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TV repair How do I know that flyback transformer is OK? I dismount it. How to check it by the help of a DVM?

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Flybacks cannot be checked with a dvm. your unit requires professional help

Posted on Jan 07, 2008

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Posted on Jan 02, 2017

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Tv repeatedly goes into standby mode


for crt television,1.you need to check if processor is ok because automatic blank limit from the flyback transformer is control by processor.2.the reference voltage from the smps transformer aprox 5vdc.3.flyback transformer need to be tested because it might breakdown during full compensation.4.check b+ if adequate.
or call me let me know your outcome.08082245266.

Oct 02, 2015 | Televison & Video

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Flyback transformer


Throw the set in recycling and buy a new set, its not worth repair, the part would be close to 100 bucks if it was available

Dec 18, 2017 | Zenith C36V23 36" TV

3 Answers

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 ...
(1) in some TV's only front LED's blinks - no picture no sound.... (2) in some TV's picture comes slowly after few seconds or after few mins or after few hours......... (3) in some TV's suddenly picture & sound goes temporarly & after some time again it appears ...... etc in case of (2) & (3) only flyback transformer needs to be replaced .....100% GUARANTEE again TV works normallyBUT in case of (1)... --------------- YOUR CASE (a) either only flyback transformer gets deffective or (b) flyback transformer & another component called transister ( will be near flyback transformer & its back portion is attached to aluminium metal ) gets defective or (c) along with flyback & transistor -- 3 or 4 more components (resistors, diodes, some times ICs ) gets deffective so replacing flyback transistor is a must .. & to find whether any other component is deffective or not completemainboard has to be checked ....... so if you are a technical person & having expierence in servicing line then you can do it yourself otherwise approach good tv service engineer ........... your TV is really very good one ... so don't think of buying new TV .... just goahead for repairing it it is worth & it works for atleast 2 more yrs....... try this & tell me what happened switch off your TV ... remove power cord from socket ,,,,.ware some mat or chapples to your feet ..... remove your TV's back side cover ......... observe carefully for any physically damaged components .... if you find then don't do anything ... close tv cover & approach tv service engineer ............. but if no physically damaged components are visible then take a suitable screew driver & rotate 2 (or 3) Knobs on flyback transformer in clockwise or anticlockwise direction - very little ( 4 or 5 degrees ) - you have to do this without touching any cable or any part of your tv .......... then fix..... back side TV cover ........connect power cord - stay at a distance & switch on your tv ......... if you get picture atleast for few seconds then in your case only flyback transformer needs to be replaced otherwise complete mainboard has to be checked. to find other deffective component ............. so your tv problem is a harware problem - it cannot be solved using remote control or any buttons on your tv ..... if you are finding difficult to get it repaired then you can remove your tv mainboard with the help of some technician & send to me ...... i will replace deffective components .... & send back to you ....you only have to bare the shipping charges .....it will take maximum 12days (5days - to recieve + 2 days servicing + 5 days to send back to you )....



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Aug 16, 2011 | Panasonic CT-36HL43 36" TV

1 Answer

We replaced the transformer for our RCA F27650. It was sparking and now it is not, but now the screen won't turn on. It is just black. We hookd all the wires up like they were. we can hear sound, but...


Hello
Along with the flyback transofrmer, its horizontal output transistor also must be replaced. I don't know whether you have replaced it or not. If not, replace it too. It can be located very near to the flyback transformer, a three terminal component, black in colour, usually screwed to a metal heatsink. Then switch on the TV and measure the video output voltage at the video output card pluged directly to the picture tube neck. The collector of the video aoutput transistors must come around 145VDC. If it also is there, advance the screen control on the flyback transformer to get a raster. If that voltage is not there, it means that the flyback transformer is not working, and horizontal oscillator stage should be checked for oscillation, check the lined drive transformer for its primary winding open, Check the entire horizontal oscillator section. The collector point of the line drive transistor, the transistor that drives the line drive transformer, a small transformer soldered diretly to the printed circuit board; should be checked with frequency meter. The frequency at that point should come around 15525HZ approx: OK.

Mar 19, 2011 | RCA F27650 27" TV

1 Answer

Cannot Find Flyback Transformer 60PP9202/17F


Contact Philips directly. They should be able to get you the part, even if they have to get it from another repair shops. Many repair shops purchase their parts from factory authorized distributors, not from the manufacturer. The flyback transformer powers the tube-it can be extremely dangerous to work on-EVEN with the tv off, they contain a lot of power somethjing like 50,000 to 150,00 volts. It is not fun getting shocked by one of these as many techs have been knocked unconcious by them. If you do not know the proper procedure to discharge a flyback then leave it alone!

Dec 22, 2009 | Philips 60PP9202 60" Rear Projection...

2 Answers

I intermittantly loos pickture never loose sound. Picture goues black for a split second and then comes back on.


I would check the flyback transformer on this unit something tells me that might be the issue your having. Warning tho if you do not know how to repair this TV check it into a shop as the flyback transformer has high voltage and could be fatel up including death if handle the wroung way.

I thank you very much for your free questions and do hope I was Very Helpful in your free answer today please do leave postive feedback and ratings for your free answer today.

Dec 07, 2009 | Mitsubishi WS-55809 55" Rear Projection...

2 Answers

Aconda 9383 cycling on and off.


Okay you replaced the flyback but did you check and see if that flyback has the same exact votage and polarity as the old one and they can range by version of TV see many models have diffrent version and yes it can get complicated since you have limited resources on the repair..

May 15, 2009 | Loewe Aconda ACO9303 30" TV

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

2 Answers

Toshiba flyback transformer


Check this site: //http://www.globalsemi.com/search.aspx

Jan 22, 2008 | Toshiba CN36G97 TV

1 Answer

Repair shop says Flyback Transformer needs replacement


If you know what you are doing, and you have a good (de)solderstation, you can repaire it yourself, but you don't know if it for sure the transformer. since you did not find the problem yourself, suppose you replace the transformer and your TV does not work !? Even when you repair it yourself, the repair guy shall charge you the cost for his time (I don't know the exact english word for his time checking the TV). And I suppose there is a warranty for his repair. So...

Sep 11, 2007 | Sony FD Trinitron WEGA KV-32FS120 32" TV

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