Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

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Changing IC's When I was Changing The Ic's in the convergence board I think i may have ruined the board when I was desoldering. The pad where the pin of the IC makes contact on the bottom came off with the solder. Any Solutions? or anywhere I can Get a new Board?

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You have to take a thin piece of wire and solder it from the leg of the ic that it was suppose to be connected too and follow the trace and find where theres a good connection where you can solder it too or scratch the trace and solder it to the new area on the trace.

Posted on Jan 15, 2008


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I have a Visteon sd 8300 but I got no sound it is in a Grand Cherokee

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1 Answer

Hi, my rear-projection TV (LG 56NZ23RB) initially had problem with convergence. I bought STK ICs, desoldered one and resoldered a newly bought IC. I tested it, but heard a chirping sound and would not...

There are several other components near the Convergence IC's that usually need replacing. These are fuses that look like resistors. There are also some resistors that can go bad also. You may have a solder bridge on some of the pins on the IC too. It's easy since the pins are so close to each other. Shopjimmy. com has repair kits that address your problem

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When you try to turn the tv on, all you get is a blinking red light, if you unplug for awhile, sometime it will come on.

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1 Answer

Green out-lines on tv images mitsubishi wt-42313

Iff it's more or less like a green shadow to the picture,then you have a convergence IC issue. This is 99% of the shadow problems.

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If you think you can do this yourself then you will need a soldering iron and desoldering braid.

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1 Answer

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Most IC's on circuit boards these days are of the surface mount variety. You will need special Desoldering Equipment to remove these chips, especially the one wth 100 or more pins, the type of equipment used in this process heats all sides of the chip at once while a small suction that grabs the chip for removal. Now the SIP chips (Single inline package). chips which usually consists of less then 20pins can be removed with a desoldering gun such as the HAko 880 desoldering gun. Or you can use a standard soldering iron and solder Wick, that can be found at Radio Shack under Soldering Braide).. These procedures are common for all IC replacement. I am asuming you are trying to remove the Convergence IC on this model, The two large Black one labeled STK-392-110, the correct and easy way to remove these is to remove the entire board from the unit and remove the two screws holdinf each one in place, Unsolder the pins of each one and remove the IC, reverse this process to reinstall them. Good soldering technique is critical here as you don't want to bridge pins together causing yourself more problems. Double check your soldering and Double check it again.

Thanks :
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1 Answer

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1 Answer

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Keep us posted.

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1 Answer

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