Question about Sony FD Trinitron WEGA KV-36HS420 36" TV

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SONY WEGA KV-36HS420 will not come on

With TV off, red light blinks 7 times / when TV is turned on, it blinks 6 times. TV is only 4 years old.

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  • Anonymous Dec 01, 2008

    I have the same problem with my sony KV-36HS420, the standby light blinks six times and the TV keeps shutting down before the picture comes on.

  • Anonymous Jan 02, 2009

    I have the same problem. I can fix it my self. I need to know which is the circuit that needs welding?

  • sergiocadena Jan 02, 2009

    I have the same problem. I need to know which is the circuit that needs to be welded, I can do it myself.

  • clauritsen Jan 19, 2009

    Standby light flashes six times with TV on

  • rojo31 Feb 15, 2009

    will not stay on light blinks seven times

  • karl_ynh Mar 11, 2009

    I'm getting a 6 blink diagnostic code when the unit is on and 7 blinks when the unit is off. You can hear the unit power up when turned on but then shuts off after a few seconds. If I unplug the television for about 6-8 hours without reattempting to plug it back in to test it, it will turn on and work normally when plugged in again.

  • Anonymous May 09, 2009

    Yep it blinks 7 times off and 6 times on. When it comes on then it is only sound for a few seconds then it shuts itself off and does the 6 blink thing. No picture at all.

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The blinking is an indication that the set detected a problem. The code usually indicates a bad regulator circuit. If yu can solder, you can probably fix this your self. Please let me know if you wish to attempt the repair. If not, expect a parts cost in the $25-$40 range plus the local labor rate for the repair.

Posted on Oct 01, 2008

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Can you tell me how to fix the problem listed below?


The blinking is an indication that the set detected a problem. The code usually indicates a bad regulator circuit. If yu can solder, you can probably fix this your self. Please let me know if you wish to attempt the repair. If not, expect a parts cost in the $25-$40 range plus the local labor rate for the repair.

Posted on Mar 24, 2009

  • steelplayer1
    steelplayer1 Feb 25, 2013

    I have this problem. Could you provide more info? I would like to try and repair it myself.

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Sony trinitron model kv 36hs420. t.v. will turn on for a few seconds, then turns off on it's own. (you can hear sound but turns off before picture comes up) Red light on front blinks. This happens if...


I have fixed this problem, on one of these.

It is a voltage regulator, and it probably died after a power outtage or surge,
am I right?

Get it to a fixer guy, Its a very affordable repair.


are you in VB? I'll do it!

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I have " Sony FD Trinitron WEGA KV-36HS420 36" TV


U have a soldering iron,desoldering pump or a roll of desoldering braids,a roll of solders?Can u do basic soldering and uderstand basic electronic?FBT- the flyback transformer,the big black block of a plastic with a red wire with a cap hook to a CRT-tv picture tube.Near the big block of a plastic with a red wire with a cap hook to a CRT picture tube.Inside to the right of the FBT,there are 2 power supply ICS,those 2 ICS are dead.Replaced these 2 power supply ICS near the FBT,will solved this tv LED power light indication blinking and will have stable tv power again,and tv will work.

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We have 7 blinks on my KV-36HS420 Sony Wega Triniton. It will come on with only 5 seconds of audio and then shuts itself off with 7 blinks. What part does it sound like needs to be replaces


The power supply in all likelihood. Not something you can do. Any tv repair can take care of it but will likely charge $25-30 for an estimate. They have to spend a bit of their time to check it out. The cost of the estimate will go towards any repairs.

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Ur high voltage is dead,FBT,flyback transformer is dead.The big block of plastic with a red wire with a cap hook to the CRT(tv tube).

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1 Answer

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Ur high voltage is dead,FBT,the flyback transformer is dead.The big block of plastic with a red wire with a cap to the CRT(tv tube).

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