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

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Sony tv kv-29F1U

Flashing tv signal every five to ten seconds

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  • Anonymous Jun 14, 2008

    when the on button pushed it keeps flashing red, picture came on then went of after a few minutes could you pls tell me the problem do not have the remote.

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  • 173 Answers

Tuner needs replaced or taken apart and cross your fingers soldering joints, use silver solder look hard with magifiers for solder cracks or bad joints and grounds inside tuner.

Posted on Jan 18, 2008

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Red flashing light


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My sony trinitron kv 40xbr 700 flashes five times is this something that i can repair or do i need to seek a professional and how much (ball park figure) will it cost?


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My sony trinitro wont turn on, the stand by light flashes 4 times


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TV doesn't turn on, red light flashing


numder of flasing indicate error code . so i need how many flash you can see when power on the tv using front power butten then i will suggest the solution

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Sony wega trinitron won't turn on


  • Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505
  • Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.
  • and some times the eprom ic is fulty ...
  • try to unplug your tv from the main power for 5 hours then press the power button and keep pressing for 7 seconds then release ,if this do not work ,you should take your tv to a qualified person
  • i hope this helps ..
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    Sony Trinitron KV-32FS12


    i think your tv had a lose contact or crack on board

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    When a Sony TV flashes five times, that means that there is an AKB circuit fault.
    This means that there is something wrong with the video.
    Try first unplugging power for few hours, if that does not work, call a technician, as several IC and components must be tested and eventually replaced.

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    Flashing Screen


    ok, the problem you may be having is bad solder connections on the vertical deflection IC. resolder them or have a tech do it. also check for bad solder on the 9 volt regulater IC as well. these problems are common to older sony sets.

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