Question about Philips Magnavox 51MP392H Rear Projection Television

1 Answer

Help. Please, TV won't come on.

When I push the power button the light flashes, the TV Chirps and goes off, It then repeats this over and over until the power cord is unplugged. I need to know what parts to buy to make this repair , where I can buy them and if they are plug in parts or if they will have to be soldered to one of the boards. Thanks Bassnut_22

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  • bassnut_22 Sep 14, 2008

    posted by Mendonca on Aug 12, 2008
    Report abuse

    The chirping is more like a cricket and is 17 chips at 10 seconds. There is no smoke or smell. Sounds like its coming from the bottom right side of the tv (looking from the back) and the only light that comes on is the light in the power switch.


    Comment by Mendonca, posted on Aug 19, 2008
    If I purchase the convergence amps (7044 and 7045) will I be able to tell where they go if I don't have a schematic for my 51PW9303?

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    Solution #1
    posted on Aug 19, 2008





    Lawrence1974

    Rank: Wiz
    Rating: 79%, 31 votes


    Replace the defective Convergence
    Amps (7044 and 7045) on Small Signal Module.
    932212344682


    Comment by Lawrence1974, posted on Aug 19, 2008
    When the Convergence Ampa go out the set willmake a chirping sound and the set will not come on.Also the HVG (5904) 312226832865 could be defective also that will be the only 2 reasons for the set not working.

    Comment by Lawrence1974, posted on Aug 19, 2008
    There are no instrutions on replacing the baord it is easy just make sure the set is unpluuged. Put it together the same way you will take it out.If you came do a computer this should be a piece of cake.
    Shuttle83
    This sounds like the same problem that I'm having, could it be the convergence Amps? Not doubting your solution just wondered if there was any chance that this could be it. Thanks Bassnut_22 Work Queue --> Have the same problem? --> I have the same problem -->I have the same problem.
    X This Problem has been added to the Share Your Expertise Page under "My Work Queue". OK Solution #1 posted on Aug 19, 2008
    Lawrence1974
    Rank: Wiz
    Rating: 79%, 31 votes
    Replace the defective Convergence
    Amps (7044 and 7045) on Small Signal Module.
    932212344682
    Comment by Lawrence1974, posted on Aug 19, 2008 When the Convergence Ampa go out the set willmake a chirping sound and the set will not come on.Also the HVG (5904) 312226832865 could be defective also that will be the only 2 reasons for the set not working. Comment by Lawrence1974, posted on Aug 19, 2008 There are no instrutions on replacing the baord it is easy just make sure the set is unpluuged. Put it together the same way you will take it out.If you came do a computer this should be a piece of cake. Shuttle83 This sounds like the same problem that I'm having, could it be the convergence Amps? Not doubting your solution just wondered if there was any chance that this could be it. Thanks Bassnut_22

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Hello bassnut_22,

This sounds like a power supply problem. 9 times out of 10 you are dealing with soldered components. Now for the bad news, you are not going to solve this problem by just getting the parts that you need as easy as you think, any number of things can be wrong with tis TV. First I would check the Horizontal Output Transistor to see if it is shorted to ground (check the collector in reference to ground), also I would advise checking the Integrated High Voltage Transformer (voltage output test, resistance test, capacitance test and ring test). The tests of the IHVT will tell you if the transformer is bad and in need of replacement. These are the first checks you will need to do.

Thank you,

I hope this Helps,

Shuttle83

Posted on Sep 14, 2008

  • Henry McKelvey
    Henry McKelvey Sep 18, 2008

    Hello bassnut_22,

    This could be a factor, in that the amps could be shorted out as opposed to open. However I would suspect that before your tv went out you would have experienced the typical rainbow wave problem that is associated with the convergence amps going bad. That is why I am hesitant about blanket statements without troubleshooting a problem. That's why I always say to check the circuits out first by using a schematic and a multimeter. Yes the amps could be the problem, if they are effecting the power supply's ability to start the TV due to activating the shutdown circuit. However I would also check the HV power supply for damage, since that is the more likely scenario.

    I hope this helps,

    Shuttle83


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