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

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56" jvc av-56wp74 only one stk ic turns on

Changed both ic with stk392-150 only one turns on swapped around so it not the ic's checked all resistors replaced about 4 used ic in diff. set works fine order 2 more installed and have the same problem any ideas??

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  • mrdane3263 Jun 19, 2009

    Can it be repaired?

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There is any issue with ic.check it.
Check all register diode trnsistor gives proper out put.
Also check integrated circuit working fine.

Posted on Jul 03, 2009

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AV-56WP74 the convergence is off. blue is way out!


You will need to replace the Convergence ICs and resistors you can get the JVC repair kit called the AV48WP74-65WP74 convergence repair kit from www.tvrepairworld.com which contains the ICs , resistors and the CD with instructions,

Sep 23, 2010 | JVC AV-56WP74 56" Rear Projection...

2 Answers

Projecting double images


When convergence output ICs got failed, tv shows double image or 3D like picture. Replace convergence output ICs in tv to fix the issue. Local tv repair shop will replace it for you.

Jul 07, 2010 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Bow 4 side


check for 2 STK 392-110 and fuses resistors around them. Put new heat sink compound with the new STK.

Apr 28, 2010 | JVC AV-56WP74 56" Rear Projection...

2 Answers

JVC AV56wp74 convergence. Resistor before ICs?


It's recommended to replace all the defective parts first because if you only replace the defective resistor, it might burnt again if the convergence IC is shorted internally. I would also suggest to measure the other low value resistors with multimeter.

Oct 30, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

I have a JVC AV-56WP74 Rear Projection HDTV Ready Television...I had a problem with the convergence with dual pictures on screen...I replaced the convergence card with 110's.....This fixed the screen...


The STK392-110 are the stock ICs for your JVC. Chances are one or more of the feed resistors are bad. JVC TVs will usually have at least one bad resistor when the original ICs fail

Sep 06, 2009 | JVC AV-56WP74 56" Rear Projection...

1 Answer

I ART PRO JVC 56


You will need to replace the convergence iCs there are two of them they are both STK392-110 Ics you will also need the JVC convergence resistor kit. You can get the ICs and resistor kit at the following link and they provide free instalation instructions with pictures. Heres the link.
http://servicemanuals.vstore.ca/

Jul 26, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Double Vision ...w/waves on top/bottom too much green.


1024x768 Normal 0 Convergence


When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

calgaryconvergencerepair.weebly.com/convergence-explanation.html

Good Luck,

Easyab

Jun 05, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Just a resistor?


R842 is off of pin 18 of IC804 which controls the red convrgence yoke. I would recomend changing both STK392-110 Ics as well as checking the other resistors R842 is a 2.2 ohm 1 watt metal film resistor. let me know if you need more assistance.

May 30, 2008 | JVC AV-56WP74 56" Rear Projection...

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