad!

Jul 18, 2014 | Televison & Video

1 Answer

After a half hour of operation, the picture begins to shadow.


These sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks Distorted/3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking screen
  • White looking sceen
  • Halos around objects
  • Red/Orange looking

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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Try doing system restore and go back to one day previous to the windows update performed.

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all job has 3 month warrenty take it back ask them to repair it properly, it is very technical repair and risky becouse of high voltage involve with set. tech would trace the sound wave form, as to why it disappear after certain time possibly a leaky cup or fualty componet some where on sound line.

Aman

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If it is a Hitachi 60V500 LCD projection TV, then I would suspect the lamp being the problem.

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