Question about JVC AV-48WP30 48" Rear Projection Television

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Picture bowed I replaced the Convergenc IC chips the color is good now but the picture is still curved on the top and bottom

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Re: picture bowed

With tv power on press (062597 exit) on the remote to enter convergence mode

Posted on Oct 24, 2007

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Re: picture bowed

This is called vertical pincushion IMHO.

With a bit of luck you should be able to adjust this from the service menu.


Access the service mode: set SLEEP TIMER to 0 MIN.
While this is still displayed, simultaneously push DISPLAY and

Posted on Oct 19, 2007

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1 Answer

Is this a Convergence IC chip problem?

yes this is a bad ic
here is my tutorial.. most of these use a stk392-120 and i would replace both of them
Let me know if I can be of further assistance.

Jun 14, 2010 | Philips 55PP9352 55" Projection Television

1 Answer

Hitachi 46F500 and there is a blue curved bar

Your TV most likely has a Convergence Chip Failure ( common problem )

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

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

May 15, 2009 | Hitachi 46F500 46" Rear Projection...

1 Answer

Curved picture at top and bottom

if it is bowing from top and bottom your looking at a convergance problem if you keep using your tv soon there will be no picture at all when the board crashes... convergance board needs to be replaced... hope this helps..

Apr 11, 2009 | Samsung HCN4727W 47" Rear Projection...

1 Answer

Phillips Magnavox 60" model ptv835

Recently had same issue and after EXTENSIVE SEARCHING found all three ICs and replaced them. TV works perfectly, also, replaced convergence ICs at same time. The one 16-pin IC for the regulation ckt. is $49.95 the other 16-pin IC is $19.95 and the 8-pin opto is about $10. This price is for a minimum qty. and must have a business for quote.

Aug 29, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Sony kp-48v75 picture arcs at top and bottom

Convergenc IC proble look for and replace all Stk392-XXX

Dec 03, 2007 | Sony KP-48V75 48" Rear Projection...

1 Answer

Uh oh... the colors are curved and wacky

replace the amplifier IC chips for the convergence.  part # stk392-???  could be from 040 to 120..  90% chance that'll fix it.

Oct 08, 2007 | Panasonic PT-47WX49 47" Rear Projection...

2 Answers

Horizontal bow and shadow

Replace convergence IC's--then re-check convergence alignment in servicer mode,if necessary.

Sep 27, 2007 | Philips 9P5544C 55" Rear Projection...

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