Question about JVC AV-32120 32" TV

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ONIDA 200D 20'' CTV NO PICTURE SOUND OK ,CIRCUIT USED M57228SP

Posted by sujitkarmaka on

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gopakumarg43

The Knight

  • 76407 Answers

SOURCE: onida 21''ctv picture coming in stamp type

Hello
Replace its Horizontal output Transistor. If the base-emitter junction has a leak inside it, this type of fault will occur. Before replacing it, check the main DC voltage to LOT [Line Output Transformer]. It should come around 102VDC. If there is not this much voltage, check the electrolytic filter capacitor connected across thie supply line to main negative for open or value developed. Replace the same is good. Till there is low voltage found, check the retifier diode that rectifies this 102 volt DC. If all the above are OK and still you get a stamp like raster, check the heat of the Horizontal Output Transistor described above. if it overheats, LOT is defective and should be replaced with same type and number. OK.

Posted on Jun 12, 2011

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Shailesh Parikh

  • 83 Answers

SOURCE: Onida Audioport 21'' CTV no picture & sound

this is video section problum .pls check video mute trangester is sort.
or croma ic is filed

Posted on Oct 20, 2009

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mohan orion

  • 49 Answers

SOURCE: sir,

MOST OF THE 2499 TR IS DUPLICATE .SO YOU USE ONLY OLD TR.WHICVH IS TAKEN FROM OLD CTV BOARD. OTHERWISE YOU CAN USE 25INCH CTV H OUTPUT TR.

Posted on Aug 03, 2010

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Sir, my onida 20xs ctv make high boost transister 2499 has burnt


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1 Answer

Onida Audioport 21'' CTV no picture & sound


this is video section problum .pls check video mute trangester is sort.
or croma ic is filed

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