Question about Sanyo DP42746 42 in. Plasma Television

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Sanyo DP42746 won't turn back on

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.....

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  • david_elena_ Jul 12, 2008

    my sanyo dp42746 is only about 2 yrs old and it turned off suddenly now it wont turn on at all.

  • lorelei1214 Jul 13, 2008

    oh my this is my problem barely a year old past the 1 year warranty and my 42 inch sanyo is dead reads d12v error code in the back, what do you do?

  • Anonymous Aug 15, 2008


  • jskapilot Sep 05, 2008

    18 month old POS Sanyo 42 inch Plasma. Was watching it. Turned it off for 1 hour and tried to turn it back on. Only sound, no video. I noticed almost a year ago the Video 2 input stopped working but was only using video 1 input anyway.

  • lostlady Sep 05, 2008

    Same problem. I am still searching for a solution. The sound would stay on but the picture would randomly go black. Then a few weeks picture. It really sucks!

  • D. Ellis Jan 12, 2009

    It was definitely the boards i ordered that fixed it up. I ordered the y-main board plus the upper and lower buffer boards which i replaced as a set to minimize more board failures. As a service manager for a major copier company, i know that one defective board can cause other boards to blow repeatedly when you really don't know which board is the culprit. ordered it from sanyo for approx. 300.00, installed myself, and wham, it worked. Its been 6 months since the repair and the t.v is still working, except now i'm getting a pink hue at the top of the screen when the screen is white. Really is a crappy t.v.

  • Anonymous Feb 22, 2009

    I was watching a basketball game and i mean a really good game between tennessee and kentucky and the the picture and sound just vanished. i've had the tv for a little over atwo years and i am pissed.

  • placervilleb Feb 25, 2009

    My Sanyo DP42746 has no pic or sound. The LED in the back says the D 12V is busted. What compont is the problem and where do i get it?

  • Anonymous Feb 26, 2009

    TV just went black pissed off how can i afford to fix a brand new tv that took me for ever to save for 18 months later it breaks??? What the hell I paid almost 2,000 dollars for this and no waranty figures thanks wallmart!!

  • suzannecrane Feb 27, 2009

    Sanyo DP42746 42 in. Plasma Television paid over 2000 dollars for it, 18 months ago it automatically broke sure its a manfacture defected model many complaints that it breaks with in 2 years of using. Lots of angry consumers everyone belives sanyo is selling a bad product. I counted over 3000 complaints! cutomer service refuses to help and waranty exspires after first year. everyone is having the same problem were watching tv and the picture goes black volume goes out but power button is still lit. Tv now is costing people after less than 2 yrs ownership over 800 dollars to repair this costly tv. everyone is posting law suit on this product..what do you think? Manufactors and retailers were product is bought are refusing to help anyone.

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  • Anonymous Mar 02, 2009

    TV quit working 3-1-09 no picture and no sound Sanyo is only 2 years old. Power lite on set indicates power is on.

  • mikeandlayra Mar 16, 2009

    My screen went black, but has sound, and it is also less than 2 years old. I left the room, came back and the picture was gone. Question for me is even if I pay 4-5 hundred dollars to fix it will it last only 2 more years? not even worth fixing, but to be sure my next TV won't be a Sanyo!

  • donpriceyach Mar 23, 2009

    I have the exact same problem. Bought it new at Walmart 18 mos ago for $1500.00. Walmart is no help whatsoever. What about a Class Action Lawsuit since there are 3000 complaints? I saw online Walmart was STILL selling this model, but now for $900!!!!!

  • Anonymous Mar 26, 2009


  • Anonymous Apr 03, 2009

    same thing kids watching tv the screen goes black . green light comes on only owned it for 18 months fu sanyo your products are ****

  • Anonymous Apr 04, 2009

    same thing here. tv is just over 2 years old. kids were watching it and all of a sudden no picture, no sound, just the little green light.

  • Anonymous Apr 06, 2009

    SAME Fu*** PROBLEM.. . tv is just over 2 years old. I was watching it and all of a sudden no picture, no sound, just the little green light. >=(

  • april rose Apr 20, 2009

    We have had the same problom with our Sanyo 42 in. TV. Looks like Sanyo is peddeling a bad product and we are the victims. Shame on them! They will never get my money or my friends and familys money again!

  • lucielu Apr 27, 2009

    Mine lasted about 3 started with half of the screen going black or completely black. I would switch the channel and I would have a full screen again.
    The other day, I turned it on and boom........Nothing but the little green light on. This really ****. Sanyo and walmart should be so proud of the rotten product they put out!!!!

  • Anonymous Apr 28, 2009

    Same problem here as well. I am game for some legal action...

  • Anonymous Apr 28, 2009

    We walked away from our Sanyo DP42746 TV and came back minutes later, now have a black screen yet great sound. We bought it back in August of 2007 = we will never buy a TV from Sanyo or WALMART again! We don't want to gamble with costly repairs and continue our disappointment. Just gonna take our losses.

  • freejam58 May 01, 2009

    I have the exact same problem. The bottom half of the screen started going off a week ago. last night it was the top half and now the whole tv is out.

    Did someone mention class action lawsuit?

  • Anonymous May 02, 2009

    Yep same problem here, green power LED on but no pic or sound...

  • Anonymous May 03, 2009

    Same problem, the screen has been going black on and of for about a year, thought it was just over heating, then May 1 it went black, no picture, no sound.......what to do???

  • ment4ll May 07, 2009

    our sanyo flat screen dp42746 about 2 years old (OUT OF WARRANTY OF COURSE) just died!!!! what the frig, we paid alot of money for this piece of ****.same problem as everyone else, screen just went black and no sound. sanyo and wally world suxxxxxxxxxxxxxxxxxxxxxxxxxxxx!!!!!!!!
    no more major purchases from them!

  • entwfixit May 19, 2009

    Can anybody help? I have a friend who is a single mom and she does not know about electronics . Her problem is that  the kids where watching TV a night before the following they it does not switch on anymore but it has sound ? 

  • D. Ellis Mar 06, 2011

    Well... here we go again. I have a useless black mirror on my wall again. 2 years after i repaired this tv, it's gone again. Bought new boards back in 2008 (Y-main sus. and upper and lower buffer boards) and installed them myself... the tv worked well for past 2 years but last week (Feb 24/11) the piece of junk died again. Obviously the replacement boards are just as bad as the original boards. No way i'm spending another 300.00 $$'s to fix this again. Anyone ever get the Class Action Law Suit going yet? Sanyo not only made a fortune selling this tv through Walmart but they also must be making a fortune selling replacement boards for a faulty product. I'd sure like to know what the failure rate on this product is...



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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

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Im working on same problem as many of you have mentioned.Seem 's that this is a steady problem for this model.There is a capacitor that normally goes out.Probably caused from a weak transistor or diode.This can be cheaply fixed,if you know someone, or have some experience in electronics.If you are willing,,you can remove all back screws,and examine the boards.Look for a capacitor with a dome shaped top or one that look major blown apart.probably will be a 50 volt 100 uF capacitor......Im doing research to find reasonabley priced parts.Ill share info when i find more out about this plasma problem.

Posted on Dec 27, 2009

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LJ92-01200A. Same issue here. Removed the Y Sus board and the tv worked. Sent the board for repair and they changed D5020 & it appears to have new solder on C5020. The solder on the heat sink over Q5006, Q5007, Q5008, Q5009, Q5010 appears new. Originally, I checked the two capitors capacitors on the power board (3000uf 10v) but they were ok. The buffer boards are new.

Posted on Mar 19, 2010

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I removed the 50v 100uF capacitor but still have no picture but i do have sound. I inspected the whole board for any cold solder but all is fine. Nothing left to do except just replace the Y-MAIN LJ92-01200A board and hope that's the culprit. :(

Posted on Jan 09, 2010

  • khamfongvora Jan 09, 2010

    I tried replacing the 50v 100uF capacitor but still no picture but I do have sound. I also inspected for cold solder on the top and bottom of the board. I don't know what else I can do except replace the Y-Y-MAIN LJ92-01200A board. Anyone with some other suggestion or ways to isolate the culprit part?

  • bobanneo1 Sep 09, 2010

    Did replacing the Y-Main work?


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Sanyo 1-800-877-5036

Used parts at

Posted on Aug 06, 2008

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Chances you blew the power board. Check that the caps are blown in the primary and secondary lines. Also the SMT fuses may be blown too. This is likely a heat related problem if the TV does the same thing over and over again. I had all those issues with a Scott TV and an LG. An older model LG had heat issues that would make it cut out because of a tuner over heat problem. Hard to know exactly what the fix should be.

Posted on Jan 02, 2015

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Posted on Aug 08, 2008

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Posted on Jan 02, 2017

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