Question about JVC AV-27530 27" TV

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Half a screen

Hi, I own a JVC AV-21SX2EK TV and only recently the screen has dropped to about half way. It sort of flickers there and may move back towards the top with a tap on the side but invariably moves back to about half way again. Any ideas? Dan

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  • Daniel Daniel Jul 07, 2007

    Fab! I can solder but can you tell me where the ID is?

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  • 398 Answers

The solder joints have cracked on the vertical output IC. If you have soldering experience you can resolder them yourself but if not then let a qualified tech handle it for you.

Posted on Jul 07, 2007

  • Mike Longo
    Mike Longo Jul 09, 2007

    Look at the jack with 4 wires going up to the yoke, the large set of coils on the neck of the picture tube. 2 wires are for horizontal and 2 are for vertical. Look at the bottom of the board and follow where those 4 wires go. The 2 horizontal wires will go towards the flyback transformer and the large horizontal output transistor. The other 2 wires will go toward the vertical output IC. Resolder the pins of that IC and while you are at it, resolder the pins of any other IC or transistor that is mounted on a metal heat sink, as well as any other solder joints that look discolored, cracked or weak.

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Here are some of the most common symptoms and example photos of a convergence problem

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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



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