Question about JVC LT-42X579 42 in. LCD TV

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My tv shown no pict just a blue screen - JVC LT-42X579 42 in. LCD TV

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I can't tell you exactly what is wrong with it without more detail but usually that means there is no signal coming to your tv from your input device. Try to change the cable from your video input device.

Posted on Feb 21, 2012

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Posted on Jan 02, 2017

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1. check your antenna if you are using one. Autotune
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1. could be the crt itself as a tube with dfective phosphure wil do this

 

2. could be the vertical ic on the crt board

 

3. could be the focus pac.  located in front of tv with 6 adjustment knobs on it.

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