Question about Sony KV-32XBR450 32" TV

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Sony KV-32XBR45 Problem

TV takes 2 minutes to warm up such that the CRT turns on. Audio begins immediately.

Screen has very green tint -- color is not right and looks washed out.

I have isolated the long turn on delay to the board that attaches to the neck of the CRT (which I shall call the "CRT board"). Hitting it with circuit cooler spray when the TV is off and it takes longer to turn on CRT. I also did the reverse. This morning, I used a hair dryer to heat the board and it came on much faster than if I had not done that. I'm convinced that (at least) the long turn on time is definitely tied to this board.

I'm not sure if this also is associated with the green/washed out look.

I cooled the three 3-pin ICs and they do not appear to be part of the problem.

Any suggestions?

Also, any idea where I can buy a replacement CRT board? The numbers printed on the board are:

1-646-720-23 (on bottom of board) and CMKS-81X (on bottom of board).

Thanks,

Speakout

Posted by on

  • speakout May 28, 2008

    How does one adjust the white balance on this particular TV? I don't have schematics.



    Thanks,



    Speakout

  • speakout May 28, 2008

    We're getting close. The software and Sony jig notwithstanding, what is the actual component that is adjusted to achieve white balance? A var resistor? If so, where might it be located? I do not have access to the software and jig, but perhaps tweeking the pot may get me close. (Otherwise, this TV is headed to the dumpster. I view this as a last-ditch attempt to resurrect this TV and feel I have nothing to lose if the adjustment can't be made successfully.)



    Thanks again.

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Hello Speakout,
You do not need that board. You can resolve this problem by adjusting White-Balance. (greenish picture tone)
I think you have enough technical knowledge how to adjust white balance of this TV.

Posted on May 27, 2008

  • Shahid Electronics
    Shahid Electronics May 28, 2008

    It can be adjusted by software in tv, requires a Sony designed jig controled and connected with PC to access the tv software.

  • Shahid Electronics
    Shahid Electronics May 29, 2008

    Alright, On CRT board, you will see a Var-Resistor named G2, try to adjust it.

    if this Var-Resistor not there, then its located at Fly-Back Transformer (hight voltage area) there you will see 2 controls, one is for Focus and other called G2. hope this info will usefull.

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