Question about Sony FD Trinitron WEGA KV-36HS500 36" TV

4 Answers

Rolling vertical Line

I have a 36" Sony (KV-36HS500) that usually has a crystal clear picture, however, lately I'm getting a faint vertical line that continually rolls across the screen in the background. It's more pronounced when the screen background is dark. I have observed it while playing DVD's and while watching satellite TV, so I'm pretty sure it's the TV.
Any clues as to what this could be?

Posted by on

  • gardian3 Sep 07, 2008

    Thanks! I will try grounding the satellite coaxial through the power strip and let you know if that works.

  • gardian3 Sep 08, 2008

    I tried grounding the satellite coaxial via the power strip, as suggested, but the problem still persists.

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4 Answers

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  • Master
  • 6,966 Answers

Hi,

Based on your post/description, it would seem to be AC hum riding into the video input signal. Initially, a couple of ideas you could try:

  • change the wall outlet where the Sony is plugged in;
  • use a surge protected and filtered power strip. This is a multiple outlet with built-in filtering;
  • plug in the video of either the DVD or Sat receiver into another Video INput;
  • remove the AC plu/connection of the DVD when watching Sat and/or vice-versa;
  • change your Audio/Video cable;
  • remove any other electronic device(s) near the TV such as cordless phones, clocks, cellphone chargers, lamps with electronic ballasts;
  • Use an appropriately rated AVR, something similar to those used in computers.
If all else fails, it may be necessary to open the Sony and perform diagnosis. This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Sep 08, 2008

  • Louie  Role
    Louie Role Sep 16, 2008

    Hi,

    Any updates?


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  • Master
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If Capacitors C6590 and / or C6503 (1200MF 250V) got leaky in power supply board this noise bar appear on screen. If you have know-how of tv repair, please check above said capacitors.
Regards,

Posted on Sep 06, 2008

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HI if you can see my Comment (please Rate ) FIxYa

the lines being present during video playback only also means the problem is likely in the "jungle chip" as previously reported. The fact that it shows up only when in video input will make it easier for the tech to locate the problem, so be sure and tell them this is the case when you describe the problem.

You may get lucky and find that it is a simple capacitor that is going bad for which the replacement cost is only a few dollars, but don't bet on it. More likely a major chip will need replaced or a board for which the cost will be as stated.

Posted on Sep 06, 2008

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  • Sony Master
  • 13,433 Answers

Hey,

have a look here, a similiar disscussion:
http://www.neogaf.com/forum/showthread.php?t=317424

Let me know how it goes.

Posted on Sep 06, 2008

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