Question about JVC AV48P777 Television

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I need to know what the focus panel is called'it has six knobs tuner?I dont want to pay for person to come replace cause they burnt me for 125 and my buddy told me that it was that tuner piece.anyone know part number or specific names

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6 knobs piece is called Focus Block and it is necessary part of rear projection TV that has 3 picture tubes to project picture on front screen.

Tuner part is covered with metal shields and usually has one Antenna In pin.

Click Focus Block to see an image (for reference only)
Click Tuner for its image, as reference.
Thanks.

Posted on Oct 03, 2009

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Posted on Jan 02, 2017

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You need to turn down the screen voltage for the blue and red CRT. I don't remember if the focus block is in the front or in the back of the tv on this model. Most projections have them in the front.

You could check the back access panel and look for a black box with six knobs as descibed in step 3 below. This is what you are looking for.

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hi there it might b a little late with this as u posted this in may of 08 but my recent years of tv repair may help it could b the tuner in there older tv set had a similar problem with the tuner try opening tuner box it may need unsoldering but once in check all grounds for bad solder joints and resolder if needed the blue screen u see is normal when no signal input is found making it most likely the tuner.

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