Question about Maxent MX-50HPT51 50 in. Plasma TV

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My Plasma maxent MX50HPT52 has power but no picture or sound? Repairman says Maxent he thinks it is a circuit board but Maxent has no website or directory to order parts or even a troubleshooting manual.

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He is right it is most likely to be the main audio video board that is faulty. That explains why you dont have picture or sound. It may be possible to perform a component level repair but I have found no repair manual in my collection too. However these exotic brands use components manufactured by the original brands. If you can get me the part number of the main audio/video board then I can help you find a repair manual that has schematics of that particular board.

Posted on May 15, 2010

  • Altafio Oct 01, 2010

    I have the same problem with my TV. The part number of the main audio/video board is B.ZRAT3C-2. I can't find that part # even I tried ebay, ShopJimmy, Discount Merchant etc. I also seeking help with that part. Thx

  • eagle338
    eagle338 Oct 01, 2010

    I will look for the part and let u know if I find one.

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Are you sure that its the main A/Vboard coz it sounds like the main power supply issue to me. Anyways the mainboard is the large board usually located at the center of the tv. If you can remove the back cover of the tv and get me a high res picture of the tv I can mark the board for you.

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When they say the board I would think the power supply board ( unless they meen the whole screen itself)is the problem, In my experience the problem may not be that costly, If it went pop I assume the fault caused the fuse to go ( the one inside the tv), if so it could be a small component . It may be repairable for less, at least get a second opinion.
Unless the power supply needs a total rebuild or the screen itself it shouldn't cost that.
pete

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1 Answer

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HI; MOST LIKELY CAUSE IS "Y SUSTAIN" BOARD. TRY TO FIND ONE ON EBAY. IF ATTEMPTING TO FIX THIS YOURSELF, BE VERY CAREFULL TO MAKE SURE THE POWER SUPPLY IS COMPLETELY DRAINED BEFORE REMOVING BOARD. ALSO, WHEN INSTALLING NEW BOARD, KEEP IN MIND THAT IT IS VERY SENSITIVE TO STATIC DISCHARGE, SECONDLY, CONNECT THE RIBBON CABLE ON BOTTOM RIGHT OF BOARD ONLY AFTER ALL SCREWS ARE TIGHT AND OTHER CONNECTORS ARE SEATED ( MAKE SURE THE RIBBONCABLE IS FIRMLY SEATED AND LOCKED DOWN). AFTER INSTALLATION,CONNECT SET TO A VERY GOOD SIGNAL SOURCE, AND ALLOW SET TO WARM UP FOR ABOUT 20 MINUTES, THEN (USING LARGE, CLEAN MIRROR) SLIGHTLY ADJUST "SETUP AND SETDOWN" MINIATURE POTENTIOMETERS UNTILL THERE ARE NO SPARKLES.
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Oct 13, 2010 | Maxent MX-50HPT51 50 in. Plasma TV

1 Answer

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Check and replace that board. Just visit the site linked here. Y Sustain board faults and symptoms of plasma display is given in details. http://electronicshelponline.blogspot.com/

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You need to have your main board replaced. It's unfortunate but even low voltage boards go bad. Try locating a Maxent website and email them to see where you can get parts from.

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1 Answer

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Ur Main Tuner Signal board is the cause.Replaced this Main Tuner Signal board will solved this problems.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish Main Tuner Signal board for replacement.

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Common problem on these sets are many many bad caps on the digital board. Repair kits are available for these containing the necessary parts if you're savvy with a soldering iron. Otherwise, replacement of the digital board is necessary and you'll have to contact either Maxent or a local repair shop. Tracking down which caps are bad can be difficult even with the right equipment as some tend to check good while in circuit when they are actually bad.

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If it flickers on start up it will only get worse. Mine got were it took over 3 hours to settle down, and never would stop flickering with DVD'S. Solution for mine: Replace bad capaciator on input circuit board, I found it by using a heat gun to speed up coming on process, Cost me 62 cents to replace the capaciator my self.

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open the back and reseat the LVDS cable(looks kinda like a computer data cable)...also check your other circuit board connectors..literally unplug the connectors..and reseat them...Question...is the set working now?...or is it not coming on?

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