Question about Sony FD Trinitron WEGA KV-27FS100 27" TV

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Four flashing red lights then one green - no picture. This hapoens when I try to turn it on, The screen stays black and has white horizontal line.

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Hi,
Its problem when Vertical Deflection process is stop and TV goes to shutdown mode and shows error code of 4 blinks.
If your are familiar with tv repair and know about electronics, then check followings...

* +12 volt on pin 2 of IC561 on A board. (main board)
* -15 volt on pin 4 of IC561 on A board.
* If above voltages are ok then replace IC561 STV9379 its part number is 8-759-696-71

It is available in Parts Store.

Good Luck.

Posted on Oct 24, 2008

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Solution
Four flashing red lights then one green - no pictu - sp.gif The STANDBY light will flash if an issue is detected within the television. This can sometimes be resolved by simply following the steps below to reset the television.

  1. Turn off the television. IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.
  2. Unplug the television power cord from the electrical outlet.
  3. Let the television remain without power for 60 seconds.
  4. Plug the power cord back into the electrical outlet. NOTE: If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.
  5. Turn on the television.
If the issue is still unresolved after following all of the troubleshooting steps, service may be required. Please note the number of times the STANDBY light flashes and relay that information to the service center.

Posted on Oct 24, 2008

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  • 136 Answers

Its the problem in the IC on the main boaRD and needs repolacements.

Posted on Oct 24, 2008

  • 2 more comments 
  • ready2helpu Oct 24, 2008

    it also causes if broken surface mount resistor of main power supply.

    please check it out and make it proper if broken.

  • ready2helpu Oct 24, 2008

    first change the IC1751 on the main board and then check it will work but if still does not work then

    I would suggest to check IC601 on the power supply just to see if the voltage is getting to T603.
    Try to disconnect and isolate lead # 2 from the FBT to be able to measure the voltages in the power supply circuitry.
    Download the service manual if you do not have it yet.

    thanks.

  • ready2helpu Oct 24, 2008

    if there is sound but only no picture then

    Horizontal Out Transistor is shorted and have to replace it

  • ready2helpu Oct 24, 2008

    check out for this above link for further problems.





    http://www.agoraquest.com/searchbb.php?t...



    keep us updated to help you further.

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ikecur
  • 52 Answers

SOURCE: Four flashing red lights then one green - no picture. This hapoens when I try to turn it on, The screen stays black and has white horizontal line.

hi !
the picture tube of your tv have a problem on it. try to call for a technician to check for it.

Posted on Oct 30, 2008

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

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Did you see a solid horizontal line in the center of the screen prior to it going out? If so, that is a tell tale sign for vertical problems.

basic sony reset below

The STANDBY light will flash if the television detects an issue within the television. Some of these issues can be resolved simply by following the steps below to reset the television.

  1. Turn off the television. IMPORTANT: For a projection television that uses an internal lamp, wait 5 minutes after turning off the television to allow the lamp to cool before continuing with the following steps.
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