Question about Sony FD Trinitron WEGA KV-27HS420 27" TV

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Trinitron kv-27hs420 standby light flaches 7 times and it wont come on

I have a sony trinitron kv-27hs420 and when i try to turn it on the standby light flashes 7 times tho sometimes it will come on but rarely, i have been told i can fix this this by replacing 2 chips on the board, however the tv is old and the entire board is cheaper and easier then buying/installing the chips, can i just replace whole board? and which board is it

Posted by thomas harris on

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1 Answer

The Knight

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  • Sony Master
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  1. Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

For more details, just type in the site name "Electro-help" to your search engines' search box [not in the address bar of your browser], and click search. It is an electronic equipments service help site. All details you want are there. Note the position of hyphen in between words in site name, when you type it in. The site will appear as it is in web; subtitled as Service help to electronic home entertainment equipments.

Pull up older posts. You can get all details.


You can locate it either at the bottom part of first search page, or at the top of second page. Detailed descriptions are there to help you.
Sometimes, clicking on advertisements by the side and bottom of each post might help you to get details about the availability of spare parts; price etc:-


Posted on Jun 04, 2012

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5 Related Answers

Paul Buscema

  • 116 Answers

SOURCE: Sony FD Trinitron Wega

The power supply board is failing. There are twi integrated circuits in the horizontal drive circuitry that have to be replaced. The original integrated circuits are the same type and you will see written on each..."MCZ3001D" and need to be replaced with Sony # 670581001 or the "D" board with those parts on it needs to be replaced. The cost of the entire board is high-about $375.

Posted on Mar 01, 2008

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Anonymous

  • 9 Answers

SOURCE: RE: Flashing "Standby" light

Go here http://www.avsforum.com/avs-vb/showthread.php?t=928945&page=4
for my post #108 for a step-by-step solution with pictures. $21.83 is all it cost me. I fixed my own TV as many others on that forum have. Feel free to contact me at [email protected] if you run into difficulties.
-Dave

Posted on May 12, 2008

Jaime Hernandez

  • 2337 Answers

SOURCE: Sony WEGA Fails to Turn On Stand-by Timer Flashes 7 Times

Follow the instructions from the image provide and see if that works, if it does not work; you have a hardware failure in your TV. The hardware failure could be the HOT or flyback transformer.
Let me know if you need further assistance.

Posted on Aug 23, 2008

welcomejee

Shahid Electronics

  • 10594 Answers

SOURCE: Sony Vega Service Codes

KV-32HS510 and KV-27HS420, seven times blink error code shows problem in Horizontal deflection circuit.

There are many possibilities like dry solder joints, weak capacitors, Horizontal transistor short or flyback transformer fried etc.

If you have little experience of TV repair and good solder skills and have necessary tools to test / check defective parts, then you can make it. you also need to have related service manual to see board location, schematics and part numbers.


Posted on Dec 12, 2008

Anonymous

  • 6 Answers

SOURCE: Sony TV Model KV-HS510

Hold setup button on remote while pushing the ON/OFF button on the TV at the same time. It worked for me. Here's the website I got this from: http://www.kb.sony.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=http--esupportsonycom-perl-tutorial-displaypltutid297templateid1regionid1KSMFlag7370&sliceId=&docTypeID=DT_TUTORIALS_1_1&dialogID=53101564&stateId=0%200%2053105132

Posted on Dec 31, 2008

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Mar 04, 2013 | Sony FD Trinitron WEGA KV-27HS420 27" TV

1 Answer

Problem with the Sony FD Trinitron WEGA KV-27HS420 27" TV WHEN TV IS TURNED ON IT SHUTS itself off in a second or two and a light on front blinks 6 times.


Most of the time this is caused by two ic chips on the circuit board, ic8001 and ic8002. These are components that can be replaced fairly reasonably. If you call a repairman it should cost 95-165 us dollars. However, this is just an educated guess. Good luck, Russmann.

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WHEN TV IS TURNED ON IT IMMEDIATELY SHUTS ITSELF OFF. THERE IS A RED LIGHT FLASHING IN THE FRONT RIGHT CORNER BOTTON


The light is hte standby light and it should be blinking a repeating count. That count will indicate the defective circuit. Please post the count and confirm your model to be KV-27HS420 and we can look up the code and provide the probable repair solution.

Thanks,
Dan

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1 Answer

Blinking Standby light and TV wont come on. Any ideas about how to get it to come on again?


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KV-32HS510 and KV-27HS420, seven times blink error code shows problem in Horizontal deflection circuit.

There are many possibilities like dry solder joints, weak capacitors, Horizontal transistor short or flyback transformer fried etc.

If you have little experience of TV repair and good solder skills and have necessary tools to test / check defective parts, then you can make it. you also need to have related service manual to see board location, schematics and part numbers.


Dec 12, 2008 | Sony FD Trinitron WEGA KV-27HS420 27" TV

1 Answer

Sony WEGA Fails to Turn On Stand-by Timer Flashes 7 Times


Follow the instructions from the image provide and see if that works, if it does not work; you have a hardware failure in your TV. The hardware failure could be the HOT or flyback transformer.
Let me know if you need further assistance.

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