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I need to know what the transformer looks like and where it can be found at on the board for my panasonic PT-47WX51E TV

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  • pbarnett2003 Apr 28, 2010

    ok i am not sure which one it is my tv will start to come on then cuts off when the lights for the pitcher starts to light up. then you have to un plug it to try it again but it will do the same when you plug it back up and turn it back on.

  • pbarnett2003 Apr 28, 2010

    thank you

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What transformer is it that you are looking for? Is it the flyback or the ordinary transformer?
The flyback looks like this
http://www.cinelabs.com/amp/amp-fb_v2_crop_sm.jpg
The regular transformer looks like this
http://www.electro-tech-online.com/attachments/general-electronics-chat/29570d1243209826-basic-transformer-use-power-supply-circuits-7-pin.jpg

Warning: Be advised that the flyback transformer holds 1000's of volts so does the anode cap where the transformer is plugged in. You should discharge the voltages before you attempt any repairs.

Sai.

Posted on Apr 28, 2010

  • eagle338
    eagle338 Apr 28, 2010

    It does not sound like a transformer issue but rather a power supply board issue. However I did not understand what you meant by "lights for the pitcher". Also do you hear a clicking noise from the set before it turns off?

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I would with back off have a look---look at high voltage transformer and that area of board and pay special attention to C509 (brown cap in front of high voltage transformer about 2 inches---it will be marked with that C509 on board.

If it is cracked or burnt it is bad---these fail a lot.

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1 Answer

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As you look from the back of the set (with the cover off) it is on the far right large board, C509 is the location number--it will be printed on top of the board under the cap.

It is about 2 o'clock near a large plug--on right side of right board--the one with the large gray transformer with a large red wire--part is forward of that transformer and red looking in color--two leads---it will have the C509 printed on top of the board under it.


This is a common failure part is this set--some will have a physical crack in the red part and others will look perfect-----value with a cap checker is .47 UF----200v is the working voltage --as long as you replace it with a cap of at least 200 volts of the same value--it will be fine--

There are two ways to get at it--pull the large board it is on OUT--I do not recommend this----or pull the whole light box out---very easy and safe---if you locate the cap and want to know how to pull the light box out let me know--

If this has helped you rate this solution as I do this here for free.

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If you can use the component inputs you will get a better picture.

I hope this information allows you to resolve this issue.
If you need further assistance please comment to this post and I will try to help you further.

Thanks for using FixYa
asnowman

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Hello twisttolife,

What you have lost is horizontal deflection, this is caused by loss of the horizontal drive signal to the yoke transformers on the CRTs, for all three of these to fail at the same time is not likely so what I think is that the drive amplifier may have malfunctioned. To check this you will need:

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With these three pieces of test equipment you should be able to troubleshoot this problem.

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I hope this helps,

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http://www.electron-age-technologies-llc.com

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