Question about Sanyo DP37647 37 in. LCD TV
Power green light stays on but no picture with sound
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Posted on Jan 02, 2017
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
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
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
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
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