Question about JVC AV-27230 27" TV

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The sound and everything works great but the picture is just a thin line across the middle of the screen.

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This is a somewhat older set but it is a common problem and usually easy to fix.

Set uses a vertical output IC chip---7-13 pins and it is black and fairly small and will have number like LA7838 etc on the front of it (most LA series chips are for vertical. It is attached with a screw to a small metal plate to keep it cool (called a heat sink).

9 out of ten times the problem is the solder connections on the bottom of the board where it is soldered in have come loose from heat and age.

Once the board is out--10 minute job, I have done hundreds of them in my career.

If this told you something you did not know rate this solution as very helpful as I do this here for free.

If you have questions make a comment here and I will assist you.

SD TECH

Posted on Aug 21, 2010

  • kycsoccer2 Aug 23, 2010

    I've got the back off of my tv. I've found two chips that are mounted like you mentioned. However neither of them have the number you gave. One has LA7830 and the other LA4446. But when I look at the bottom of the board it doesn't look like either one is soldered in. It looks like they're just pushed into the board. Any suggestions would be appreciated.

  • kycsoccer2 Aug 23, 2010

    I've got the back off of my tv. I've found two chips that are mounted like you mentioned. However neither of them have the number you gave. One has LA7830 and the other LA4446. But when I look at the bottom of the board it doesn't look like either one is soldered in. It looks like they're just pushed into the board. Any suggestions would be appreciated.

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