Question about Sony KV-35XBR48 35" TV

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Kv-35xbr48 turns on fine nice picture then horizontal lines form distorting picture like interference also is the back hard to take off and put on needs a good vacum thanks for any suggestion

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  • pvxyz Nov 06, 2010

    i found the problem i believe the power supply board ,i found if i lift the back of the board no problem lines gone board must be warped and to diffulcult to replace ill try wedgeing it up and giving it try parts froms sony crt board i found discontinued..

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At first the picture is ok, and then distorted with horizontal lines i thinks. If the horzontal lines are parellel acros the screen, with an inch apart across the whole screen, your tv needs screen adjustments. Screen voltage may be high. look into the crt base also. Change it first. These also not resolve the problem, LOT may be faulty, with respect to screen focus pack. May need replacement. Try first setting screen voltage to a lower settings and observe.

Posted on Oct 14, 2010

  • 2 more comments 
  • pvxyz Oct 14, 2010

    thanks but what is the crt base

  • The Knight
    The Knight Oct 15, 2010

    CRT base can be located on crt board, pluged into the back side of the neck of the picture tube. CRT base means Cathode Ray Tube [Picture tube] base. The plugin socket that gets into connect the picture tube, is soldered to a printed cricuit board which can be located on the picture tube base board. The contacts of connection may be poor along with time. Things that the matter is clear.

  • The Knight
    The Knight Oct 17, 2010

    CRT base means the socket the pluged into the base of Cathode Ray Tume [Picture Tube] which can be located on the picture tube base card atteched to the base of the picture tube. This socket is soldered directly to the bace card. It can be desodered and taken out after pluging out the base card from the base of the picture tube. Usually this one is called picture tube base for ease.

  • The Knight
    The Knight Nov 06, 2010

    As you located the fault point, there may be some loose soldering somewhere it it cauaing power supply regulation section cannot control the output voltage to the main board. Now we are clear that the fault is due to a loose soldering. ok. But you shoud make the board uside down to make any solerings on it. Try it by any way. If you lift and place something under it to make it on that position, sometimes the tv will work temperorly, but it is not a parmanent solution. You should locate the loose point and must solder it. Try it, you can. Wish you sucess.

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