Question about Mitsubishi WS-65869 65" Rear Projection Television

1 Answer

Mitsubishi WS-65819 2002 rear projection

When you turn the tv on there is no picture on the antenna a or b channels sometimes there is audio other times its all just snow noise but no picture. this last for somewhere between 1 min to 5 min and then the picture comes on. sometimes it will go on and off during this time. If you use an input such as a dvd or any other not utilizing the antenna a or b input the picture comes right on no delay at all. WE usually watch a dvd while waiting for the antenna inputs to work. tried a/v reset and turning power off. Perhaps its a input problem. i did take the screen off and dusted and removed cobwebs from circuit boards but no luck. what do i look for for ?

Posted by 65819 on

  • 1 more comment 
  • 65819 Oct 03, 2007

    anyway to isolate any of these solutions. voltage check visual or just try a new one?

  • 65819 Oct 03, 2007

    The tv works fine after you let it "warm up"

  • 65819 Oct 11, 2007

    i opened the back and found that if i jiggle the metal boxes after the antenna modulator the picture comes on.  The piece Im looking at is after the metal piece that the antenna cable hooks to.  it attaches to the rf modulator and then goes to the circuit board. I moved the piece back and forth and it is was working good but then the other day it started doing it again.Is the electical piece bad or is the solder joint just loose to the board?  Thanks for all the help

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Vista Electronics

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1)possible bad RF modulator (the small box the A or B signal first goes thru) 2)Bad tuner (mounted on signal board) 3)or missing voltage to run tuner You could replace signal PCB,but that gets a little pricey.

Posted on Oct 03, 2007

  • Vista Electronics Oct 03, 2007

    From a cold start,gently tap on tuner to see
    if problem cuts in/out.

    Many of my customers do not use antenna inputs==
    preferring component video,s-video or composite video for superior performance.Generally called
    a tuner by-pass==saves money to be spent elsewhere.!!

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