Question about Sony KV-36XBR400 36" TV

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KV-34hs420 LED Blinks 4 times

Light Blinks 4 times, screen will not come on. Which part needs replacing to correct this error code?

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  • Sony Master
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Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505

Posted on Apr 29, 2012

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Anonymous

  • 129 Answers

SOURCE: Sony KV-32FS120 blinks 4 times

good day.
Have you tried first resoldering the terminals in the circuitry?
Also, try to check for the ABL supply near the flyback. Watch out for the small voltage zener diodes.


response is highly appreciated.


chris

Posted on Mar 28, 2008

localwonder

Michael Masters

  • 6784 Answers

SOURCE: Sony KV-34HS420 Random Shut downs

normally this is because of a failed capacitor or two that is located on the power supply board. replacing the power board in this unit will fix this issue.

Posted on Mar 16, 2009

Anonymous

  • 89 Answers

SOURCE: Sony KV-34HS420 Random Shut downs

i would say this is a internal problem how long have you had it?

Posted on May 28, 2009

snakehead

Henry Thomas

  • 1074 Answers

SOURCE: sony mod# KV-34HS420 - won't come on - red led blinks 7 times...

how many times does the light blink it is very important you mention it so that i can be able to help you.if it is blinking continously then that means your jungle ic301 the ik video path is defected have a tech look on your set for repairs,good luck

Posted on Jul 12, 2009

Brandon Heins

  • 252 Answers

SOURCE: Sony KV-34HS420 shuts of and stand-by light blinks

  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.

Source

Posted on Sep 01, 2009

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1 Answer

Why does tv shut off by its self when you turn it on and the standby and timer light blinks off and on


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/

Dec 30, 2014 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Sony kv-34hs420


How many times do this light flashes. Count it. These blinks are fault indications. From these number of blinks, you can get an idea about the faulty circuit section inside. It will make troubleshooting more narrower. If you wish to get more details about the blinking codes to Sony TVs, check this link. Pull up older posts there.

Mar 08, 2013 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Our tv turns off as soon as we turn it on. the red light blinks 7 times


Seven blinks = High voltage shutdown (overcurrent protection). The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits, otherwise send the TV to a workshop for a quote on likely parts and labour costs, then make a decision afterwards about whether it is economical to repair or not.

Usually it is either the flyback transformer, the tuning capacitors in the collector circuit of the horizontal output transistor(s) as well as the transistor(s) which could be faulty. These parts should be replaced at the same time.

Short-circuit horizontal output stage - hence the 7 blinks error code from the standby LED.

Mar 19, 2011 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Sony kv34hs420 shut off itself


Hi:
If you count the number of error blinks when it shuts this will let you know the error code you are having. If the red led blinks say 6 to 7 times after shutdown then pauses and does it all over again there is a problem with the deflection board or D Boardas sony calls it, It is usually related to the two Power supply regulators IC's on the D-board.

Nov 09, 2010 | Sony FD Trinitron WEGA KV-34HS420 34" TV

2 Answers

My KV-34HS420 won't come on and the Standby light


The system has found issues with your TV.. The only solution is to call in service. Tell them the 6 blinks.. it is a code for diagnostics. Sorry.. the logic portion of the TV is experiencing some kind of breakdown. The only suggestion that I can offer is to hard reset your TV to factory settings.. other than that you are in duck soup..

Sorry...
Stan Skaggs

Oct 19, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

2 Answers

Standby lighy blinks tv won't turn on


error code 4 is vertical deflecton failure . replace the vertical deflection ic. and the electrolytic capacitors in the vertical circuit. Or if you are lucky just resolder the vetical IC and resolder th horizontal section too.

Sep 28, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Sony mod# KV-34HS420 - won't come on - red led blinks 7 times...


how many times does the light blink it is very important you mention it so that i can be able to help you.if it is blinking continously then that means your jungle ic301 the ik video path is defected have a tech look on your set for repairs,good luck

Jul 12, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Sony KV-34HS420 Random Shut downs


i would say this is a internal problem how long have you had it?

May 28, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

1 Answer

Random Turn-Off on KV-34HS420


Hello there,
7 times blinks shows that Horizontal Deflection Circuit doesn't work properly.
I think, its not big fault and can be resolve in low cost at nearest Sony repair shop.

Feb 18, 2008 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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