Question about Sony KP-48V90 TV

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Flash focus is not alighing correctly. the blue color is off.

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If the model number indicated is correct you will need to replace both of the STK-392-150 Convergence IC chips this set uses.

This can be a do it yourself repair if you are handy. The repair would involve getting at the two parts, being able to un-solder and replace both soldering the new ones in.

Total parts cost should on for example EBAY be under 25 dollars.

If this sounds like something you can handle let me know and I will give you basic instructions.


SD TECH

Posted on May 02, 2010

Testimonial: "hi... getting the info on the convergence chips you mentioned below would be great. can you send it to me? morrismmm@optonline.net thx morris If the model number indicated is correct you will need to replace both of the STK-392-150 Convergence IC chips this set uses. This can be a do it yourself repair if you are handy. The repair would involve getting at the two parts, being able to un-solder and replace both soldering the new ones in. Total parts cost should on for example EBAY be under 25 dollars. If this sounds like something you can handle let me know and I will give you basic instructions. SD TECH "

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Posted on Jan 02, 2017

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1 Answer

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Convergence board needs repair, google you model # and see if you can purchase a repair kit.

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My hitachi 53udx10b was supposedly just serviced but the picture is extremely blue. Have tried adjusting picture to no avail. Help.


I am going to tell you a simple thing to do to know what your problem may be.

With the set on turn the color all the way to zero. Go to a channel if you can that is in black and white. What color is the screen?

If the answer is that it is blue in the background whoever serviced the set did not and could have removed front speaker grill and inspection plate behind it; there is a black plastic block with three screen controls (red,green,blue) and 3 focus controls (do not touch the focus ones.)

I suspect if the blue screen is there a slight adjustment of the blue screen down will correct this.

The picture with the color at zero should be black and white or gray. If blue is background color it will also be with color.

This is called gray scale; picture with color off has to be gray or black and white.

Before you rate this solution if you have questions make a comment right here and I will advise you.

SD TECH

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Model #65swx20b the magic focus can<t aligh the blue. picture has blue on side of peoples faces.


This is a convergence problem that can be as simple as bad connections at the convergence ICs or defective ICs. If you can solder, you should be able to fix this yourself. Let me know if that is the path you want to take and I'll provide more details.

Thanks,
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