Question about Sanyo DP37647 37 in. LCD TV

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Black screen with sound

Power green light stays on but no picture with sound

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 135 Answers

SOURCE: screen went black on my 42" sanyo model dp42647 lcd

Hi there! The panel may be in protection mode. The Inverter board is the most logical area to start after checking power supply Voltages.(5,6,24 and 13Volts). There may be coils on the Inverter Board which have bad soldering or faulty. Other than this it may be main board which controls switch on or off. If all else fails, refer to a repairer. Beware of High Current!!! Best Wishes and Good Luck, Jus004

Posted on Aug 23, 2009

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SOURCE: My Sanyo DP32649 Will not turn on. The green light

Sounds like the power supply is bad.Do you know anything about working on circuit boards ? I bet some of the capacitors need replacing.This is a quick and very cheap fix if you know how to do it.

On the back of the tv is a panel held by two screws.Remove those and you have instant access to the power supply.Look and see if any of the capacitors are bulging or leaking.

Posted on May 07, 2010

  • 6 Answers

SOURCE: My picture stays black and and have no sound. The

This happens very often with these TVs. 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 the same issue with my TV last year. The solution is almost always to replace the Power Board (Y-Main) 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

jacksdadd230
  • 62 Answers

SOURCE: Grn Pwr Light, but no sound/picture.

I would shoot for the Power Supply,even though the caps arent bad dosent mean a regulator hasnt blown. check out http://www.shopjimmy.com/ and put in the model,they have the best prices

Posted on Sep 06, 2012

gopakumarg43
  • 74383 Answers

SOURCE: When turned on, screen goes black, but power light stays green

It sounds that the main digital board to this TV is faulty. Contact any service technician.

Posted on Jun 26, 2013

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