Question about Sanyo DP50747 50 in. Plasma TV

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Tv keeps turning on and off

Hey i have a 50 inch flat screen plasma tv that keeps turning on and off non stop everytime i try to turn it on and its not giving no sound or picture

Posted by mr_esneljean on

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Anonymous

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You probably have blown capacitors on the PSB-power supply board. Recaping with new UF caps works 90% of the time. The set turns itself of into a fault protection to keep from damaging more components internally. A few bucks a soldering iron some solder should do the trick.

Posted on Jun 30, 2010

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Our 50 inch Sanyo has been having trouble turning on. Can hear sound but no picture, then this morning would not turn on at all. Please help.

Posted on Aug 21, 2010

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Anonymous

SOURCE: sanyo dp50747 Plasma HD TV

sanyo recommends using the reset button with cable box on, vcr off and press the reset button 2x, then try pressing channel up button if no message appears on the screen. i have not trid it yet... but good luck

Posted on Oct 07, 2008

Anonymous

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SOURCE: 50 inch Sanyo Vizon Plasma TV. Has sound but no

This set has LG insides, it will have failed on either the Y-Sustain PCB or the Z-Sustain PCB.

Quite common.

Repair estimates should be $250 - £350 depending on which has failed.

Stick it on eBay, it will fetch good money faulty.

Posted on Sep 06, 2009

Testimonial: "Thank you for your response. We were driving ourselves nuts - fuzes checked out fine and not other guess where to turn. We appreciate your help!"

Anonymous

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SOURCE: my sanyo plasma flat screen tv will not come on....

For what it's worth, you can download the official Sanyo repair manual for this TV (DP42746) at http://www.eserviceinfo.com/downloadsm/43343/sanyo_dp42746.html. I uploaded it here when I had some issues with this TV last year. The solution almost always seems to be to replace the Power Board and the Upper and Lower Y Buffers. The parts and costs (from Sanyo in July 2009) are listed below (NOTE: Sanyo will not ship these parts to anyone but a repair shop):
1. V4 Y-Main (Y-Sustain) Circuit Board (Part # LJ92-01200A, Alt Part # LJ41-02759A) - USD $139.00
2. Upper Y-Buffer Circuit Board (Part # LJ92-01202A, Alt Part # LJ41-02760) - USD $64.00
3. Lower Y-Buffer Circuit Board (Part # LJ92-01203A, Alt Part # LJ41-02761A) - USD $64.00
Sanyo charges USD $10.50 for shipping, which brings the total cost for parts to USD $277.50. From my research, a shop would probably charge between USD $500 and $700 to do this repair. FYI - there is a class action lawsuit pending against Sanyo for this issue. The V4 Y-Main (Y-Sustain) Circuit Boards fail VERY frequently in this TV due to overheating. Hope this helps.

Posted on Aug 07, 2010

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