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I have a 32" lcd tv the power button comes on but only a black screen every once in a while it flickers like it wants to come on. Magnavox

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  • Ray Soto
    Ray Soto Oct 03, 2010

    The green power button comes on . on my 32 inch magnavox (32mf23id/37) the set seems like
    it wants to come on but do's not, I was told it might be the power source.

  • Ray Soto
    Ray Soto Oct 03, 2010

    I have a 32' lcd tv (32mf23id/37) the screen comes on and the piture looks good but it plays for a few seconds then it goes out . then it comes back on. does this continuaslly.
    It also keeps asking me for the pin to unlock

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  • Philips Master
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Look for Bad Capacitors on the power supply board ,They will be vented,swollen or puffed up on top 2200uf 10v, 3300uf10v

Posted on Oct 03, 2010

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  • Master
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This is very bad indeed. It is one of two things, either a failed / failing video board in the TV and/or a failing power supply. Either way it is major hardware failure in the TV. Unfortunately this is a very difficult repair, and unless you are an electrician I would not recommend attempting it. You will need to contact a local TV repair person in your area. If you think it may still be under warranty please contact the manufacturer to file an RMA. If you happened to purchase the TV with a major credit card (not a debit card) there is a good chance it may still be under the free extended warranty most credit cards place on electronics. Please contact your credit card company to inquire if they do this, and they will be able to file the claim and get you a refund for the TV.
Thanks, Tim

Posted on Oct 03, 2010

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  • Master
  • 10,515 Answers

Hi,

This is not a good news at all. Their are at least 3 things that can be causing this however I will give you the favorite first and it isn't very good news
The backlight, this illuminates the pixels and is basically a very thin set of neon type tubes that are controlled by a board called the inverter.

The backlight can itself go faulty on these sets (even the US equivalent)causing this flickering, this isn't good news as the backlight is inside the LCD panel and is considered to be part of it replacing it would equate to the cost of the set new.....not an option

The inverter itself or its grounding could be faulty

Lastly and probably not the power board feed to the inverter is bad

If under warranty, get this fixed without ant charge. Few companies also have an extended warranties for these issues such as Toshiba, so it is also worth to call in and check the same before pulling out money from your pocket.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Oct 03, 2010

  • taran_2005
    taran_2005 Oct 03, 2010

    Thanks for your response!!

    I did mention power supply -

    ' Lastly and probably not the power board feed to the inverter is bad '.

    Thanks!!

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