Question about Pioneer PRO-700HD 64" Rear Projection Television

3 Answers

Will not power up

  • My Pioneer Pro-700HD was purchased new about 9 years ago, never had a problem never been serviced. Last evening there was a “blue” flash on the screen and then the TV went completely dead (powered down). We tried the trouble shooting in the manual to no avail. It will not come back on the Red Power light stays on but will only stay green for less then a second; I hear a “click” inside the set when trying to turn on the power. I would guess it is a power supply board but since I have no expertise that would be presumtive.
  • I am checked the fuses on the board where the external power cord is attached, the 2 glass fuses look fine (wires in tack and no burns) but the third fuse is a solid color and I cannot see inside, I can take it to get tested or replace but decided I should get guidance from you on how to proceed from here. The inside requires cleaning, very dusty.
  • If it is the board at this juncture is it worth fixing or is it time to buy new (Plasma or LCD, not sure).

Posted by on

  • TEFidaleo Jul 26, 2008

    After working with Jamie867 yesterday I began to pull the power supply assembly. I then noticed another bank of fuses and found a 5A/125V (Pioneer part number FU206 per the circuit board) fast burning fuse was burned out. I went to Radio Shack and purchased a bag of the 5A fuses and had the fuse (FU101 10A/250V) tested that I could not see through yesterday and it checked out as good.



    I replaced the burned fused and reconnected the power cord but the fuse quickly turned red and burned out (I did this twice and then unplugged everything).



    Per the partial service manual I purchased yesterday (did not realize there were 2 parts to the manual) I noted this fuse is part of the Power Supply Assembly (Pioneer part number AWV1710).



    Per the pioneer site the power assembly is in stock. However, before I order a $352 part I want to make sure that is the appropriate course of action, i.e. I don't know if that fuse could blow from a problem in another area/board.



    Your recommendations are appreciated. I would be glad to email the Service Manual I have if that helps, it is in a PDF file.



    Thanks,

    Tony F.



  • TEFidaleo Jul 26, 2008

    I added updated information not available yesterday please revisit and respond.

    Thanks,
    Tony F.

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Hi,

This is not a solution but a suggestion. Perhaps it would be to your advantage to continue working with Jaime867 as he has started. You can always ask him directly through the "Ask Me" feature in his profile here.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 26, 2008

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There could be high current in board which is caused by the short in board you need carefully check each point for that you may need a service manual which will guide to trouble shoot the problem....

Posted on Jul 26, 2008

  • Anand Kumar
    Anand Kumar Jul 26, 2008

    If you would like to attempt a DIY, you will need a service manual to guide you. You can find one here:
    http://servicemanuals.vstore.ca/



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I would check the fuse that you couldn't see through. A set that is 9 years old might be difficult to get a new board for.

Posted on Jul 26, 2008

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