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

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Sony TV - No picture

Gradually the picture has been taking longer and longer to come on. Now it does not come on at all. But there is still sound.

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If the picture slowly fades on, the you may have a weak picture tube or a loose solder connection in the filiament circuit. If the picture flashes on then you may have a problem with the High Voltage/Horizontal circuit. This type of problem could be caused by a loose solder connection on the horizontal driver transformer. There are several other problems that could cause this type of problem. Stargazer

Posted on Jun 02, 2007

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Posted on Jan 02, 2017

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Hi,

I am sorry to hear regarding the trouble. A 5 blink error code indicates a white balance error. This can have many causes such as incorrectly adjusted screen voltages on the CRT's, a bad CRT drive IC, or a bad picture tube/CRT.More often, it is due to bad driver Ic's The Ic's are labeled MCZ3001D(B) and they should be found in the middle of the deflection board.If you call a technician, the estimate cost would be around $250 - $350.

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Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

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Yes.... u must adjust the screen voltage going to picture tube....located on the CRT module>>>little board connected directly to picture tube (take back off TV and you will see ) play around with screen control on the CRT module......can be adjusted at times to keep from losing picture!!! tube is bad...i know sure looks good when showing a picture....TRY adjusting screen voltage ( YES while TV is ON>>>CAREFULL ) gl

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1 Answer

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How old is the TV?
Sony Trinitron sounds like it may be from the 1980's?
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If the TV is over 15 years old, and has been used regularly, (like 4 hours every day or more) it seems likely that the tube has reached the end of life.
TV cathode ray tubes are like light bulbs...they do not last forever!

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1 Answer

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This can be a scan amplifier failure, failure in the high side of the main power supply, the picture tube may no longer be having emission, or the heater supply to the picture tube may not be working. There are many parts inside the set that can cause failures.

You will have to take the set in for proper shop service by an experienced TV tech.

Jerry G.

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