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Noisy flyback transformer - Televison & Video

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It is damaged. no repair to it. Replace it with same number. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site

Posted on Jul 20, 2016

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SOURCE: noisy flyback transformer tcl CRT TV model 14F1

They often begin buzzing when the oil inside them gets old or evaporates from a cracked housing. It needs replacing however be very careful. Flyback have 50000 to 100000 volts in them even when the tv is off. There is a safety discharge procedure however if you are not familiar with replacing a flyback do not attempt it yourself. FLYBACK TRANSFORMERS CAN SEVERLY INJURE OR KILL YOU.

Posted on Jul 17, 2016

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Noisy fly back transformer


Needs replacement then. DO NOT try to replace unless you have experience with this repair. Flyback can generate from 30k to 150k volts even with the set turned off. You must know how to safely discharge it. THEY CAN KILL or SERIOUSLY INJURE YOU.

Jul 20, 2016 | Televison & Video

1 Answer

Noisy flyback transformer tcl CRT TV model 14F1


They often begin buzzing when the oil inside them gets old or evaporates from a cracked housing. It needs replacing however be very careful. Flyback have 50000 to 100000 volts in them even when the tv is off. There is a safety discharge procedure however if you are not familiar with replacing a flyback do not attempt it yourself. FLYBACK TRANSFORMERS CAN SEVERLY INJURE OR KILL YOU.

Jul 17, 2016 | Televison & Video

1 Answer

What is the flyback transformer number of sanyo tv ST-21SE1


If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Flyback transformer data is given. Search the site with the keyword "Flyback Transformer". Type in these words in the search box located at the top right of the display window.

Jun 20, 2015 | Sanyo Televison & Video

1 Answer

Picture on Samsung TXL2791F gets smaller after a few minuets


The horizontal output transistor that drives the flyback transformer overheats now. There might be other reasons too for this fault. If the flyback transformer has any internal winding short, this transistor will overheat.
Just replace the horizontal output transistor. Check its heat. If the newly replaced transistor too overheats, replace the flyback transformer.

May 24, 2012 | Samsung TXL2791F 27" TV

2 Answers

I am replacing the flyback transformer


You should post here pictures of old transformer and point out what wire you want to remove, then I can give you an idea what to do as flyback transformer is not in front of me.

Oct 27, 2008 | RCA HD52W59 HDTV Projection Television

1 Answer

Hyundai 14" colored tv no power


if the final flyback is ok ,then check the driver transistor and the voltage in his collector .Probably the flyback transformer is ok.please reply.

Oct 17, 2008 | Sharp 25R-S100 25" TV

1 Answer

36" RCA- loud whine/squeal when it is plugged in, otherwise no power.


The HOT Hortz output transistor has gone home, 99% of the time from a faulty IVHT (Flyback Transformer), very common on the ctc187cl* chassis. The factory Flyback is no longer available, I have had problems finding an aftermarket one to replace it with.

The HOT is a BUH517, but you can also use a 2SD5129. It is the transistor mounted on the siler heat sink with a metal clip rather than a screw, just in front of the flyback.....

If you replace just the HOT, most of the time you will get a rapid arc (27,000volts - BE CAREFUL!!!) from the lower (yoke) post on the flyback. If the flyback is shorted, It may also just burn out the HOT and go right back to "squealing"....

Good luck finding the flyback!!!

Oct 06, 2008 | RCA F32450 32" TV

1 Answer

Flyback transformer?


Its either the flyback or a regulator. But i would need the model number of your set in order to know for sure. Please reply to this same post with your model number.

Aug 02, 2008 | Televison & Video

1 Answer

Flyback


FLY BACK MEANS WHAT? is it flyback transformer or pulse fron eht to afc ckt. fly back transformer are available according to kit like toshiba sanyo philips

Sep 19, 2007 | Prima C2012 TV

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