Question about Toshiba 65H80 65" Rear Projection Television

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My Toshiba 65H80 has red convergence problem. It

My Toshiba 65H80 has red convergence problem. It can only move vertically, but not horizontally. I replaced the convergence IC's after reading some posts, but still did not fix the problem. Can you recommend what to look for next?

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  • Anonymous Mar 17, 2014

    toshiba 65h80 screen replacement

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You may have cooked your new IC's
I am working on the exact same problem with the same symptoms. Make sure the tv is unplugged for at least 5 minutes before poking around. The power cord can be unplugged from the power board and removed to keep anyone from plugging it in while you are working on it.
Check the output resistors that are beneath the heat sink on the left side of the board. There are also fusible resistors, like #7711, on that side.
Check fuse 853 on the Power board. This is the board on the left when viewed from the back of the TV. You can remove both boards in the carrier by carefully unplugging all connectors, noting their locations and routing.
To remove the high voltage wires from the splitter, mark them for position then grasp the boot and turn counter-clockwise about 10 degrees to unlock them and then pull up while holding the High voltage splitter. The small high voltage wire can be removed from the flyback transformer by pulling hard while holding the flyback.
STK392-110 can be replaced with STK392-120, STK392-180, STK394-160.
I have found most of the parts at newark.com. Also check out this site for some very good info: http://www.hometheatershack.com/forums/diy-repair-maintenance/5600-crt-based-rptv-convergence-repairs.html
btw: I am not affiliated in any way.
Make sure that while you have the boards out you look for any bad solder connections. A lot of problems arise or return because of this.
I hope this helps, I have been doing a lot of searching to get this info and hope it helps you.

Too many people want to trickle the info and pretend they are giving you gold. A few hobbyists or people that can't afford to pay $300+ for repairs are not going to hurt their business.
Be safe and share knowlege freely!

Posted on Mar 02, 2010

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Posted on Jan 02, 2017

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1 Answer

The picture is warped red & blues distorted


Your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless. They will be right next to each other.

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My picture is doubled on my toshiba TN50V71 as if there is a shadow behind everything? Please help!


hi, sounds like a convergence issue. try this...
  • Look through your manual. Your manual will always give you the most specific directions for your particular model. Look for an "adjusting convergence" or "set manual convergence" section.

  • Enter the menu on your TV. Use the remote control and bring up the menu.
  • Choose "Convergence." This may be under "Picture Settings," "Function" or "Advanced Options."
  • Select a color. You will have red, green and blue to choose from. Do each one, starting with red.
  • Press "Enter." A crosshair pattern will appear on your screen.
  • Adjust vertically. If there is a horizontal red line visible, press the up or down arrow keys (or channel up or down) to adjust the convergence until the line is superimposed on the horizontal-center line of the white crosshair.
  • Adjust horizontally. If there is a vertical red line visible, press left or right (or volume up or down) to adjust horizontally. Do this until the line is superimposed on the vertical line of the white crosshair.
  • Save settings. It is important to save your settings when you are done, instead of simply exiting the menu.
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    Toshiba projection tv model 57H82 color convergence is off. tried the TouchFocus and get and error. tried manually but the red will only move up and down. i need it to move left and right.


    OK, the problem is one of the STK392-110 convergence amps has died. It is rare that both die at the same time, so either vertical or horizontal will go out, but not both. Also look for an open fusable resistor near said IC.

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    My tv needs to be converged but i can't


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    CRT Rear-Projection Red Vertical Alignment


    You may have a convergence problem. Here are some of the most common symptoms and example photos.

    • 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.
    701cb04.jpg
    77ea520.jpg
    f0900cb.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.


    2c07611.pngSolution


    You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

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    Does the blue and red crosses move at all ... eather vertically or horizontally. if they move at all then it may not be the chips.. could be a resistor. if the crosses dont move then it probally the ic. these chips run about 7 to 45 dollars apeace depending on type. at our shop we charge around 125 to put in.

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    Probably the red convergence output IC has failed. The chip is basically a stereo amplifier that serves as a horizontal amplifier and a vertical amplifier. I suspect the vertical part has failed and is not uncommon. Should be generic STK392-150's or maybe STK392-110/120 I believe. By the way when the line moves up and down that means the vertical is working when it moves side to side the horizontal is working.

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