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F27202ft no raster,or sound

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Re: f27202ft

TV will not turn on in the ordinary plug in, but will turn on in a different outlet....

Posted on May 07, 2008

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Sony lcd no raster no sound

Check and replace damaged component/s at its main power supply regulator section circuit. If you wish to get some details, check the site linked here. Pull up older posts. Check the site in 'Mosaic' view. It will make search easy.

Jan 20, 2014 | Sony FD Trinitron WEGA KV-36FS120 36" TV

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No picture only raster

It sounds that the 'chroma decoder' section of the IC has damaged. There is no other way than replace the IC.

Jan 03, 2013 | Standard (CRT) Televisions

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KP-61HS30 has sound but no video

1) the problem you have is lack of raster , the problem in tv has 4 phase 1) raster 2) picture 3) synch 4) sound.
2) test the power supply , check the horizontal output +125vdc ,vertical output from +80vdc, +al other circuit +12vdc, if there are missing fix it, see the diagram attached.
3) TEST the signal from tuner,i-f, detector, AGC

Jul 12, 2012 | Standard (CRT) Televisions

1 Answer

Picture cutting after 5-10 min-raster OK sound OK

The vertical ICs on this particular model have by now bad grounds. You will have to resolder this, and check any and all grounds on ICs mounted on heat sinks! Bad grounds are common and plentiful. Good Luck and thanks for asking!

Jul 04, 2010 | Sony Standard (CRT) Televisions

1 Answer

We only see a thin vertical line on our RCA F27202FT t.v. Is this repairable?

This is a line collapse if it's vertical & should be repairable if it's something simple like a poor soldered connection in the line output stage.

Jul 12, 2009 | RCA Standard (CRT) Televisions

1 Answer

Sharp 32'' tv -no raster showing channel numbers only

since you have sound and display it's not the hivoltage. You're electron guns are not being turned on. Most likely the IC which biases the guns or the IC which contains the biasing resistors.

Jan 28, 2009 | Sharp 25R-S100 25" TV

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No raster, with sound

check your brain go for electric shock to repair your mind as well as your television

Feb 12, 2008 | Standard (CRT) Televisions

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Sound problem


  1. no picture &no sound raster ok.


  1. your problem is in tuner to vif section.
  2. check supply to TUNER & VIF section .
  3. check loose contact in above section.
  4. check components in VIF section.
  5. for ckt open the web site & download it fron there as given here.
  6. hope this will help.
  7. good luck.

Oct 11, 2007 | Standard (CRT) Televisions

1 Answer


do you see anything on picture doesnt mean no raster ,raster mean anything that comes out in raster with sound only mean failure in either,connection in heater which means, loose connection or some new sets declare failure in vertical be more specific ok?

May 08, 2007 | Sony FD Trinitron WEGA XBRKV-40XBR800 40"...

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