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.



    Thanks,

    Jay

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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.

Al

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.

    Al

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