I was wathing tv and the tv shout donw for no reason, no more image but the green light stay on but no image. I unplug the tv for about 15 min. and i plug back and the tv got on for about 3 sec. and tourn off after with no more image.
Ok Fellas I found the Problem!
The Problem is the V4 Y-Main Board.
This board is located on the left side of the case looking upright from
the back. I spoke with may suppliers, and Sanyo all confirming this.
Apparently it has been an issue for some time. Sanyo has replaced the
V4 Y Main board with a W1 Y main board in newer models. The W1 Board is
NOT compatible for us tho. Just to be sure... If your T.V is taken
apart (like mine) Disconnect the peripheral cable from the V4 Y Main,
and turn on the set. I bet it will power up with audio and channel
function just NO picture. When you plug the board back in... POOF set
shuts down. Replacement boards are VERY hard to come by. So Happy
Hunting!
42' HD V4 Y-MAIN
PCB: LJ41-02760A LJ41-02761A LG92-01200A BN96-03352A
Oh yeah.. just FYI, Sanyo, Phillips, and Samsung all use the same parts. Hopefully that will help your searching.
Posted on Aug 04, 2008
After 1 year and 9 months, when we turn the TV on (with the power button or remote), the light comes on the bottom left corner, but no picture or sound. No lightning hit the TV or anything, my wife said the TV had some strange colors on it for a minute and then went black.
Sanyo won't do anything for me, I'd like to try to fix it myself, but need to learn where to start.
Most probable cause is a bad power supply, or at least that where to start. Lay unit flat on a blanket or carpet, being careful not to twist the display. Remove the back panel, probably 15-20 screws, and measure output voltages on the PSU. There should be silk screen ID's to help. - If any are missing or off, then replace the PSU.
Posted on Dec 14, 2007
MY TV JUST SHUT OFF. I CLICKED IT BACK ON, AND THE HDMI IN THE RIGHT HAND CORNER CAME ON, AND THEN THE PICTURE FOR ONE SECOND, AND THEN IT CLICKED OFF AGAIN.THEN IT WOULD'NT GO ON, AND A BLINKING LIGHT WAS IN THE RIGHT HAND CORNER UNTIL I PILLED THE PLUG, AND STARTED THE SAME ROUTINE AGAIN.
I am a military spouse and our same tv did the same thing on Super Bowl Sunday 2009! We did everything we know to do: call the company, called the repair man, etc. There apparently isn't a solution to this that wouldn't cost more than the tv is worth. So I got an attorney to start a class action:
If you would like to be compensated for your TV please contact me @
[email protected]
Posted on Jun 23, 2009
I have an 18 month old DP42746 and the other day, my kids were watching tv and all of a sudden, the screen went black and the sound died. Upon turning it back on, the relay on the back clicked on for a few seconds then turned off again. Now I've got a 1500.00 black mirror. From what I've read so far, the Y-main is probably gone (probably a diode or transistor) and possibly the lower buffer board. I've bypassed protect mode and now I only get sound out of the video out modes. LED is flashing 12 times indicating a D12V problem. Anyone know where I can purchase these circuit boards or even have them repaired?
Pissed off in Toronto.....
I basically paid $1,000 a year to have this piece of grud. I am having the same problem everyone else is. It shuts off by it's self, then when I try to turn it back on, it shuts it self back off or the picture looks like its having a hard time showing. Very frustrated and feel ripped off.
Posted on Feb 26, 2010
Can you explain in a little more detail, how to test the main y board. I am trying to check the power supply as you suggested but cannot find exactly where I am supposed to unplug. When you say just to the left of the power supply box, are you talking the box that the cord runs from to plug into the wall?? Thanks
The buffers are attached to the Y main, on the left side of the board. Samsung, sanyo, several others all have the same boards. As long as they are the right part # just go for the best price. Check www.shopjimmy.com for used boards.
Posted on Jan 08, 2009
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
My picture stays black and and have no sound. The green light comes on. i took the back off and there is a green light that is flashing when youn turn it on. Help. Warranty is out!
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
Sanyo Vizon 42" Plasma DP42746 Was using tv when I heard a click and I lost all audio and video, could not change the channel or adjust volume. Tried unplugging and sitting for 10 minutes. Plugged back in, I sometimes hear the click on hitting power, light comes on then it clicks again. Powerlight stays on, no audio or video. Sometimes I hear no click but power light stays on, no audio or video.
This is a common problem with these TVs. 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
picture went out when watching it black screen still has good voice
i would suspect the Y-SUSTAIN board as the problem they can fail and the tv will stay on with no video. they way to verify would be to check fuses on the board they are usually white and look like traditional GMA fuses usually located near connectors for power.
Posted on Jan 06, 2011
The other day my tv went all fuzzy and then just went black. This happened in under about 2 seconds tops. When the tv did this, the power light was still on indicating it was receiving power. I unplugged my tv and plugged it back in, to notice my tv power light was still on even though i didn't turn the tv back on after unplugging it. I opened the back the of the tv and looked at the "Error Position Light" and it flashed once as i plugged my tv back in, and that was it. If it flashes once, it means a "VA" problem. I've tried googling it but could not find out what it means. Any help is greatly appreciated.
here is how i fixed mine.......first you want to try to watch your fav show..next, stand up find your car or thuck keys..go to front door be sure to lock the door.....next crank car drive to local hardware store and buy 1 cinder block...pay, get your change return home. next open door place keys on table ....ok this is where it gets tricky.....you will need a clear path to the livingroom, den or media room....pick up cinder block straight over your head ...yell really loud peice of ****!!!!! throw cinder block with great force ,,be sure its released at a 10 degree angle...and ththats how i solved my problem....hope this helps
Posted on Aug 16, 2012
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