Question about Sony KP-53HS10 TV

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Older KP-53HS10 I have an older TV bought around 2000. Last year I started to get the red light error. Had a service tech come in he said the problem was the blue tube was going and turnned it up but never turrned up the other colors now the colors are out of balance. Started to do some reading on this the other day and found that he probably adjusted the G2 control so I tried to adjust the G2 control today. While doing this there was a poping sound and a flash on the right hand side. I am assuming that is the blue tube? Being weak adjusting the voltage probably caused it to blow? Now if I turn up all controls all I get on the screen is curved lines I am assuming this is a test pattern automatically generated because the set is in an error state? When I turn down the colors the picture is black. Would that popping sound and flash be the blue crt if so how hard would this be to repair? I am a computer tech so I dont think this would be too hard of a repair if it is just replacing a tube. Is there anything else I should try to make sure I dont spend more money then is neccessary?

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  • ih8lag Mar 11, 2008

    Thanks for your response Al. I further took the unit apart yesterday. I checked the CB and ZB boards nothing appears to be blown on these boards. I may have gotten by lucky. I have found the blue tube through Sony for 77 dollars.

    The big question now is. The service manual is not very descriptive on how to replace this part. Is there a specfic procedure to follow? I do know not to remove some screws as cooling liquid will spill. Other then that the service manual is very vague.





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HI: I think you have some serious problems here. First changing a picture tube is never easy. The yoke is bonded. There are basic alignments on the neck. Coolant containment, etc. Second, it is always recommended to change all three tubes, because you will not get a good gray scale balance. Third: the flash was probably the combo g2 controls shorting out. Also I am unsure what you mean by only curved lines on the screen. This could be a loss of proper voltages, because of the shorted g2`s, or another problem, because of the voltage surge, burning out other circuits.

You are in the range were I would recommend to my customer, not to repair it.


Posted on Mar 08, 2008

  • Albert Nika Mar 12, 2008

    Wow, $77 for that tube is fantastic. First I would test the tube with a CRT tester, to see if in fact it is bad. The flash of light is still going to be a shorted part. and NOT the blue CRT blowing out. With a high voltage meter check the g2 voltages. I do not recommend you undertake a repair, without referring it to an experienced service shop for an estimate. It takes experience to change a tube, when service info is skimpy.




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Sony kp-53hs10 picture is cloudy and 3 colors at bottom of screen red blue and green

Look at attached photo--if it is what you have you have a convergence problem.

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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My TV (Sony KP-53HS10) TV recently experienced color problems. The problem seems to be that the 3 colors, blue green and red seem to be out of synchronization giving the picture a distorted or blured...

The problem might be the Convergence circuit went bad, generally there are 2 chips (part# starts with STK392 - something) that will need to be replaced, it involves de-soldering and soldering some tried doing themselves and made it worst. A local TV shop may charge from $300 to $475 depends on the labor service call and parts.

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I have over 10 years experience in electronic tech support.

I know this isn't what you want to hear, but the problem you've described can't be fixed with troubleshooting. Your TV will have to be repaired. There is a part that has developed a defect and needs to be replaced. If you're still in warranty, the TV will be repaired at no charge to you. The warranty would likely be at least one year from the date of purchase from the manufacturer. If you purchased an extended service plan they will repair the TV at no charge as well.

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I hope I've provided you useful assistance and that this information allows you to make an informed decision as to how to proceed from here. Please be sure to vote on my response. I hope I've earned a good rating from you today.

Please let me know if I can be of further assistance.

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Try getting a new power supply. Replacement SOny flyback 859882800. That part costs $18 and would be the most inexpensive solution. Unfortunately your probably gonna have to do it yourself unless you want to pay huge handling/service fees. Just google the part number and it should come up. Part# : 8-598-828-00
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