Sony FD Trinitron WEGA KV-34HS420 34" TV Logo

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Anonymous Posted on May 07, 2014
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KV-2192M3 sony tv model display not there but sound perfect

The tv is alomost 15 years old but picture is very blurred but sound is good

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gopakumarg43

The Knight

  • 76851 Answers
  • Posted on Nov 27, 2010

SOURCE: No Display, no sound- not working, showing dead.

Hello
Check the input fuse first. If it is blown, there will be some short inside the power regulator circuit. Usually Sony sets uses STR regulated power supply. You can see this STR, and Ic, screwed onto a heatsink. Replace it with a same type and number. Before replacing the STR, check the diodes used in that section for damage, mainlu zener diodes. They might get shorted along the blowing of the STR. Check that section throughly before resoldering the new STR.
If any further assistance you needs, get me through Fixya. Ok.

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