JVC AV-48WP30 48" Rear Projection Television Logo

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Anonymous Posted on Jun 08, 2007

JVC AV-48WP34 I installed new conversion chips stk392-110 and the conversions is all messed up , does anyone know why i could fix this problem? Do i have to go into the menu on the set ?o.k. i putthe new chips in and went to the menu screen when i gt it all lined up how do i save it ? cause when i turn it off and them=n back on it goes back to where it was all messed up ! i also installed a new cap that was no good PLEASE HELP THANKS MIKE

  • rgkern915 Jan 17, 2008

    I am unable to adjust the blue convergance, my remote does not have enter nor does it have select buttons when trying to adjust convergance.

  • Anonymous Jan 18, 2008

    My Convergence on red will not line up on the far middle and bottom right. It is a close a possible to lining up, but those two will not line. The T.V. had a great picture and then all of a sudden went to red shadow.



    Thank you

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  • Posted on Jul 05, 2007
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Please press "enter" after you have adjusted the setting. The "enter" button is located on the top of the remote, the first button below "power" button on the JVC remote

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  • Posted on Jun 09, 2007
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If you are in the service mode, pressing the muting button saves the convergence values to memory.

  • Anonymous Jun 09, 2007

    So are you not in the service menu when adjusting the convergence?

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Anonymous

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  • Posted on Jun 08, 2007

SOURCE: JVC AV-48WP34

MPOP72 One very important servicing note to remeber with this unit module is: If you remove the rear cover while the power is on or plugged in you will destroy all DVI programing inside the DVI (Digital Input Module). The only way to restore the programming is to send that module to JVC. There is a light sensor inside the TV and when the back is removed with the power on the data is electronically erased from the eprom. First turn off the set and remove power cord, then short pins 1 and 2 on the SB connector of the digital input module. Before the rear panel is insterted into the cabinet remove the short on the SB connector. DO NOT TURN POWER ON until the rear panel is inserted into the cabinet. If you have to work inside the set with power on remove the two cables going to the DVI module. That said, if you merely accessed the front panel and changed the convergence amps, re-installed that board, and cannot seem to restore convergence - then you have a secondary problem, probably one or more of the feed resistors on the amp in that circuit have failed. If everything appears okay and you are able to align convergence in the customer menu then the only last step to storing the setup is to press enter and then exit the convergence menu. If the info is still not being stored you still have a problem on the convergence board and probably with a resistor or two. There are a series of 1.5 and 2.2 ohm resistors 1w on that board. Take-out your trusty DMM and test each one for open condition or change in value and replace any suspected. Good Luck Bill

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I have a JVC AV-48WP74 48 in. Rear Projection

Must know basic soldering and have tools like soldering iron,a desoldering pump or desoldering witchs to replaced parts on the tv convergencce board.U have none of these tools devices and never solder bsfore,better hire the tv tech. to do the job.Cost estimate 300-350 for parts and labors.Tries wesite like Tvrepairworld.com,Tvrepairkits.com to buy a whole convergence kit,to do it ur self,if u can?
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I went to JVC companies and a page came up and I selected services and I downloaded the manual.
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You need to replace both STK392-110 convergence ICs, you can get replacements at the following link with free installation instructions and free tech support so you can do the repair yourself.
http://servicemanuals.vstore.ca/
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Chances are there are other resistors open
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you will need remote .. go into menu and turn captions off..thats it! john
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JVC AV-48WP34

MPOP72 One very important servicing note to remeber with this unit module is: If you remove the rear cover while the power is on or plugged in you will destroy all DVI programing inside the DVI (Digital Input Module). The only way to restore the programming is to send that module to JVC. There is a light sensor inside the TV and when the back is removed with the power on the data is electronically erased from the eprom. First turn off the set and remove power cord, then short pins 1 and 2 on the SB connector of the digital input module. Before the rear panel is insterted into the cabinet remove the short on the SB connector. DO NOT TURN POWER ON until the rear panel is inserted into the cabinet. If you have to work inside the set with power on remove the two cables going to the DVI module. That said, if you merely accessed the front panel and changed the convergence amps, re-installed that board, and cannot seem to restore convergence - then you have a secondary problem, probably one or more of the feed resistors on the amp in that circuit have failed. If everything appears okay and you are able to align convergence in the customer menu then the only last step to storing the setup is to press enter and then exit the convergence menu. If the info is still not being stored you still have a problem on the convergence board and probably with a resistor or two. There are a series of 1.5 and 2.2 ohm resistors 1w on that board. Take-out your trusty DMM and test each one for open condition or change in value and replace any suspected. Good Luck Bill
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JVC AV-48WP34

Have you got the cable connected properly and attempted a consumer convergence in the menu? If you've attempted that and are still having the issue there may be other components on the Conv Module that have failed.
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