Question about Philips 32PF7321D 32 in. LCD Television

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Main Board for a 32" LCD

I am getting ready to open up the TV. A repair man charged me $60 to check it out. He said it needs a 'main board' he wanted $410 to fix it. I picked it up and am trying to fix myself. Other wise it's going in the trash.

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  • snelson_ga Dec 12, 2008

    Thanks, I will probably be hollering for help.....

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Its fairly easy, just be gentl, dont force anything, make sure its unplugged (duh right), try to keep the screws seperated so you know where they go, if you need help holler

Posted on Dec 12, 2008

  • Justin Washburn Dec 13, 2008

    Just let me know when you go to open it,

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There are two board which controls the picture. The TCON board and the main board.
If you wish to get some details about LCD TV repair then check the following link.
http://electro-medical.blogspot.com/

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Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
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It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

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I brought Sony Bravia KLV-32U300A 32 in. HD-Ready LCD TV 4 years ago now it's screen fill with lots of tiny lines difficult to see pictures. i submitted it to service man. he told me problem is on...


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Hello. My 32" Emerson TV has no power. Standby light doesn't come on when its plugged in.


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

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1 Answer

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Good day to you and welcome to fixya..

That problem is usually have 2 causes..Its either power supply board or main board..

Please take this steps on how to determine the problem:
1. Open the back cover.
2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..
3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..
4. If the power supply output is normal..The problem could be on the main board...
5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..
6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..

You have a better chances if you have failing capacitors on the power supply board..

Please watch this videos about capacitors..








Hope this solution will be helpful..

Thanks for using fixya...

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1 Answer

Red light blinks when tv is turned on., and tv flashes Sony and then nothing-blank screen. Red stilkl keeps flashing.


Good day!!!


That problem is usually have 2 causes..Its either power supply board or mainboard..

Please take this steps on how to determine the problem:
  1. Open the back cover.
  2. Check the power supply output...It should have 5vdc for the main board..12vdc or 16vdc for the audio and 24vdc for the back-light inverter..
  3. If those 3 voltage supplies have encountered voltage drop...The problem could be on power supply board..
  4. If the power supply output is normal..The problem could be on the main board...
  5. If the problem is power supply you should check if the capacitors are bulged on the top and try to replaced it..If you can't do that you can purchased new power supply board..
  6. If the problem is on main board there is no D.I.Y repair on that so you need to buy a new main board that fits to your TV..
Hope thissolution will be helpful..

Thanks for using fixya...

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1 Answer

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Send it to us and we will refurbish the board.....

e-mail me....circuitworld@comcast.net


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