Question about Sony KP-43T90 43" Rear Projection Television

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Sony KP-43T90 43 in TV only works with DVD but not with cable or antenna

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  • engineer_ric Sep 04, 2008

    What is the part number for the tuner board?

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Connect cable at RF input and please perform Auto Search in TV Menu to search available TV channels transmission and still no signal reception means Tuner is defective in TV.

Posted on Sep 04, 2008

  • Shahid Electronics
    Shahid Electronics Sep 04, 2008

    Your tv has 2 tuners, main TU151 and sub TU152. Parts numbers are as follows..

    8-598-542-50 TUNER, FSS BTF-WA412 (TU151)

    8-598-430-50 TUNER, FSS BTF-FA401 (TU152)

    Both are mounted on A board and part number of A board is..

    A-1299-423-A A BOARD, COMPLETE

    Picture of Tuner schematic is also pasted here.

    Please post back if you need further help.



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Your Sony KP-57WS520 television has an analog tuner, so you may need a digital tuner or a converter box to continue to receive over-the-air programming.
If you subscribe to a cable or satellite service, your television viewing should not be affected by the June 12, 2009, cut-off date for full-power analog broadcasting. Please contact your service provider for complete information.

Go here for more info:
http://esupport.sony.com/US/perl/model-home.pl?mdl=KP57WS520&LOC=3

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I'll bet you see thin lines moving across the entire picture...they are slanted like this >> \ \ \ \
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Try using your VIDEO OUTPUT off of your Cable box and see if the wavy lines are still present. If they are the Cable box needs swapped with a good unit.

You can also verify this problem by checking your TV with a DVD player...no lines indicate the TV is fine.

If you have problems with the DVD player's picture, then you must have dried out filtering capacitors on the Video board IN the TV set...

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