Question about Sharp DVHR300U 109-Hours Video Recorder

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I got a big problem with my tv..

The technician declared that flyback transformer is defective because when the tv is turned on, the picture is not clear(it is something like the picture is distorted with a chirping sound). i can hear the voices of the characters in the tv but it's distorted.. as i opened the tv, i heared the flyback sounds(something like theres air coming out).. but wen i went to test it with a flyback tester,it's good.. what can you suggest? please help me.. thanks.. armel

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Did the technician said what was wrong with the transformer?(leaky)?,It might sound like air but is High voltage leaking from the top ,be very careful when proving around there and just get it change because is not repairable and dont use it or it will damage other components.

Posted on Sep 25, 2006

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I have a Panasonic CT-36hL43G TV that just turned offf while watching it and now the led by the power button blinks one time. Can anyone tell me what this code means or what the problem might be?


i hope your tv is more than 4years old ....... in all CRT TV's or CRT monitors after 4years a component called flyback transformer (see picture ) becomes weak - its work is to supply voltage to tube............. then following are the signs ...
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1 Answer

I have a 1993 36 inch RCA, model # P46151WK. TV was on and suddenly heard something pop and it started to smell like something burned inside. It wont turn on anymore.


You may have a fried horizontal output transistor and a defective flyback transformer. If indeed this set is 17 years old.......cheaper to replace him...sorry!

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A flyback transformer is one of the more expensive components in a projection TV. If there is no clear reason, such as a known power surge, you could well replace the flyback transformer again soon because the root problem was elsewhere.
An OEM transformer is not necessary but you might have trouble convincing an authorized factory service technician to use anything but the original manufacturer's parts.
As with many of today's electronic devices, if it is more than a year or two old, you will find the new products cheaper and with more features. The next generation of projection TVs will use lasers and scanning will be done with optically controlled micro-mirrors - no flyback transformer required.

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1 Answer

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it may need a Flyback Transformer or a burnt capasitor and resistors. there are many posts with this same problem. Some a little different. Check the fuse just inside where the power supply cord goes in . if the fuse is blown you will have to find the reason it burned . But maybe you will be lucky and replace the fuse. And it will turn on. but I think that only a TV technician can fix the problem.I have a background on TV repair and I think it's the Flyback transformer. sometimes you canresolder them and they stay.

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1 Answer

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Its not worth the repair if you still want to go ahead i need to know two things:
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If you are planning to fit it yourself are you a qualified electronics technician?
If you answered no to both of these questions i cannot tell you where to get one or how to fit it due to the massive amounts of danger involved.

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1 Answer

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leadfoot,
i believe the problem is the flyback transformer. try cleaning by using a small aerosal can. this will either correct the problem or you might have to replace it.

flyback transformer stores energy so i would suggest hiring a professional technician.

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