Question about Sony FD Trinitron WEGA KV-24FS120 24" TV

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Sony trinitron kvhs510

Didnt turn on. was fix once, problems in high voltage module.

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Re: sony trinitron kvhs510

Could be same problem or flyback, these set I have seen with bad tubes that cause a repeat.

Posted on Sep 09, 2007

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How to fix a Sony Trinitron?

the high voltage was shutdown the high voltage exceed to 33k volt which goes to safety will need to check the regulator in the power supply and the horizontal output transistor.

Sep 17, 2012 | Sony FD Trinitron WEGA KV-32HS500 32" TV

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Hi there, we have a sony KV-30HS420 30 inch fd Trinitron that is blinking 7 times and then shuts itself off. We can turn it on again but this problem is understandably quite anoying. What do you think...

There is a power supply fault causing the EHT to rise above 33KV.

High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
Hope that points the engineer in the right direction.

Mar 02, 2011 | Sony FD Trinitron WEGA KV-30HS420 30" TV

1 Answer

Timer button blinks but doesn't turn on

There are several faults that can cause this. Shorted diodes in the high voltage, a bad flyback transformer, a shorted CRT driver IC. None of them are very easy to fix.

Mar 29, 2009 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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Sony trinitron power will not come on sometimes


Can you give to me your diagnose test result..


Mar 06, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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My sony won't turn on (wega)

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).

Jan 10, 2009 | Sony FD Trinitron WEGA KV-36HS420 36" TV

1 Answer

KV-36XBR450, FD Trinitron WEGA

Hello maymet,

This sounds like the HV protection circuit is cutting off the TV due to a high current event in the set. This could be a problem in the High Voltage section of your TV (Horizontal output transistor, Integrated High Voltage Transformer, and y of the deflection components, and or the CRT in cases of shorts).

I would suggest that if you do not have a background in electronics, you should have an experienced TV technician troubleshoot and repair this problem.
This is due to the nature of the dangerous voltages that are present in the television.

I hope this helps,

Thank you,


Nov 02, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

2 Answers

TV Blinks 7 times

The 7 blinks indicate a safety shutdown due to over-voltage in the high voltage section. The high voltage has exceeded 33,000V. This is usually a problem with the power supply regulator. I need to look up the specific part for you. If you are comfortable working inside the set and can solder, you should be able to repair this yourself.


Jul 03, 2008 | Sony FD Trinitron WEGA KV-30XBR910 30" TV

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Sony Trinitron Vega KV-34HS420

it's better if you bring you're tv to sony service center and ask to an authorized repairman

May 07, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Sony KV Trinitron WEGA 36" TV won't turn on

My 36 wega did the same thing last week it must be contagious. Blinks 7 times mostly but sometimes 6 if hit power switch again. The problem is the D-boards shorted Flyback high voltage transformer but the ones Sony is selling $130 do not hold up and seem to burn out in a few days, yes twice bitten. Finally they send me new D-board can't wait to see if this fixes it once and for all. The board costs around $200 but is worth it to get it running again.

May 02, 2008 | Sony FD Trinitron WEGA KV-36HS500 36" TV

1 Answer

Sony 36' trinitron no picture but sound

I don't think it's your picture tube, but it may be a problem in your high voltage power supply. If there is no anode voltage then there is no raster (light from the screen) or picture. If it is your high voltage section the you may want to think about taking the set to a shop because of the danger of electrical shock.

Sep 21, 2007 | Sony KV-36XBR400 36" TV

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