Question about Standard (CRT) Televisions

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Tv goes pink....

I have a 3 year old sony trinitron kv-27hs420. when you turn it on it stays on for a couple seconds then the screen goes pink and it turns off. and the light blinks 7 times. i found out that the light blinking means...

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

i also got the diagnostics screen to come up for a few seconds and these are the three codes that came up.

akb

low-b

h-stop

my questions are
1:) can i make the repairs myself, i have done many repairs on alot of different electronics. but i am a little afraid to work on tv's because of the high voltage.

2:) where is a good repair shop in the dfw area that wont charge an arm and a leg to fix it?

Thanks,
John

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I cannot, in good faith, go about recommending shops, as I am not in the referral business. However, Ruckers TV in Arlington has done me right in the past....accordianman

Posted on Feb 09, 2008

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


  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:-


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I have the exact same problem. If you get anywhere (I can't) please contact me at tbiasi@hotmail.com. If I figure it out, I'll get back to you.

Good Luck.

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

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