Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

1 Answer

Red convergence still won't move L or R

I switched the new ICs and now the same problem exists, the red will not move left to right, only up and down.

I am desperate for help at this point...

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  • 7 more comments 
  • thehumanlynx Apr 15, 2008

    842 looks smoky. I think that is the problem.

  • thehumanlynx Apr 17, 2008

    842 was the culprit. I switched it out and it is working now. The only current problem I have is that everytime I turn the tV back on after its off, the convergence is all screwy. After a minute of manual convergence it looks good again.

    Any idea why it would be doing that?


  • thehumanlynx Apr 17, 2008

    press muting once? or press and hold

  • thehumanlynx Apr 17, 2008

    Hmm, I tried it both ways on the convergence screen and the main screen and it keeps messing up.. upon restart

  • thehumanlynx Apr 17, 2008

    No I did not.
    Do i Need to unplug and push that button?

  • thehumanlynx Apr 17, 2008

    ok. I will keep the TV on, push that button, set the convergence manually, hold down "muting" and it should save?

  • thehumanlynx Apr 17, 2008

    I don't see a button. I guess I'll have to pull the board out to see it

  • thehumanlynx Apr 17, 2008

    no button that I recognized? idk

  • thehumanlynx Apr 17, 2008

    I hit reset on the convergence menu. That seemed to do it.

    Fixya! thanks for the help


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Check the following resistors. you need to lift one leg of each resistor out of circuit to check them. R803, 806, 805, 834, 837, 839, 840, 844, 842, 843, 847, 846 one or two of them may be open.

Posted on Apr 15, 2008

  • 2 more comments 
  • Sonny Berry
    Sonny Berry Apr 17, 2008

    After setting the convergence you have to press the muting key on the remote to save the settings that stores the settings in the TVs processor

  • Sonny Berry
    Sonny Berry Apr 17, 2008

    Just hold it for a second that should store the settings

  • Sonny Berry
    Sonny Berry Apr 17, 2008

    did you press the service button on the convergence IC board before resetting the convergence after replacing the ics?

  • Sonny Berry
    Sonny Berry Apr 17, 2008

    No just remove the speaker grille the button is right next to the ICs just push it once then set your convergence and when finished try pressing the muting button, that should store the settings.


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