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Re: Convergence problems on AV-48WP30

Eric Posted May 28, 2005, in response to:Mark Venable

Excellent diagnosis by Carlos. IC804 controls red convergence. But in time IC805 will also fail as well. Replace them both with STK392-110. Also, check for cold solder joints in the vicinity of these ICs. If you want a schematic for this unit e-mail me. Eric

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72 comments, pages:   1 2 3 4 6 7 8 »

    I have the same problems on my jvc screen can you please forward the info to my email address.. thank you

    Comments 2, Last comment by roncris77 Oct 12, 2010

    I have a jvc av 48wp30 rear projection screen television. About 5 months ago the convergence went out so I had a tech come out and replace the convergence IC's, he used two stk 392 110's. A week ago ago the screen got an hourglass shape with the top and bottom screen bowing badly coupled with double vision look on screen. I used the remote to attempt to adjust the convergence but although I could ge the arrows to move, i was unable to get the arrows to move far enough to get them lined up properly. Then just a few days ago after the set had been on for about 10 minutes it made a popping sound and the screen went dark. The blue power light continued flashing so i unplugged the set. I ordered two more of the stk 392 110 convegence ic's online and received today. I carefully removed the old IC's and very meticulously reinstalled the new IC's. I even used a magnifying glass to make sure all new solders were secure. The screen now lights up but i still have the convergence problem and when i attempt the use the remote to adjust the convergence the arrows won't move at all. I have looked online to try to remedy the situation but have not found anyone with these exact circumstances. I am not a techie by any stretch of the imagination so in laymans terms can someone advise me on what they think the problem may be? Any help would be greatly appreciated.

    Comment 1, Last comment by James Jun 08, 2010

    Hi Eric, could you please send me the schematics for the JVC 48WP30 TV? as I am having trouble with the convergence I had the same trouble a year ago and paid a tech to fix it now I am having trouble with the blue and green color and am unable to adjust it the convergence I would like to fix it myself also would you happen to know where i could purchase the parts to fix? any help would be greatly appreciated Lee

    Comment 1, Last comment by Kris Mar 12, 2010

    HI, I'd like to have a schematic/service manual. I'm having blurry images and red wash on some of my screen cheers tony

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    Hi Eric, It seems that you are the resident expert. If you could email me the plans and let me know if this is something that I can do myself I would greatly appreciate it. Thanks Jeff

    Comments 2, Last comment by audrey hallinger Mar 05, 2010

    Hello i have a jvc av-65wp74 when i go to the convergence screen the red line wiggles if that makes any sence if you possible have a scymatic for this one i would realy be greatfull i have read alot about irc resistor if that is causing the prob can i replace it thankyou for any help

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    hello this is roy. i am too having a problem with red streaks on my jvc tv. would you send me that schematic on this unit thank you

    Comment 1, Last comment by Ashton Jan 25, 2010

    Having a red convergence problem with a JVC AV-65WP74. The red will not adjust side to side, have a big red shadow over the entire screen.

    Comment 1, Last comment by Ediberto Jan 20, 2010

    Please send me a scematatic

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    I replaced my 2 stk392-110s and while doing do noticed resistor at r842 is burnt. I can not tell what resistor I need. Will you email me schematic for convergence board so I can figure it out.

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