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Two picters, round on top and round on bottom

I see two pic and round at the top and bottom different colors from what i can find it may be the pico fuse and / or convergence circuit
thank you robert

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  • life4rkids Nov 28, 2008

    model hc-p4752w i see two pic's and round at the top and the bottom with different colors

  • life4rkids Nov 28, 2008

    mrgreemz,

    what are the cost of those parts and how hard are they to replace them



    thank you robert

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  • Master
  • 962 Answers

You are right. Check the convergence ICs and resistors.i don't know the resistance values . But that seems to happen a lot with Projection TVs

Posted on Nov 28, 2008

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Kd-46wt500 sony big screen colors dont line up is projectors goin out picture on tv is blurry pic looks stretched out as well


Can you verify the model number and see if its A KP46WT500 model? If so chances are just the convergence Ics ( stk 392-560 ) and pico fuses are the problem. There are 6 3.5 amp pico fuses directly beneath the heat sink fins on the D board ( where the Convergence ICs are located) Check those six pico fuses and also two 5 amp picos on the G board ( where power cord plugs in) if any of the picos on either board are open then the Convergence ICs will require replacement.

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Picture doubles and looks like 3d


Your TV most likely has a convergence 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

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Colors have separated. and top and bottom af pictures are bowed. i have a sony kp-46s55. its about nini years old and it was free. currently the colors are separated and the top and bottom of the pict


nbad convergence ic , this need to be done by a profecional tv tech , because need to check for the pico fuse and resistor around the area

May 08, 2009 | Televison & Video

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HCM653W color convergence off


Ck low ohm resistors 3.9 omh and pico fuses they look like resistors but they are green or yellow 5amps, 6amps,sometimes after replacing STKs there is bad resistors or open pico fuses.

Dec 22, 2008 | Samsung HCM653W 65" Rear Projection...

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Samsung:pcl4515r


You may still one more resistor opened , samsung most of the time its 2 low ohms but can be 3 it will be same value as other 2. I think they are 2.7ohms or 3.9 How to Enter Service Menu for convergence Turn TV off Press Mute 1-8-2-power now you should be in convergence use vol- and vol+ to select an item Use mute and menu to adjust when done Press ADD to save adjustments made.

Dec 12, 2008 | Panasonic PT-51HX42 51" Rear Projection...

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Hitachi 50H72 Convergance issue


they look like tiny resisters,you check them with an ohm meter and they should show little resistance, have you checked the resisters in the convergence area there should be about 6 of them 1.6 ohm to 3.9 ohms.

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2 Answers

Picture Problem , Sony Projection TV


Your TV most likely a convergence 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Oct 01, 2007 | JVC AV-56WP84 56" Rear Projection...

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Sony kp57hw40 convergence not working


Take the speaker grill off the front, in the center there is a thin plyboard, unscrew it, down on the bottom there is 6 adjusting screws X X X X X X B G R I simply turned the screw, (the 3 screws on the bottom, the 3 on top are for focus) just a little counter clockwise marked B and G, that was the 2 color curved lines I had on my tv, this fixed the problem, not my idea I read this on another person with the same problem.

Sep 24, 2007 | Sony KP-57HW40 57" Rear Projection...

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Changed chips and now no picture


When I changed the STK392 chips I had no pic on startup also. I don't know why but I found 2 6.3 amp pico fuses blown on the front edge of the power supply board. They are marked on the bottom of the board. I had to fudge some pigtailed AGC size fuses & the high voltage & video started..jim

Aug 29, 2007 | Toshiba 43HX70 43" Rear Projection...

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Convergence problem


Check any/all fuses devices in power supply,glass type as well as soldered-in pico fuse type.Beyond that, repair technical help needed.......T.

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