Question about Sony KP-53HS10 TV

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Sony KP-53HS10 The picture was perfect and all of a sudden the green bowed at the top and bottom of the screen, I am unable to bring it back with the auto convergence or the manual convergence. I have replaced the IC on the CG board but the problem persist, the green will not move when I try and do a manual convergence. I have seen some other post about fuses, for some similar models, I would like to know if there is anything else I should be checking.

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Re: Sony KP-53HS10

Tim when you changed this ic did you look for blown fuses check all fuses and see if you might have what is called a pico fuse

Posted on Nov 15, 2007

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Re: Sony KP-53HS10

You said in your post you replaced the IC on the CG board. I assume you mean that you replaced the STK392-020? If so did you measure the value of the 2.2k feed resistors just in front of the amp? Assuming you've done all that and everything measured fine then I would suggest a corrupt eprom located on the BM board (about 4x6 inch board that plugs onto another larger one). The complete baord is about the two hundred dollar range and one this old 4:3 aspect ratio model it's probably not worth all the hassle. It would be about a 4-6 hundred dollar repair in the shop, including parts, and to do it yourself would be nearly impossible for all the manual adjustments you would have to add back in after the repair.
You would also need to order the jig from Sony for a grid patter to follow and if you're not used to writing in hex to reset the pattern I assure you it would be a project that could last you all winter...
On the other hand, if you don't mind spending the 4-6 hundred call around and see what off the cuff estimates a shop will give you for doing the work.
Hope this helps.

Posted on Nov 13, 2007

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Re: Sony KP-53HS10

Is there a speaker near it or anything that might have a magnetic charge? Magnets really faul up a screen.

Posted on Nov 12, 2007

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The KP-53HS10 uses two of the STK-392-020 convergence chips.

Both will need to be replaced and the set adjusted--parts cost on ebay is less than 20 dollars--repair consists of two things--getting at the parts and then replacing them--chips are soldered in so you need to be able to un solder them and solder the new ones in.


If this has helped out, rate this solution as I do this here for free.



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